-----------------------------
                                                         OMB APPROVAL
                                                  -----------------------------
                                                  OMB Number:         3235-0060
                                                  Expires:        March 31,2008
                                                  Estimated average burden
                                                  hours per response.......28.0
                                                  -----------------------------
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT
     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934



Date of Report (Date of earliest event reported)     August 4, 2005
                                                --------------------------------


                                  ESPEED, INC.
--------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


           Delaware                     0-28191                  13-4063515
--------------------------------------------------------------------------------
 (State of other jurisdiction         (Commission              (IRS Employer
      of incorporation)               File Number)           Identification No.)


                    110 East 59th Street, New York, NY 10022
--------------------------------------------------------------------------------
                    (Address of principal executive offices)


Registrant's telephone number, including area code            212-938-5000
                                                  ------------------------------


                                       N/A
--------------------------------------------------------------------------------
         (Former name or former address, if changed since last report.)

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 (see General Instruction A.2. below):

[ ]  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 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))



ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION
--------------------------------------------------------

On August 4, 2005, eSpeed, Inc. (the "Registrant") issued a press release
announcing its preliminary operating statistics for the quarter ended June 30,
2005. A copy of the press release is furnished as Exhibit 99.1 to this Current
Report on Form 8-K.

The information in this Current Report on Form 8-K and the Exhibit attached to
this Current Report on Form 8-K are being furnished under Item 2.02 of Form 8-K.
The information shall not be deemed "filed" for purposes of Section 18 of the
Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the
liabilities of that section, nor shall it be deemed incorporated by reference in
any filing under the Securities Act of 1933 or the Exchange Act, except as
expressly set forth by specific reference in such filing.

In the press release, the Registrant uses non-GAAP financial measures of
revenues, income before income tax provision, net income and earnings per share
to supplement its consolidated financial statements presented in accordance with
generally accepted accounting principles, or GAAP, and to better reflect its
quarter-over-quarter and comparative second quarter operating performance. The
Registrant also provides a computation of free cash flows. These non-GAAP
financial measures do not replace the presentation of GAAP financial results but
are provided to enhance overall understanding of the Registrant's current
financial performance and prospects for the future. Specifically, the
Registrant's management believes that the non-GAAP financial results provide
useful information to both management and investors regarding certain additional
financial and business trends relating to its financial condition and results
from operations. In addition, management uses these measures for reviewing the
Registrant's financial results and evaluating its financial performance. eSpeed
considers "non-GAAP net operating income" as after tax income generated from the
Company's continuing operations excluding certain non-recurring or non-core
items such as, but not limited to, asset impairments, litigation judgments,
costs or settlements, restructuring charges, costs related to potential
acquisitions, charitable contributions, insurance proceeds, business partner
securities and similar events. The amortization of patent costs and associated
licensing fees (including those made in settlement of litigation) from such
patents are generally treated as operating items. Material judgments or
settlement amounts paid or received and impairments to all or a portion of such
assets are generally treated as non-operating items. Management does not provide
guidance of GAAP net income because certain items identified as excluded from
non-GAAP net operating income are difficult to forecast.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS
--------------------------------------------

(c)  Exhibits.

     99.1   eSpeed, Inc. press release dated August 4, 2005.


                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report on Form 8-K to be signed on its behalf by
the undersigned hereunto duly authorized.

                                      eSpeed, Inc.


Date:  August 4, 2005                 By:   /s/Howard W. Lutnick
                                          --------------------------------------
                                            Howard W. Lutnick
                                            Chairman and Chief Executive Officer