Edgar Filing: EATON VANCE SENIOR INCOME TRUST

Eaton Vance Senior Income Trust

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number: 811-09013

Eaton Vance Senior Income Trust

(Exact Name of Registrant as Specified in Charter)

Two International Place, Boston, Massachusetts 02110

(Address of Principal Executive Offices)

Maureen A. Gemma

Two International Place, Boston, Massachusetts 02110

(Name and Address of Agent for Services)

(617) 482-8260

(Registrant’s Telephone Number)

June 30

Date of Fiscal Year End

December 31, 2015

Date of Reporting Period

Item 1. Reports to Stockholders

LOGO

Eaton Vance

Senior Income Trust (EVF)

Semiannual Report

December 31, 2015

LOGO

Commodity Futures Trading Commission Registration. Effective December 31, 2012, the Commodity Futures Trading Commission (“CFTC”) adopted certain regulatory changes that subject registered investment companies and advisers to regulation by the CFTC if a fund invests more than a prescribed level of its assets in certain CFTC-regulated instruments (including futures, certain options and swap agreements) or markets itself as providing investment exposure to such instruments. The Fund has claimed an exclusion from the definition of the term “commodity pool operator” under the Commodity Exchange Act. Accordingly, neither the Fund nor the adviser with respect to the operation of the Fund is subject to CFTC regulation. Because of its management of other strategies, the Fund’s adviser is registered with the CFTC as a commodity pool operator and a commodity trading advisor.

Fund shares are not insured by the FDIC and are not deposits or other obligations of, or guaranteed by, any depository institution. Shares are subject to investment risks, including possible loss of principal invested.

Semiannual Report December 31, 2015

Eaton Vance

Senior Income Trust

Table of Contents


Performance			2

Fund Profile			3

Endnotes and Additional Disclosures			4

Financial Statements			5

Notice to Shareholders			43

Annual Meeting of Shareholders			44

Officers and Trustees			45

Important Notices			46

Eaton Vance

Senior Income Trust

December 31, 2015

Performance^1,2

Portfolio Managers Scott H. Page, CFA and John Redding


% Average Annual Total Returns	Inception Date		Six Months			One Year			Five Years			Ten Years
Fund at NAV		10/30/1998		–5.33	%		–2.48	%		4.29	%		4.03	%
Fund at Market Price		—		–3.21			–0.63			2.07			4.19
S&P/LSTA Leveraged Loan Index		—		–3.42	%		–0.69	%		3.41	%		4.31	%


% Premium/Discount to NAV³
													–9.56	%


Distributions⁴
Total Distributions per share for the period												$	0.244
Distribution Rate at NAV													6.58	%
Distribution Rate at Market Price													7.28	%


% Total Leverage⁵
Auction Preferred Shares (APS)													27.75	%
Borrowings													11.35

See Endnotes and Additional Disclosures in this report.

Past performance is no guarantee of future results. Returns are historical and are calculated by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested and includes management fees and other expenses. Fund performance at market price will differ from its results at NAV due to factors such as changing perceptions about the Fund, market conditions, fluctuations in supply and demand for Fund shares, or changes in Fund distributions. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance less than one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.


		2

Eaton Vance

Senior Income Trust

December 31, 2015

Fund Profile

Top 10 Issuers (% of total investments)⁶


Asurion, LLC	1.3	%
Community Health Systems, Inc.	1.2
Valeant Pharmaceuticals International, Inc.	1.2
First Data Corporation	1.1
NBTY, Inc.	1.0
Reynolds Group Holdings, Inc.	0.9
Calpine Corporation	0.9
Intelsat Jackson Holdings S.A.	0.9
Virgin Media Investment Holdings Limited	0.9
FMG Resources (August 2006) Pty. Ltd.	0.8
Total	10.2	%

Top 10 Sectors (% of total investments)⁶


Health Care	10.4	%
Electronics/Electrical	8.4
Business Equipment and Services	6.1
Retailers (Except Food and Drug)	5.8
Chemicals and Plastics	4.9
Lodging and Casinos	4.1
Food Products	3.9
Leisure Goods/Activities/Movies	3.5
Financial Intermediaries	3.3
Radio and Television	3.2
Total	53.6	%

Credit Quality (% of bonds, loans and asset-backed
securities)⁷

LOGO

See Endnotes and Additional Disclosures in this report.


		3

Eaton Vance

Senior Income Trust

December 31, 2015

Endnotes and Additional Disclosures

S&P/LSTA Leveraged Loan Index is an unmanaged index of the institutional leveraged loan market. Unless otherwise stated, index returns do not reflect the effect of any applicable sales charges, commissions, expenses, taxes or leverage, as applicable. It is not possible to invest directly in an index.

²	Performance results reflect the effects of leverage. Performance since inception for an index, if presented, is the performance since the Fund’s or oldest share class’ inception, as applicable.

³	The shares of the Fund often trade at a discount or premium from their net asset value. The discount or premium of the Fund may vary over time and may be higher or lower than what is quoted in this report. For up-to-date premium/discount information, please refer to http://eatonvance.com/closedend.

⁴

The Distribution Rate is based on the Fund’s last regular distribution per share in the period (annualized) divided by the Fund’s NAV or market price at the end of the period. The Fund’s distributions may be comprised of amounts characterized for federal income tax purposes as qualified and non-qualified ordinary dividends, capital gains and nondividend distributions, also known as return of capital. For additional information about nondividend distributions, please refer to Eaton Vance Closed-End Fund Distribution Notices (19a) posted on our website, eatonvance.com. The Fund will determine the federal income tax character of distributions paid to a shareholder after the end of the calendar year. This is reported on the IRS form 1099-DIV and provided to the shareholder shortly after each year-end. For information about the tax character of distributions made in prior calendar years, please refer to Performance-Tax Character of Distributions on the Fund’s webpage available at eatonvance.com. The Fund’s distributions are determined by the investment adviser based on its current assessment of the Fund’s long-term return potential. As portfolio and market conditions change, the rate of distributions paid by the Fund could change.

⁵

Leverage represents the liquidation value of the Fund’s APS and borrowings outstanding as a percentage of Fund net assets applicable to common shares plus APS and borrowings outstanding. Use of leverage creates an opportunity for income, but creates risks including greater price volatility. The cost of leverage rises and falls with changes in short-term interest rates. The Fund may be required to maintain prescribed asset coverage for its leverage and may be required to reduce its leverage at an inopportune time.

⁶	Excludes cash and cash equivalents.

⁷

Credit ratings are categorized using S&P. Ratings, which are subject to change, apply to the creditworthiness of the issuers of the underlying securities and not to the Fund or its shares. Credit ratings measure the quality of a bond based on the issuer’s creditworthiness, with ratings ranging from AAA, being the highest, to D, being the lowest based on S&P’s measures. Ratings of BBB or higher by S&P are considered to be investment-grade quality. Credit ratings are based largely on the ratings agency’s analysis at the time of rating. The rating assigned to any particular security is not necessarily a reflection of the issuer’s current financial condition and does not necessarily reflect its assessment of the volatility of a security’s market value or of the liquidity of an investment in the security. Holdings designated as “Not Rated” are not rated by S&P.

Fund profile subject to change due to active management.


		4

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited)


Senior Floating-Rate Loans — 142.6%⁽¹⁾


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Aerospace and Defense — 1.8%
BE Aerospace, Inc.
Term Loan, 4.00%, Maturing December 16, 2021			469	$	470,117
IAP Worldwide Services, Inc.
Revolving Loan, Maturing July 18, 2018⁽²⁾			161		144,543
Term Loan - Second Lien, 8.00%, Maturing July 18, 2019⁽³⁾			219		175,405
Silver II US Holdings, LLC
Term Loan, 4.00%, Maturing December 13, 2019			894		765,523
TransDigm, Inc.
Term Loan, 3.75%, Maturing February 28, 2020			1,992		1,950,099
Term Loan, 3.75%, Maturing June 4, 2021			887		865,630

				$	4,371,317


Air Transport — 0.4%
Virgin America, Inc.
Term Loan, 4.50%, Maturing April 4, 2019			1,150	$	943,690

				$	943,690


Automotive — 4.0%
Affinia Group Intermediate Holdings, Inc.
Term Loan, 4.75%, Maturing April 27, 2020			632	$	632,595
Allison Transmission, Inc.
Term Loan, 3.50%, Maturing August 23, 2019			1,666		1,659,921
Chrysler Group, LLC
Term Loan, 3.50%, Maturing May 24, 2017			911		909,571
Term Loan, 3.25%, Maturing December 31, 2018			1,032		1,024,017
CS Intermediate Holdco 2, LLC
Term Loan, 4.00%, Maturing April 4, 2021			320		315,990
Dayco Products, LLC
Term Loan, 5.25%, Maturing December 12, 2019			467		462,896
Federal-Mogul Holdings Corporation
Term Loan, 4.75%, Maturing April 15, 2021			1,926		1,703,215
Horizon Global Corporation
Term Loan, 7.00%, Maturing June 30, 2021			244		235,219
MPG Holdco I, Inc.
Term Loan, 3.75%, Maturing October 20, 2021			1,022		1,000,180
Schaeffler AG
Term Loan, 4.25%, Maturing May 15, 2020			169		169,738
TI Group Automotive Systems, LLC
Term Loan, 4.50%, Maturing June 30, 2022	EUR		374		401,431
Term Loan, 4.50%, Maturing June 30, 2022			574		562,091


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Automotive (continued)
Tower Automotive Holdings USA, LLC
Term Loan, 4.00%, Maturing April 23, 2020		368	$	353,282
Visteon Corporation
Term Loan, 3.50%, Maturing April 9, 2021		306		304,192

			$	9,734,338


Beverage and Tobacco — 0.3%
Flavors Holdings, Inc.
Term Loan, 6.75%, Maturing April 3, 2020		352	$	314,648
Term Loan - Second Lien, 11.00%, Maturing October 3, 2021		500		472,500

			$	787,148


Brokerage / Securities Dealers / Investment Houses — 0.3%
Astro AB Borrower, Inc.
Term Loan, 5.50%, Maturing April 30, 2022		149	$	147,851
Term Loan - Second Lien, 9.75%, Maturing March 3, 2023		125		123,125
Salient Partners L.P.
Term Loan, 7.50%, Maturing May 19, 2021		394		382,180

			$	653,156


Building and Development — 3.0%
ABC Supply Co., Inc.
Term Loan, 3.50%, Maturing April 16, 2020		486	$	482,050
Auction.com, LLC
Term Loan, 6.00%, Maturing May 8, 2022		496		491,908
CPG International, Inc.
Term Loan, 4.75%, Maturing September 30, 2020		293		277,121
DTZ U.S. Borrower, LLC
Term Loan, 4.25%, Maturing November 4, 2021		1,269		1,240,081
Gates Global, Inc.
Term Loan, 4.25%, Maturing July 5, 2021		2,233		2,100,945
Headwaters Incorporated
Term Loan, 4.50%, Maturing March 24, 2022		100		99,707
Quikrete Holdings, Inc.
Term Loan, 4.00%, Maturing September 28, 2020		449		445,251
Term Loan - Second Lien, 7.00%, Maturing March 26, 2021		720		721,263
RE/MAX International, Inc.
Term Loan, 4.25%, Maturing July 31, 2020		749		736,700
Summit Materials Companies I, LLC
Term Loan, 4.25%, Maturing July 17, 2022		299		295,795


		5		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Building and Development (continued)
WireCo WorldGroup, Inc.
Term Loan, 6.00%, Maturing February 15, 2017			297	$	286,157

				$	7,176,978


Business Equipment and Services — 10.0%
Acosta Holdco, Inc.
Term Loan, 4.25%, Maturing September 26, 2021			1,634	$	1,561,665
AlixPartners, LLP
Term Loan, 4.50%, Maturing July 28, 2022			299		297,380
Altisource Solutions S.a.r.l.
Term Loan, 4.50%, Maturing December 9, 2020			1,050		918,994
BakerCorp International, Inc.
Term Loan, 4.25%, Maturing February 14, 2020			413		359,637
Brickman Group Ltd., LLC
Term Loan, 4.00%, Maturing December 18, 2020			392		380,959
Brock Holdings III, Inc.
Term Loan, 6.00%, Maturing March 16, 2017			539		503,766
CCC Information Services, Inc.
Term Loan, 4.00%, Maturing December 20, 2019			218		215,065
Ceridian, LLC
Term Loan, 4.50%, Maturing September 15, 2020			306		262,773
Corporate Capital Trust, Inc.
Term Loan, 4.00%, Maturing May 15, 2019			467		461,134
CPM Holdings, Inc.
Term Loan, 6.00%, Maturing April 11, 2022			124		123,675
Crossmark Holdings, Inc.
Term Loan, 4.50%, Maturing December 20, 2019			714		535,684
Education Management, LLC
Term Loan, 5.50%, Maturing July 2, 2020⁽³⁾			135		61,862
Term Loan, 8.50%, (2.00% Cash, 6.50% PIK), Maturing July 2, 2020⁽³⁾			236		58,181
EIG Investors Corp.
Term Loan, 5.00%, Maturing November 9, 2019			2,331		2,277,259
Emdeon Business Services, LLC
Term Loan, 3.75%, Maturing November 2, 2018			700		688,933
Extreme Reach, Inc.
Term Loan, 6.75%, Maturing February 7, 2020			767		756,472
Garda World Security Corporation
Term Loan, 4.00%, Maturing November 6, 2020			55		52,616
Term Loan, 4.00%, Maturing November 6, 2020			488		467,915
Term Loan, 4.75%, Maturing November 6, 2020	CAD		294		205,037
IG Investment Holdings, LLC
Term Loan, 6.00%, Maturing October 29, 2021			223		221,591


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Business Equipment and Services (continued)
IMS Health Incorporated
Term Loan, 3.50%, Maturing March 17, 2021			1,193	$	1,161,567
Information Resources, Inc.
Term Loan, 4.75%, Maturing September 30, 2020			587		585,509
ION Trading Finance Limited
Term Loan, 4.25%, Maturing June 10, 2021			224		217,704
Term Loan, 4.50%, Maturing June 10, 2021	EUR		517		561,989
KAR Auction Services, Inc.
Term Loan, 3.50%, Maturing March 11, 2021			1,360		1,358,915
Kronos Incorporated
Term Loan, 4.50%, Maturing October 30, 2019			1,192		1,175,199
Term Loan - Second Lien, 9.75%, Maturing April 30, 2020			549		547,551
Match Group, Inc.
Term Loan, 5.50%, Maturing November 16, 2022			550		545,875
MCS AMS Sub-Holdings, LLC
Term Loan, 7.50%, Maturing October 15, 2019			478		391,806
Monitronics International, Inc.
Term Loan, 4.25%, Maturing March 23, 2018			263		256,045
Term Loan, 4.50%, Maturing April 2, 2022			323		308,854
PGX Holdings, Inc.
Term Loan, 5.75%, Maturing September 29, 2020			261		260,188
RCS Capital Corporation
Term Loan, 7.50%, Maturing April 29, 2019⁽³⁾			1,059		741,617
Term Loan - Second Lien, 11.50%, Maturing April 29, 2021⁽³⁾			500		86,300
Sensus USA, Inc.
Term Loan, 4.50%, Maturing May 9, 2017			333		325,895
Term Loan - Second Lien, 8.50%, Maturing May 9, 2018			500		491,250
ServiceMaster Company
Term Loan, 4.25%, Maturing July 1, 2021			1,929		1,916,742
TNS, Inc.
Term Loan, 5.00%, Maturing February 14, 2020			307		303,130
Travelport Finance (Luxembourg) S.a.r.l.
Term Loan, 5.75%, Maturing September 2, 2021			569		558,458
WASH Multifamily Laundry Systems, LLC
Term Loan, 4.25%, Maturing May 14, 2022			22		21,728
Term Loan, 4.25%, Maturing May 14, 2022			127		124,070
West Corporation
Term Loan, 3.25%, Maturing June 30, 2018			1,689		1,663,959

				$	24,014,949


		6		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Cable and Satellite Television — 3.4%
Altice US Finance I Corporation
Term Loan, 4.25%, Maturing December 22, 2022			798	$	781,182
MCC Iowa, LLC
Term Loan, 3.75%, Maturing June 30, 2021			419		415,660
Neptune Finco Corp.
Term Loan, 5.00%, Maturing October 9, 2022			1,900		1,899,831
Numericable Group SA
Term Loan, 4.56%, Maturing July 29, 2022	EUR		350		375,073
Term Loan, 4.56%, Maturing July 31, 2022			175		168,000
Numericable U.S., LLC
Term Loan, 4.50%, Maturing May 21, 2020			505		488,238
Term Loan, 4.50%, Maturing May 21, 2020			584		564,349
Virgin Media Investment Holdings Limited
Term Loan, 3.50%, Maturing June 30, 2023			1,323		1,297,216
Term Loan, 4.25%, Maturing June 30, 2023	GBP		750		1,093,820
Ziggo B.V.
Term Loan, 3.75%, Maturing January 15, 2022	EUR		191		203,721
Term Loan, 3.75%, Maturing January 15, 2022	EUR		297		316,231
Term Loan, 3.75%, Maturing January 15, 2022	EUR		537		572,384

				$	8,175,705


Chemicals and Plastics — 7.3%
Allnex (Luxembourg) & Cy S.C.A.
Term Loan, 4.50%, Maturing October 3, 2019			144	$	144,194
Allnex USA, Inc.
Term Loan, 4.50%, Maturing October 3, 2019			75		74,815
Aruba Investments, Inc.
Term Loan, 4.50%, Maturing February 2, 2022			150		147,836
Axalta Coating Systems US Holdings, Inc.
Term Loan, 3.75%, Maturing February 1, 2020			1,709		1,698,189
AZ Chem US, Inc.
Term Loan, 4.50%, Maturing June 12, 2021			1,198		1,196,364
Chemours Company (The)
Term Loan, 3.75%, Maturing May 12, 2022			498		457,700
ECO Services Operations, LLC
Term Loan, 4.75%, Maturing December 4, 2021			595		588,857
Emerald Performance Materials, LLC
Term Loan, 4.50%, Maturing August 1, 2021			242		238,543
Term Loan - Second Lien, 7.75%, Maturing August 1, 2022			275		260,906
Flint Group GmbH
Term Loan, 4.50%, Maturing September 7, 2021			74		71,845
Flint Group US, LLC
Term Loan, 4.50%, Maturing September 7, 2021			445		430,803


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Chemicals and Plastics (continued)
Gemini HDPE, LLC
Term Loan, 4.75%, Maturing August 7, 2021			815	$	809,606
Huntsman International, LLC
Term Loan, 3.75%, Maturing October 1, 2021			469		466,078
Ineos Finance PLC
Term Loan, 4.25%, Maturing March 31, 2022	EUR		223		236,655
Ineos US Finance, LLC
Term Loan, 3.75%, Maturing May 4, 2018			2,072		2,022,536
Term Loan, 4.25%, Maturing March 31, 2022			347		336,208
Kronos Worldwide, Inc.
Term Loan, 4.00%, Maturing February 18, 2020			147		133,989
MacDermid, Inc.
Term Loan, 5.50%, Maturing June 7, 2020			274		266,289
Term Loan, 5.50%, Maturing June 7, 2020			297		287,719
Term Loan, 5.50%, Maturing June 7, 2020			637		618,162
Minerals Technologies, Inc.
Term Loan, 3.77%, Maturing May 9, 2021			611		612,778
Orion Engineered Carbons GmbH
Term Loan, 5.00%, Maturing July 25, 2021			251		252,080
Term Loan, 5.00%, Maturing July 25, 2021	EUR		439		479,299
OXEA Finance, LLC
Term Loan, 4.25%, Maturing January 15, 2020			343		331,424
PolyOne Corporation
Term Loan, 3.75%, Maturing November 11, 2022			250		249,688
PQ Corporation
Term Loan, 4.00%, Maturing August 7, 2017			582		578,363
Solenis International L.P.
Term Loan, 4.25%, Maturing July 31, 2021			148		142,447
Term Loan, 4.50%, Maturing July 31, 2021	EUR		469		507,205
Sonneborn Refined Products B.V.
Term Loan, 4.75%, Maturing December 10, 2020			33		33,266
Sonneborn, LLC
Term Loan, 4.75%, Maturing December 10, 2020			189		188,509
Trinseo Materials Operating S.C.A.
Term Loan, 4.25%, Maturing November 5, 2021			149		147,384
Tronox Pigments (Netherlands) B.V.
Term Loan, 4.50%, Maturing March 19, 2020			1,484		1,323,881
Univar, Inc.
Term Loan, 4.25%, Maturing July 1, 2022			1,596		1,550,257
Zep, Inc.
Term Loan, 5.75%, Maturing June 27, 2022			672		665,748

				$	17,549,623


		7		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Clothing / Textiles — 0.3%
Ascena Retail Group, Inc.
Term Loan, 5.25%, Maturing August 21, 2022			800	$	752,000

				$	752,000


Conglomerates — 0.8%
Bestway UK Holdco Limited
Term Loan, 5.25%, Maturing October 6, 2021	GBP		551	$	812,021
RGIS Services, LLC
Term Loan, 5.50%, Maturing October 18, 2017			1,375		1,014,075

				$	1,826,096


Containers and Glass Products — 3.2%
Berry Plastics Holding Corporation
Term Loan, 3.50%, Maturing February 8, 2020			1,045	$	1,028,594
Term Loan, 3.75%, Maturing January 6, 2021			294		290,866
Term Loan, 4.00%, Maturing October 1, 2022			536		531,949
Hilex Poly Co., LLC
Term Loan, 6.00%, Maturing December 5, 2021			744		744,685
Libbey Glass, Inc.
Term Loan, 3.75%, Maturing April 9, 2021			197		194,538
Onex Wizard Acquisition Company I S.a.r.l.
Term Loan, 4.25%, Maturing March 13, 2022	EUR		968		1,052,291
Onex Wizard US Acquisition, Inc.
Term Loan, 4.25%, Maturing March 13, 2022			596		587,791
Pelican Products, Inc.
Term Loan, 5.25%, Maturing April 10, 2020			431		423,573
Reynolds Group Holdings, Inc.
Term Loan, 4.50%, Maturing December 1, 2018			1,648		1,633,817
TricorBraun, Inc.
Term Loan, 4.00%, Maturing May 3, 2018			298		295,965
Verallia
Term Loan, 5.00%, Maturing October 29, 2022	EUR		800		870,607

				$	7,654,676


Cosmetics / Toiletries — 1.8%
Coty, Inc.
Term Loan, 3.75%, Maturing October 27, 2022			425	$	425,266
Galleria Co.
Term Loan, Maturing October 22, 2022⁽²⁾			825		819,328
KIK Custom Products, Inc.
Term Loan, 6.00%, Maturing August 26, 2022			773		744,073
Prestige Brands, Inc.
Term Loan, 3.50%, Maturing September 3, 2021			285		283,612


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Cosmetics / Toiletries (continued)
Revlon Consumer Products Corporation
Term Loan, 4.00%, Maturing October 8, 2019			577	$	575,802
Sun Products Corporation (The)
Term Loan, 5.50%, Maturing March 23, 2020			1,543		1,450,855

				$	4,298,936


Drugs — 3.6%
Alkermes, Inc.
Term Loan, 3.50%, Maturing September 18, 2019			194	$	193,379
AMAG Pharmaceuticals, Inc.
Term Loan, 4.75%, Maturing August 13, 2021			518		500,616
DPx Holdings B.V.
Term Loan, 4.25%, Maturing March 11, 2021			669		646,059
Term Loan, 4.50%, Maturing March 11, 2021	EUR		223		242,732
Endo Luxembourg Finance Company I S.a.r.l.
Term Loan, 3.75%, Maturing September 26, 2022			1,300		1,285,105
Horizon Pharma, Inc.
Term Loan, 4.50%, Maturing May 7, 2021			597		559,687
Mallinckrodt International Finance S.A.
Term Loan, 3.25%, Maturing March 19, 2021			737		716,611
Valeant Pharmaceuticals International, Inc.
Term Loan, 3.75%, Maturing December 11, 2019			1,302		1,256,431
Term Loan, 3.75%, Maturing August 5, 2020			1,553		1,493,391
Term Loan, 4.00%, Maturing April 1, 2022			1,787		1,725,834

				$	8,619,845


Ecological Services and Equipment — 0.7%
ADS Waste Holdings, Inc.
Term Loan, 3.75%, Maturing October 9, 2019			936	$	914,384
EnergySolutions, LLC
Term Loan, 6.75%, Maturing May 29, 2020			1,099		851,406

				$	1,765,790


Electronics / Electrical — 13.6%
Answers Corporation
Term Loan, 6.25%, Maturing October 3, 2021			1,041	$	712,907
Avago Technologies Cayman Ltd.
Term Loan, 3.75%, Maturing May 6, 2021			2,632		2,630,607
Campaign Monitor Finance Pty. Limited
Term Loan, 6.25%, Maturing March 18, 2021			342		336,379
CommScope, Inc.
Term Loan, 3.83%, Maturing December 29, 2022			449		446,701


		8		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Electronics / Electrical (continued)
CompuCom Systems, Inc.
Term Loan, 4.25%, Maturing May 11, 2020		351	$	224,892
Dell International, LLC
Term Loan, 4.00%, Maturing April 29, 2020		2,910		2,896,429
Deltek, Inc.
Term Loan, 5.00%, Maturing June 25, 2022		147		145,594
Term Loan - Second Lien, 9.50%, Maturing June 25, 2023		200		199,500
Entegris, Inc.
Term Loan, 3.50%, Maturing April 30, 2021		168		166,664
Excelitas Technologies Corp.
Term Loan, 6.00%, Maturing October 31, 2020		411		367,359
Eze Castle Software, Inc.
Term Loan, 4.00%, Maturing April 6, 2020		850		835,038
FIDJI Luxembourg (BC4) S.a.r.l.
Term Loan, 6.25%, Maturing December 24, 2020		279		279,000
Go Daddy Operating Company, LLC
Term Loan, 4.25%, Maturing May 13, 2021		2,362		2,350,780
Hyland Software, Inc.
Term Loan, 4.75%, Maturing July 1, 2022		269		264,749
Term Loan - Second Lien, 8.25%, Maturing July 1, 2023		275		258,844
Infor (US), Inc.
Term Loan, 3.75%, Maturing June 3, 2020		2,606		2,458,581
Informatica Corporation
Term Loan, 4.50%, Maturing August 5, 2022		1,097		1,058,618
Lattice Semiconductor Corporation
Term Loan, 5.25%, Maturing March 10, 2021		274		259,944
M/A-COM Technology Solutions Holdings, Inc.
Term Loan, 4.50%, Maturing May 7, 2021		246		245,634
MA FinanceCo., LLC
Term Loan, 4.50%, Maturing November 20, 2019		523		517,820
Term Loan, 5.25%, Maturing November 19, 2021		980		970,893
Magic Newco, LLC
Term Loan, 5.00%, Maturing December 12, 2018		677		676,930
MH Sub I, LLC
Term Loan, 4.75%, Maturing July 8, 2021		617		599,547
Microsemi Corporation
Term Loan, 3.25%, Maturing February 19, 2020		299		298,207
NXP B.V.
Term Loan, 3.75%, Maturing December 7, 2020		850		847,344
Orbotech, Inc.
Term Loan, 5.00%, Maturing August 6, 2020		180		177,030


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Electronics / Electrical (continued)
Renaissance Learning, Inc.
Term Loan, 4.50%, Maturing April 9, 2021		1,088	$	1,045,119
Term Loan - Second Lien, 8.00%, Maturing April 11, 2022		125		115,313
Rocket Software, Inc.
Term Loan, 5.75%, Maturing February 8, 2018		214		213,020
Term Loan - Second Lien, 10.25%, Maturing February 8, 2019		250		249,063
RP Crown Parent, LLC
Term Loan, 6.00%, Maturing December 21, 2018		2,807		2,512,012
SGS Cayman L.P.
Term Loan, 6.00%, Maturing April 23, 2021		98		97,649
SkillSoft Corporation
Term Loan, 5.75%, Maturing April 28, 2021		1,758		1,371,268
Smart Technologies ULC
Term Loan, 10.50%, Maturing January 31, 2018		270		261,322
SS&C Technologies, Inc.
Term Loan, 4.01%, Maturing July 8, 2022		964		959,301
Term Loan, 4.02%, Maturing July 8, 2022		142		141,176
SunEdison Semiconductor B.V.
Term Loan, 6.50%, Maturing May 27, 2019		979		968,902
SurveyMonkey, Inc.
Term Loan, 6.25%, Maturing February 5, 2019		1,008		990,833
Sutherland Global Services, Inc.
Term Loan, 6.00%, Maturing April 23, 2021		421		419,493
Sybil Software, LLC
Term Loan, 4.25%, Maturing March 20, 2020		780		776,376
Vertafore, Inc.
Term Loan, 4.25%, Maturing October 3, 2019		958		951,407
Wall Street Systems Delaware, Inc.
Term Loan, 4.50%, Maturing April 30, 2021		632		624,949
Zebra Technologies Corporation
Term Loan, 4.75%, Maturing October 27, 2021		971		973,602

			$	32,896,796


Financial Intermediaries — 5.1%
Armor Holding II, LLC
Term Loan, 5.75%, Maturing June 26, 2020		988	$	960,625
Term Loan - Second Lien, 10.25%, Maturing December 26, 2020		725		703,250
Citco Funding, LLC
Term Loan, 4.25%, Maturing June 29, 2018		1,510		1,501,719
First Data Corporation
Term Loan, 3.92%, Maturing March 24, 2018		2,695		2,664,382


		9		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Financial Intermediaries (continued)
First Data Corporation (continued)
Term Loan, 3.92%, Maturing September 24, 2018			950	$	939,431
Term Loan, 4.17%, Maturing July 8, 2022			375		370,045
Grosvenor Capital Management Holdings, LLP
Term Loan, 3.75%, Maturing January 4, 2021			548		528,976
Guggenheim Partners, LLC
Term Loan, 4.25%, Maturing July 22, 2020			662		658,902
Hamilton Lane Advisors, LLC
Term Loan, 4.25%, Maturing July 9, 2022			249		248,128
Harbourvest Partners, LLC
Term Loan, 3.25%, Maturing February 4, 2021			386		383,803
Medley, LLC
Term Loan, 6.50%, Maturing June 15, 2019			238		241,063
NXT Capital, Inc.
Term Loan, 6.25%, Maturing September 4, 2018			49		49,119
Term Loan, 6.25%, Maturing September 4, 2018			323		322,517
Term Loan, 6.25%, Maturing September 4, 2018			342		342,116
Ocwen Financial Corporation
Term Loan, 5.50%, Maturing February 15, 2018			580		579,921
Sesac Holdco II, LLC
Term Loan, 5.25%, Maturing February 8, 2019			480		475,553
Starwood Property Trust, Inc.
Term Loan, 3.50%, Maturing April 17, 2020			122		119,359
Walker & Dunlop, Inc.
Term Loan, 5.25%, Maturing December 11, 2020			313		313,582
Walter Investment Management Corp.
Term Loan, 4.75%, Maturing December 19, 2020			1,158		1,003,055

				$	12,405,546


Food Products — 5.3%
AdvancePierre Foods, Inc.
Term Loan, 5.75%, Maturing July 10, 2017			1,516	$	1,515,418
Term Loan - Second Lien, 9.50%, Maturing October 10, 2017			350		344,750
Blue Buffalo Company Ltd.
Term Loan, 3.75%, Maturing August 8, 2019			629		627,461
Charger OpCo B.V.
Term Loan, 4.25%, Maturing July 2, 2022	EUR		267		289,107
Term Loan, 4.25%, Maturing July 2, 2022			1,043		1,036,886
Clearwater Seafoods Limited Partnership
Term Loan, 4.75%, Maturing June 26, 2019			450		449,116
Del Monte Foods, Inc.
Term Loan, 4.26%, Maturing February 18, 2021			339		326,401
Term Loan - Second Lien, 8.25%, Maturing August 18, 2021			763		627,791


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Food Products (continued)
Diamond Foods, Inc.
Term Loan, 4.25%, Maturing August 20, 2018			96	$	95,925
Dole Food Company, Inc.
Term Loan, 4.50%, Maturing November 1, 2018			624		620,708
High Liner Foods Incorporated
Term Loan, 4.25%, Maturing April 24, 2021			418		412,343
JBS USA, LLC
Term Loan, 3.75%, Maturing May 25, 2018			864		860,703
Term Loan, 3.75%, Maturing September 18, 2020			758		753,301
Term Loan, 4.00%, Maturing October 30, 2022			325		320,426
Meldrew Participations B.V.
Term Loan, 8.00%, (5.00% Cash, 3.00% PIK), Maturing October 31, 2019	EUR		338		314,149
Term Loan, 4.50%, (0.00% Cash, 4.50% PIK), Maturing December 19, 2022⁽⁴⁾	EUR		214		124,494
NBTY, Inc.
Term Loan, 3.50%, Maturing October 1, 2017			4,021		3,936,537
Post Holdings, Inc.
Term Loan, 3.75%, Maturing June 2, 2021			130		129,917

				$	12,785,433


Food Service — 3.8%
1011778 B.C. Unlimited Liability Company
Term Loan, 3.75%, Maturing December 12, 2021			2,308	$	2,296,977
Aramark Services, Inc.
Term Loan, 3.69%, Maturing July 26, 2016			36		35,928
Term Loan, 3.70%, Maturing July 26, 2016			20		20,284
Centerplate, Inc.
Term Loan, 4.75%, Maturing November 26, 2019			247		245,625
Landry’s, Inc.
Term Loan, 4.00%, Maturing April 24, 2018			1,036		1,032,029
NPC International, Inc.
Term Loan, 4.75%, Maturing December 28, 2018			337		333,927
P.F. Chang’s China Bistro, Inc.
Term Loan, 4.25%, Maturing July 2, 2019			189		180,612
Seminole Hard Rock Entertainment, Inc.
Term Loan, 3.50%, Maturing May 14, 2020			122		119,742
US Foods, Inc.
Term Loan, 4.50%, Maturing March 31, 2019			2,340		2,320,988
Weight Watchers International, Inc.
Term Loan, 4.00%, Maturing April 2, 2020			3,501		2,577,611

				$	9,163,723


		10		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Food / Drug Retailers — 2.7%
Albertsons, LLC
Term Loan, 5.50%, Maturing March 21, 2019		1,008	$	1,004,318
Term Loan, 5.13%, Maturing August 25, 2019		1,540		1,527,488
Term Loan, 5.50%, Maturing August 25, 2021		447		443,554
Rite Aid Corporation
Term Loan - Second Lien, 5.75%, Maturing August 21, 2020		725		728,776
Term Loan - Second Lien, 4.88%, Maturing June 21, 2021		750		749,297
Supervalu, Inc.
Term Loan, 4.50%, Maturing March 21, 2019		2,080		2,055,495

			$	6,508,928


Health Care — 15.8%
Acadia Healthcare Company, Inc.
Term Loan, 4.25%, Maturing February 11, 2022		124	$	124,059
ADMI Corp.
Term Loan, 5.50%, Maturing April 30, 2022		149		149,312
Akorn, Inc.
Term Loan, 6.00%, Maturing April 16, 2021		543		530,226
Albany Molecular Research, Inc.
Term Loan, 5.75%, Maturing July 16, 2021		349		347,379
Alere, Inc.
Term Loan, 4.25%, Maturing June 18, 2022		788		782,546
Alliance Healthcare Services, Inc.
Term Loan, 4.25%, Maturing June 3, 2019		603		575,395
Amneal Pharmaceuticals, LLC
Term Loan, 4.50%, Maturing November 1, 2019		834		819,374
AmSurg Corp.
Term Loan, 3.50%, Maturing July 16, 2021		296		293,366
Ardent Legacy Acquisitions, Inc.
Term Loan, 6.50%, Maturing July 21, 2021		249		248,128
ATI Holdings, Inc.
Term Loan, 5.25%, Maturing December 20, 2019		465		462,867
Auris Luxembourg III S.a.r.l.
Term Loan, 4.25%, Maturing January 15, 2022		372		370,719
BioScrip, Inc.
Term Loan, 6.50%, Maturing July 31, 2020		375		343,594
Term Loan, 6.50%, Maturing July 31, 2020		625		572,656
CareCore National, LLC
Term Loan, 5.50%, Maturing March 5, 2021		1,712		1,463,822
CeramTec Acquisition Corporation
Term Loan, 4.25%, Maturing August 30, 2020		15		15,389
CHG Healthcare Services, Inc.
Term Loan, 4.25%, Maturing November 19, 2019		536		527,546


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Health Care (continued)
Community Health Systems, Inc.
Term Loan, 3.75%, Maturing December 31, 2019		1,224	$	1,195,391
Term Loan, 4.00%, Maturing January 27, 2021		2,253		2,216,736
Concentra, Inc.
Term Loan, 4.00%, Maturing June 1, 2022		149		148,504
CPI Buyer, LLC
Term Loan, 5.50%, Maturing August 18, 2021		494		475,235
DaVita HealthCare Partners, Inc.
Term Loan, 3.50%, Maturing June 24, 2021		1,551		1,546,713
DJO Finance, LLC
Term Loan, 4.25%, Maturing June 8, 2020		1,047		1,020,318
Envision Healthcare Corporation
Term Loan, 4.25%, Maturing May 25, 2018		1,537		1,532,664
Faenza Acquisition GmbH
Term Loan, 4.25%, Maturing August 30, 2020		45		44,951
Term Loan, 4.25%, Maturing August 30, 2020		149		147,717
Global Healthcare Exchange, LLC
Term Loan, 5.50%, Maturing August 15, 2022		524		520,578
Greatbatch Ltd.
Term Loan, 5.25%, Maturing October 27, 2022		450		447,610
Iasis Healthcare, LLC
Term Loan, 4.50%, Maturing May 3, 2018		810		796,705
Indivior Finance S.a.r.l.
Term Loan, 7.00%, Maturing December 19, 2019		475		450,063
inVentiv Health, Inc.
Term Loan, 7.75%, Maturing May 15, 2018		304		300,212
Term Loan, 7.75%, Maturing May 15, 2018		1,743		1,719,989
Jaguar Holding Company II
Term Loan, 4.25%, Maturing August 18, 2022		2,164		2,108,399
Kindred Healthcare, Inc.
Term Loan, 4.25%, Maturing April 9, 2021		714		689,131
Kinetic Concepts, Inc.
Term Loan, 4.50%, Maturing May 4, 2018		2,430		2,342,903
Knowledge Universe Education, LLC
Term Loan, 6.00%, Maturing July 28, 2022		549		534,909
LHP Hospital Group, Inc.
Term Loan, 9.00%, Maturing July 3, 2018		745		730,423
MedAssets, Inc.
Term Loan, 4.00%, Maturing December 13, 2019		173		171,666
National Mentor Holdings, Inc.
Term Loan, 4.25%, Maturing January 31, 2021		270		263,320
New Millennium HoldCo, Inc.
Term Loan, 7.50%, Maturing December 21, 2020		1,203		1,101,235
Onex Carestream Finance L.P.
Term Loan, 5.00%, Maturing June 7, 2019		1,779		1,636,966


		11		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Health Care (continued)
Opal Acquisition, Inc.
Term Loan, 5.00%, Maturing November 27, 2020			1,606	$	1,359,373
Ortho-Clinical Diagnostics, Inc.
Term Loan, 4.75%, Maturing June 30, 2021			1,527		1,303,463
Physio-Control International, Inc.
Term Loan, 5.50%, Maturing June 6, 2022			225		221,344
PRA Holdings, Inc.
Term Loan, 4.50%, Maturing September 23, 2020			484		479,464
Radnet Management, Inc.
Term Loan, 4.27%, Maturing October 10, 2018			955		947,727
RCHP, Inc.
Term Loan, 6.00%, Maturing April 23, 2019			789		779,662
Sage Products Holdings III, LLC
Term Loan, 4.25%, Maturing December 13, 2019			539		533,578
Select Medical Corporation
Term Loan, 5.00%, Maturing June 1, 2018			652		649,703
Sterigenics-Nordion Holdings, LLC
Term Loan, 4.25%, Maturing May 15, 2022			349		340,397
Steward Health Care System, LLC
Term Loan, 6.75%, Maturing April 12, 2020			171		166,359
Tecomet, Inc.
Term Loan, 5.75%, Maturing December 5, 2021			569		523,710
Truven Health Analytics, Inc.
Term Loan, 4.50%, Maturing June 6, 2019			1,077		1,033,781

				$	38,107,277


Home Furnishings — 0.3%
Serta Simmons Holdings, LLC
Term Loan, 4.25%, Maturing October 1, 2019			753	$	750,433

				$	750,433


Industrial Equipment — 4.2%
Apex Tool Group, LLC
Term Loan, 4.50%, Maturing January 31, 2020			862	$	824,771
Delachaux S.A.
Term Loan, 4.50%, Maturing October 28, 2021			207		206,426
Doosan Infracore International, Inc.
Term Loan, 4.50%, Maturing May 28, 2021			499		493,199
Filtration Group Corporation
Term Loan - Second Lien, 8.25%, Maturing November 21, 2021			79		76,663
Gardner Denver, Inc.
Term Loan, 4.25%, Maturing July 30, 2020			1,595		1,441,797
Term Loan, 4.75%, Maturing July 30, 2020	EUR		196		195,569


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Industrial Equipment (continued)
Husky Injection Molding Systems Ltd.
Term Loan, 4.25%, Maturing June 30, 2021			1,351	$	1,305,200
Term Loan - Second Lien, 7.25%, Maturing June 30, 2022			207		200,956
Milacron, LLC
Term Loan, 4.50%, Maturing September 28, 2020			561		556,673
Paladin Brands Holding, Inc.
Term Loan, 7.25%, Maturing August 16, 2019			332		311,615
Rexnord, LLC
Term Loan, 4.00%, Maturing August 21, 2020			2,224		2,160,805
Signode Industrial Group US, Inc.
Term Loan, 3.75%, Maturing May 1, 2021			480		462,243
STS Operating, Inc.
Term Loan, 4.75%, Maturing February 12, 2021			147		139,269
Tank Holding Corp.
Term Loan, 5.25%, Maturing March 16, 2022			371		365,591
Terex Corporation
Term Loan, 3.50%, Maturing August 13, 2021	EUR		765		819,228
VAT Lux III S.a.r.l.
Term Loan, 4.25%, Maturing February 11, 2021			176		173,663
Wittur GmbH
Term Loan, 6.00%, Maturing February 10, 2022	EUR		450		482,721

				$	10,216,389


Insurance — 5.1%
Alliant Holdings I, Inc.
Term Loan, 4.50%, Maturing August 12, 2022			920	$	902,831
AmWINS Group, LLC
Term Loan, 5.25%, Maturing September 6, 2019			2,380		2,378,422
AssuredPartners, Inc.
Term Loan, 5.75%, Maturing October 21, 2022			350		348,687
Term Loan - Second Lien, 10.00%, Maturing October 20, 2023			350		343,000
Asurion, LLC
Term Loan, 5.00%, Maturing May 24, 2019			2,019		1,909,018
Term Loan, 5.00%, Maturing August 4, 2022			2,562		2,367,831
Term Loan - Second Lien, 8.50%, Maturing March 3, 2021			1,100		943,937
CGSC of Delaware Holding Corporation
Term Loan, 5.00%, Maturing April 16, 2020			244		235,219
Cunningham Lindsey U.S., Inc.
Term Loan, 5.00%, Maturing December 10, 2019⁽³⁾			452		309,441
Hub International Limited
Term Loan, 4.00%, Maturing October 2, 2020			1,369		1,291,638


		12		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Insurance (continued)
USI, Inc.
Term Loan, 4.25%, Maturing December 27, 2019		1,190	$	1,150,493

			$	12,180,517


Leisure Goods / Activities / Movies — 5.5%
AMC Entertainment, Inc.
Term Loan, 4.00%, Maturing December 15, 2022		1,050	$	1,050,131
Ancestry.com, Inc.
Term Loan, 5.00%, Maturing August 17, 2022		748		745,320
Bombardier Recreational Products, Inc.
Term Loan, 3.75%, Maturing January 30, 2019		603		597,431
Bright Horizons Family Solutions, Inc.
Term Loan, 4.00%, Maturing January 30, 2020		437		436,459
CDS U.S. Intermediate Holdings, Inc.
Term Loan, 5.00%, Maturing July 8, 2022		200		188,777
ClubCorp Club Operations, Inc.
Term Loan, Maturing December 15, 2022⁽²⁾		925		921,531
Emerald Expositions Holding, Inc.
Term Loan, 4.75%, Maturing June 17, 2020		458		452,709
Fender Musical Instruments Corporation
Term Loan, 5.75%, Maturing April 3, 2019		133		131,132
Lindblad Expeditions, Inc.
Term Loan, 5.50%, Maturing May 8, 2021		68		67,887
Term Loan, 5.50%, Maturing May 8, 2021		529		526,128
Live Nation Entertainment, Inc.
Term Loan, 3.50%, Maturing August 16, 2020		1,257		1,255,890
LTF Merger Sub, Inc.
Term Loan, 4.25%, Maturing June 10, 2022		672		654,829
Nord Anglia Education Finance, LLC
Term Loan, 5.00%, Maturing March 31, 2021		814		793,764
Sabre, Inc.
Term Loan, 4.00%, Maturing February 19, 2019		582		576,908
SeaWorld Parks & Entertainment, Inc.
Term Loan, 3.00%, Maturing May 14, 2020		1,341		1,259,349
Sonifi Solutions, Inc.
Term Loan, 6.75%, Maturing March 28, 2018⁽³⁾		442		77,297
SRAM, LLC
Term Loan, 4.02%, Maturing April 10, 2020		827		686,193
Steinway Musical Instruments, Inc.
Term Loan, 4.75%, Maturing September 19, 2019		1,000		995,625
Town Sports International, Inc.
Term Loan, 4.50%, Maturing November 15, 2020		587		237,681
WMG Acquisition Corp.
Term Loan, 3.75%, Maturing July 1, 2020		269		255,506


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Leisure Goods / Activities / Movies (continued)
Zuffa, LLC
Term Loan, 3.75%, Maturing February 25, 2020			1,407	$	1,374,168

				$	13,284,715


Lodging and Casinos — 5.6%
Affinity Gaming, LLC
Term Loan, 5.25%, Maturing November 9, 2017			206	$	205,845
Amaya Holdings B.V.
Term Loan, 5.00%, Maturing August 1, 2021			1,657		1,551,636
Term Loan - Second Lien, 8.00%, Maturing August 1, 2022			998		998,438
Boyd Gaming Corporation
Term Loan, 4.00%, Maturing August 14, 2020			203		202,297
Caesars Entertainment Operating Company
Term Loan, 0.00%, Maturing March 1, 2017⁽⁵⁾			597		525,130
CityCenter Holdings, LLC
Term Loan, 4.25%, Maturing October 16, 2020			377		375,288
Four Seasons Holdings, Inc.
Term Loan - Second Lien, 6.25%, Maturing December 27, 2020			1,800		1,797,000
Gala Group Finance PLC
Term Loan, 5.51%, Maturing May 27, 2018	GBP		825		1,216,284
Golden Nugget, Inc.
Term Loan, 5.50%, Maturing November 21, 2019			64		63,892
Term Loan, 5.50%, Maturing November 21, 2019			148		147,125
Hilton Worldwide Finance, LLC
Term Loan, 3.50%, Maturing October 26, 2020			2,140		2,138,423
La Quinta Intermediate Holdings, LLC
Term Loan, 3.75%, Maturing April 14, 2021			477		466,223
MGM Resorts International
Term Loan, 3.50%, Maturing December 20, 2019			1,261		1,247,209
Pinnacle Entertainment, Inc.
Term Loan, 3.75%, Maturing August 13, 2020			137		137,182
Playa Resorts Holding B.V.
Term Loan, 4.00%, Maturing August 9, 2019			244		237,655
Scientific Games International, Inc.
Term Loan, 6.00%, Maturing October 18, 2020			1,789		1,649,444
Term Loan, 6.00%, Maturing October 1, 2021			421		385,512
Tropicana Entertainment, Inc.
Term Loan, 4.00%, Maturing November 27, 2020			171		170,207

				$	13,514,790


		13		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Nonferrous Metals / Minerals — 2.5%
Alpha Natural Resources, LLC
DIP Loan, 10.00%, Maturing January 31, 2017		125	$	119,375
Term Loan, 3.50%, Maturing May 22, 2020		890		399,635
Arch Coal, Inc.
Term Loan, 6.25%, Maturing May 16, 2018		1,424		657,470
Dynacast International, LLC
Term Loan, 4.50%, Maturing January 28, 2022		298		290,306
Fairmount Santrol, Inc.
Term Loan, 4.50%, Maturing September 5, 2019		1,226		614,647
Murray Energy Corporation
Term Loan, 7.00%, Maturing April 16, 2017		149		119,890
Term Loan, 7.50%, Maturing April 16, 2020		920		593,129
Noranda Aluminum Acquisition Corporation
Term Loan, 5.75%, Maturing February 28, 2019		505		257,288
Novelis, Inc.
Term Loan, 4.00%, Maturing June 2, 2022		1,294		1,238,123
Oxbow Carbon, LLC
Term Loan, 4.25%, Maturing July 19, 2019		676		634,902
Term Loan - Second Lien, 8.00%, Maturing January 17, 2020		1,025		862,281
United Central Industrial Supply Company, LLC
Term Loan - Second Lien, 12.50%, Maturing April 9, 2019⁽³⁾		250		154,200

			$	5,941,246


Oil and Gas — 4.4%
Ameriforge Group, Inc.
Term Loan, 5.00%, Maturing December 19, 2019		585	$	181,435
Bronco Midstream Funding, LLC
Term Loan, 5.00%, Maturing August 15, 2020		957		789,475
CITGO Holding, Inc.
Term Loan, 9.50%, Maturing May 12, 2018		464		463,582
CITGO Petroleum Corporation
Term Loan, 4.50%, Maturing July 29, 2021		469		454,991
Crestwood Holdings, LLC
Term Loan, 7.00%, Maturing June 19, 2019		878		557,716
Drillships Ocean Ventures, Inc.
Term Loan, 5.50%, Maturing July 25, 2021		1,015		487,041
Energy Transfer Equity L.P.
Term Loan, 4.00%, Maturing December 2, 2019		186		169,501
Fieldwood Energy, LLC
Term Loan, 3.88%, Maturing September 28, 2018		513		351,747
Term Loan - Second Lien, 8.38%, Maturing September 30, 2020		850		133,875


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Oil and Gas (continued)
Floatel International Ltd.
Term Loan, 6.00%, Maturing June 27, 2020		1,084	$	490,324
MEG Energy Corp.
Term Loan, 3.75%, Maturing March 31, 2020		3,653		3,205,573
Paragon Offshore Finance Company
Term Loan, 3.75%, Maturing July 18, 2021		420		122,759
Samson Investment Company
Term Loan - Second Lien, 0.00%, Maturing September 25, 2018⁽⁵⁾		925		46,250
Seadrill Partners Finco, LLC
Term Loan, 4.00%, Maturing February 21, 2021		2,185		903,839
Seventy Seven Operating, LLC
Term Loan, 3.75%, Maturing June 25, 2021		246		180,789
Sheridan Investment Partners II L.P.
Term Loan, 4.25%, Maturing December 16, 2020		17		9,947
Term Loan, 4.25%, Maturing December 16, 2020		46		26,670
Term Loan, 4.25%, Maturing December 16, 2020		329		191,723
Sheridan Production Partners I, LLC
Term Loan, 4.25%, Maturing October 1, 2019		104		61,225
Term Loan, 4.25%, Maturing October 1, 2019		170		100,237
Term Loan, 4.25%, Maturing October 1, 2019		1,282		756,457
Southcross Holdings Borrower L.P.
Term Loan, 6.00%, Maturing August 4, 2021		197		106,873
Targa Resources Corp.
Term Loan, 5.75%, Maturing February 25, 2022		130		126,651
Tervita Corporation
Term Loan, 6.25%, Maturing May 15, 2018		917		713,767

			$	10,632,447


Publishing — 2.9%
682534 N.B., Inc.
Term Loan, 12.00%, (8.00% Cash, 4.00% PIK), Maturing October 1, 2020⁽³⁾		162	$	129,362
Ascend Learning, LLC
Term Loan, 5.50%, Maturing July 31, 2019		860		858,183
Getty Images, Inc.
Term Loan, 4.75%, Maturing October 18, 2019		2,866		1,818,372
Laureate Education, Inc.
Term Loan, 5.00%, Maturing June 15, 2018		2,097		1,761,518
McGraw-Hill Global Education Holdings, LLC
Term Loan, 4.75%, Maturing March 22, 2019		354		349,783
Merrill Communications, LLC
Term Loan, 6.25%, Maturing June 1, 2022		298		272,859
Multi Packaging Solutions, Inc.
Term Loan, 4.25%, Maturing September 30, 2020		139		135,521


		14		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Publishing (continued)
Penton Media, Inc.
Term Loan, 4.75%, Maturing October 3, 2019		315	$	313,320
ProQuest, LLC
Term Loan, 5.75%, Maturing October 24, 2021		819		797,722
Springer Science+Business Media Deutschland GmbH
Term Loan, 4.75%, Maturing August 14, 2020		687		659,987

			$	7,096,627


Radio and Television — 4.7%
ALM Media Holdings, Inc.
Term Loan, 5.50%, Maturing July 31, 2020		218	$	196,782
AP NMT Acquisition B.V.
Term Loan, 6.75%, Maturing August 13, 2021		1,017		910,579
Block Communications, Inc.
Term Loan, 4.00%, Maturing November 7, 2021		123		122,512
CCO Safari III, LLC
Term Loan, 3.50%, Maturing January 24, 2023		1,000		999,250
Cumulus Media Holdings, Inc.
Term Loan, 4.25%, Maturing December 23, 2020		2,045		1,557,535
Entercom Radio, LLC
Term Loan, 4.00%, Maturing November 23, 2018		178		177,127
Gray Television, Inc.
Term Loan, 3.75%, Maturing June 10, 2021		134		132,243
Hubbard Radio, LLC
Term Loan, 4.25%, Maturing May 27, 2022		323		300,990
iHeartCommunications, Inc.
Term Loan, 7.17%, Maturing January 30, 2019		1,066		751,727
Term Loan, 7.92%, Maturing July 30, 2019		182		128,550
MGOC, Inc.
Term Loan, 4.00%, Maturing July 31, 2020		656		648,702
Mission Broadcasting, Inc.
Term Loan, 3.75%, Maturing October 1, 2020		320		318,805
Nexstar Broadcasting, Inc.
Term Loan, 3.75%, Maturing October 1, 2020		363		361,530
Raycom TV Broadcasting, LLC
Term Loan, 3.75%, Maturing August 4, 2021		431		428,888
Sinclair Television Group, Inc.
Term Loan, 3.00%, Maturing April 9, 2020		267		264,218
TWCC Holding Corp.
Term Loan, 5.75%, Maturing February 11, 2020		995		995,454
Term Loan - Second Lien, 7.00%, Maturing June 26, 2020		1,100		1,098,282


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Radio and Television (continued)
Univision Communications, Inc.
Term Loan, 4.00%, Maturing March 1, 2020			2,103	$	2,062,977

				$	11,456,151


Retailers (Except Food and Drug) — 9.2%
99 Cents Only Stores
Term Loan, 4.50%, Maturing January 11, 2019			484	$	319,138
B&M Retail Limited
Term Loan, 3.34%, Maturing May 21, 2019	GBP		175		255,912
Term Loan, 3.84%, Maturing April 28, 2020	GBP		150		219,859
Bass Pro Group, LLC
Term Loan, 4.00%, Maturing June 5, 2020			1,148		1,106,713
CDW, LLC
Term Loan, 3.25%, Maturing April 29, 2020			2,675		2,615,933
David’s Bridal, Inc.
Term Loan, 5.25%, Maturing October 11, 2019			311		260,216
Dollar Tree, Inc.
Term Loan, 3.50%, Maturing July 6, 2022			1,416		1,414,048
Evergreen Acqco 1 L.P.
Term Loan, 5.00%, Maturing July 9, 2019			338		275,078
Harbor Freight Tools USA, Inc.
Term Loan, 4.75%, Maturing July 26, 2019			501		501,939
J. Crew Group, Inc.
Term Loan, 4.00%, Maturing March 5, 2021			1,404		912,942
Jo-Ann Stores, Inc.
Term Loan, 4.00%, Maturing March 16, 2018			1,288		1,204,740
Men’s Wearhouse, Inc. (The)
Term Loan, 4.50%, Maturing June 18, 2021			739		657,981
Michaels Stores, Inc.
Term Loan, 3.75%, Maturing January 28, 2020			1,243		1,231,626
Term Loan, 4.00%, Maturing January 28, 2020			406		403,804
Neiman Marcus Group, Inc. (The)
Term Loan, 4.25%, Maturing October 25, 2020			2,083		1,848,953
Party City Holdings, Inc.
Term Loan, 4.25%, Maturing August 19, 2022			1,322		1,286,581
Pep Boys-Manny, Moe & Jack (The)
Term Loan, 5.50%, Maturing October 11, 2018			218		218,179
Petco Animal Supplies, Inc.
Term Loan, 4.00%, Maturing November 24, 2017			1,553		1,550,705
PetSmart, Inc.
Term Loan, 4.25%, Maturing March 11, 2022			2,338		2,284,543
PFS Holding Corporation
Term Loan, 4.50%, Maturing January 31, 2021			765		692,244
Pier 1 Imports (U.S.), Inc.
Term Loan, 4.50%, Maturing April 30, 2021			246		226,550


		15		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Borrower/Tranche Description		Principal Amount* (000’s omitted)		Value


Retailers (Except Food and Drug) (continued)
Pilot Travel Centers, LLC
Term Loan, 3.75%, Maturing October 1, 2021			727	$	729,946
Spin Holdco, Inc.
Term Loan, 4.25%, Maturing November 14, 2019			1,272		1,225,920
Toys ‘R’ Us Property Company I, LLC
Term Loan, 6.00%, Maturing August 21, 2019			377		340,835
Vivarte SA
Term Loan, 11.00%, (4.00% Cash, 7.00% PIK), Maturing October 29, 2019⁽⁶⁾	EUR		155		168,128
Term Loan, 5.00%, (1.25% Cash, 3.75% PIK), Maturing October 29, 2020⁽⁷⁾	EUR		171		122,602
Wilton Brands, LLC
Term Loan, 8.50%, Maturing August 30, 2018			250		238,676

				$	22,313,791


Steel — 1.6%
FMG Resources (August 2006) Pty. Ltd.
Term Loan, 4.25%, Maturing June 30, 2019			4,386	$	3,292,724
JMC Steel Group, Inc.
Term Loan, 4.75%, Maturing April 1, 2017			300		290,956
Neenah Foundry Company
Term Loan, 6.75%, Maturing April 26, 2017			181		179,769

				$	3,763,449


Surface Transport — 0.7%
Hertz Corporation (The)
Term Loan, 3.75%, Maturing March 11, 2018			897	$	896,315
Kenan Advantage Group, Inc.
Term Loan, 1.50%, Maturing January 23, 2017⁽⁸⁾			24		23,637
Term Loan, 4.00%, Maturing July 31, 2022			55		53,851
Term Loan, 4.00%, Maturing July 31, 2022			171		168,829
Stena International S.a.r.l.
Term Loan, 4.00%, Maturing March 3, 2021			737		626,344

				$	1,768,976


Telecommunications — 4.4%
Intelsat Jackson Holdings S.A.
Term Loan, 3.75%, Maturing June 30, 2019			3,700	$	3,509,450
IPC Corp.
Term Loan, 5.50%, Maturing August 6, 2021			1,067		1,008,256
Mitel US Holdings, Inc.
Term Loan, 5.50%, Maturing April 29, 2022			373		370,016
Syniverse Holdings, Inc.
Term Loan, 4.00%, Maturing April 23, 2019			912		677,037


Borrower/Tranche Description	Principal Amount* (000’s omitted)		Value


Telecommunications (continued)
Syniverse Holdings, Inc. (continued)
Term Loan, 4.00%, Maturing April 23, 2019		1,006	$	746,919
Telesat Canada
Term Loan, 3.50%, Maturing March 28, 2019		3,330		3,288,337
Windstream Corporation
Term Loan, 3.50%, Maturing August 8, 2019		947		919,585

			$	10,519,600


Utilities — 4.3%
Calpine Construction Finance Company L.P.
Term Loan, 3.00%, Maturing May 3, 2020		512	$	485,855
Term Loan, 3.25%, Maturing January 31, 2022		195		185,424
Calpine Corporation
Term Loan, 4.00%, Maturing October 9, 2019		411		403,049
Term Loan, 3.50%, Maturing May 27, 2022		1,542		1,469,476
Dynegy Holdings, Inc.
Term Loan, 4.00%, Maturing April 23, 2020		465		450,759
EFS Cogen Holdings I, LLC
Term Loan, 3.75%, Maturing December 17, 2020		213		206,418
Electrical Components International, Inc.
Term Loan, 5.75%, Maturing May 28, 2021		667		663,188
Energy Future Intermediate Holding Co., LLC
DIP Loan, 4.25%, Maturing June 19, 2016		850		848,539
EWT Holdings III Corp.
Term Loan, 4.75%, Maturing January 15, 2021		196		193,060
Term Loan - Second Lien, 8.50%, Maturing January 15, 2022		900		868,500
Granite Acquisition, Inc.
Term Loan, 5.00%, Maturing December 19, 2021		54		48,295
Term Loan, 5.00%, Maturing December 19, 2021		1,209		1,086,635
Invenergy Thermal Operating I, LLC
Term Loan, 6.50%, Maturing October 7, 2022		100		96,758
La Frontera Generation, LLC
Term Loan, 4.50%, Maturing September 30, 2020		1,251		1,189,485
Lonestar Generation, LLC
Term Loan, 5.25%, Maturing February 20, 2021		569		439,768
Longview Power, LLC
Term Loan, 7.00%, Maturing April 13, 2021		1,368		1,197,109
TPF II Power, LLC
Term Loan, 5.50%, Maturing October 2, 2021		664		650,685

			$	10,483,003


Total Senior Floating-Rate Loans (identified cost $372,216,894)			$	344,114,084


		16		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Corporate Bonds & Notes — 9.5%


Security	Principal Amount* (000’s omitted)		Value


Aerospace and Defense — 0.1%
Aerojet Rocketdyne Holdings, Inc.
7.125%, 3/15/21		30	$	31,350
CBC Ammo, LLC/CBC FinCo, Inc.
7.25%, 11/15/21⁽⁹⁾		30		24,915
Huntington Ingalls Industries, Inc.
5.00%, 11/15/25⁽⁹⁾		5		5,087
Orbital ATK, Inc.
5.25%, 10/1/21		20		20,200
TransDigm, Inc.
7.50%, 7/15/21		10		10,400
6.00%, 7/15/22		30		29,475
6.50%, 7/15/24		30		29,985

			$	151,412


Automotive — 0.0%⁽¹⁰⁾
American Axle & Manufacturing, Inc.
5.125%, 2/15/19		10	$	10,137
General Motors Financial Co., Inc.
4.75%, 8/15/17		40		41,476
3.25%, 5/15/18		5		5,028
Navistar International Corp.
8.25%, 11/1/21		10		6,900

			$	63,541


Beverage and Tobacco — 0.0%⁽¹⁰⁾
Constellation Brands, Inc.
6.00%, 5/1/22		35	$	38,588
4.25%, 5/1/23		40		40,100

			$	78,688


Brokerage / Securities Dealers / Investment Houses — 0.0%⁽¹⁰⁾
Alliance Data Systems Corp.
6.375%, 4/1/20⁽⁹⁾		30	$	30,413

			$	30,413


Building and Development — 0.1%
Builders FirstSource, Inc.
10.75%, 8/15/23⁽⁹⁾		15	$	14,963
Building Materials Corp. of America
5.375%, 11/15/24⁽⁹⁾		25		25,062
6.00%, 10/15/25⁽⁹⁾		30		30,750


Security	Principal Amount* (000’s omitted)		Value


Building and Development (continued)
Greystar Real Estate Partners, LLC
8.25%, 12/1/22⁽⁹⁾		20	$	20,850
HD Supply, Inc.
7.50%, 7/15/20		45		47,025
5.25%, 12/15/21⁽⁹⁾		15		15,356
Hillman Group, Inc. (The)
6.375%, 7/15/22⁽⁹⁾		30		25,050
Nortek, Inc.
8.50%, 4/15/21		20		20,852
Reliance Intermediate Holdings, L.P.
6.50%, 4/1/23⁽⁹⁾		50		52,250
TRI Pointe Holdings, Inc.
4.375%, 6/15/19		20		19,650
5.875%, 6/15/24		25		24,437
USG Corp.
5.875%, 11/1/21⁽⁹⁾		20		20,900
5.50%, 3/1/25⁽⁹⁾		5		5,094

			$	322,239


Business Equipment and Services — 0.1%
Acosta, Inc.
7.75%, 10/1/22⁽⁹⁾		60	$	53,100
Audatex North America, Inc.
6.00%, 6/15/21⁽⁹⁾		30		30,337
FTI Consulting, Inc.
6.00%, 11/15/22		20		21,025
IMS Health, Inc.
6.00%, 11/1/20⁽⁹⁾		40		41,300
ServiceMaster Co., LLC (The)
7.45%, 8/15/27		20		20,000
United Rentals North America, Inc.
7.625%, 4/15/22		15		16,105
6.125%, 6/15/23		15		15,413

			$	197,280


Cable and Satellite Television — 0.8%
AMC Networks, Inc.
7.75%, 7/15/21		20	$	21,100
Cable One, Inc.
5.75%, 6/15/22⁽⁹⁾		5		4,988
CCO Holdings, LLC/CCO Holdings Capital Corp.
5.25%, 9/30/22		80		81,000
5.75%, 1/15/24		5		5,150
5.375%, 5/1/25⁽⁹⁾		40		39,900


		17		See Notes to Financial Statements.

Eaton Vance

Senior Income Trust

December 31, 2015

Portfolio of Investments (Unaudited) — continued


Security		Principal Amount* (000’s omitted)		Value


Cable and Satellite Television (continued)
CSC Holdings, LLC
8.625%, 2/15/19			5	$	5,337
5.25%, 6/1/24			5		4,400
DISH DBS Corp.
6.75%, 6/1/21			75		75,750
5.875%, 7/15/22			15		14,025
5.875%, 11/15/24			10		8,925
IAC/InterActiveCorp
4.875%, 11/30/18			20		20,125
Numericable-SFR SAS
4.875%, 5/15/19⁽⁹⁾			200		198,750
Virgin Media Secured Finance PLC
5.375%, 4/15/21⁽⁹⁾			428		442,997
6.00%, 4/15/21⁽⁹⁾	GBP		428		653,917
5.50%, 1/15/25⁽⁹⁾			275		275,687

				$	1,852,051


Chemicals and Plastics — 0.8%
Hexion, Inc.
6.625%, 4/15/20			2,225	$	1,752,187
Platform Specialty Products Corp.
10.375%, 5/1/21⁽⁹⁾			5		5,000
6.50%, 2/1/22⁽⁹⁾			25		21,750
Scotts Miracle-Gro Co. (The)
6.00%, 10/15/23⁽⁹⁾			5		5,238
Tronox Finance, LLC
6.375%, 8/15/20			50		30,340
7.50%, 3/15/22⁽⁹⁾			10		5,825
W.R. Grace & Co.
5.125%, 10/1/21⁽⁹⁾			15		15,187
5.625%, 10/1/24⁽⁹⁾			5		5,069

				$	1,840,596


Commercial Services — 0.0%⁽¹⁰⁾
CEB, Inc.
5.625%, 6/15/23⁽⁹⁾			10	$	9,950
ExamWorks Group, Inc.
5.625%, 4/15/23			20		19,975

				$	29,925


Conglomerates — 0.1%
Belden, Inc.
5.50%, 9/1/22⁽⁹⁾			10	$	9,675


Security	Principal Amount* (000’s omitted)		Value


Conglomerates (continued)
Spectrum Brands, Inc.
6.375%, 11/15/20		25	$	26,688
6.625%, 11/15/22		20		21,200
5.75%, 7/15/25⁽⁹⁾		30		30,900
TMS International Corp.
7.625%, 10/15/21⁽⁹⁾		20		15,550

			$	104,013


Consumer Products — 0.0%⁽¹⁰⁾
Central Garden & Pet Co.
6.125%, 11/15/23		25	$	25,375

			$	25,375


Containers and Glass Products — 0.9%
Berry Plastics Corp.
6.00%, 10/15/22⁽⁹⁾		10	$	10,225
Beverage Packaging Holdings Luxembourg II SA/Beverage Packaging Holdings II Issuer, Inc.
5.625%, 12/15/16⁽⁹⁾		5		4,956
Owens-Brockway Glass Container, Inc.
5.875%, 8/15/23⁽⁹⁾		15		15,253
6.375%, 8/15/25⁽⁹⁾		5		5,147
Reynolds Group Holdings, Inc.
5.75%, 10/15/20		1,975		2,013,888

			$	2,049,469


Cosmetics / Toiletries — 0.1%
Alphabet Holding Co., Inc.
7.75%, 11/1/17⁽¹¹⁾		105	$	102,638

			$	102,638


Distribution & Wholesale — 0.0%⁽¹⁰⁾
American Tire Distributors, Inc.
10.25%, 3/1/22⁽⁹⁾		30	$	27,600

			$	27,600


Diversified Financial Services — 0.0%⁽¹⁰⁾
Quicken Loans, Inc.
5.75%, 5/1/25⁽⁹⁾		15	$	14,344

			$	14,344