firstqaumbymanager8k.htm - Generated by SEC Publisher for SEC Filing
Washington, D.C. 20549
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report: April 19, 2011
(Date of earliest event reported)
(Exact name of registrant as specified in its charter)
                                Delaware                        1-16725                            42-1520346 
                      (State or other jurisdiction            (Commission file number)             (I.R.S. Employer 
                           of incorporation)                                                     Identification Number) 
711 High Street, Des Moines, Iowa 50392
(Address of principal executive offices)
(515) 247-5111
(Registrant’s telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the 
registrant under any of the following provisions:   
[     ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) 
[     ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) 
[     ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 
[     ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 


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Item 7.01  Regulation FD Disclosure   
This report is filed quarterly to disclose assets under management (“AUM”) by asset manager, 
prior to the availability of Principal Financial Group, Inc's (the "Company") quarterly earnings 
release. The amounts presented herein will be consistent with the format of AUM by asset manager 
and presented again in such format within the Company's financial supplement for the quarter 
ended March 31, 2011 when that document is posted to the Company's investor relations web site 
on or about May 2, 2011. AUM may include assets managed directly and pursuant to dual 
employment agreements among affiliated companies. 
As of March 31, 2011, the assets under management by asset manager were $222.9 billion for 
Principal Global Investors and $46.1 billion for Principal International. 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused 
this report to be signed on its behalf by the undersigned thereunto duly authorized. 
                                                     PRINCIPAL FINANCIAL GROUP, INC. 
                                                               By:        /s/ John Egan                                      
                                                               Name:  John Egan 
                                                     Title:    Vice President – Investor Relations 
Date: April 19, 2011