UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K/A

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CURRENT REPORT

PURSUANT TO SECTION 13 OR 15 (d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): June 7, 2005

Instinet Group Incorporated

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(Exact Name of Registrant as Specified in Charter)

Delaware 000-32717 13-4134098

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3 Times Square, New York, New York 10036

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Registrant's telephone number, including area code: 212-310-9500

Not Applicable

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(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))

As previously disclosed, Instinet Group Incorporated completed its acquisition of Bridge Trading Company, an agency execution broker, from its parent, Reuters Group PLC, on March 31, 2005.

Item 9.01. Financial Statements and Exhibits.

(a) Financial Statements of Business Acquired

There are no financial statements required to be filed by Item 9.01(a) of Form 8-K.

(b) Pro Forma Financial Information

There are no pro forma financial statements required to be filed by Item 9.01(b) of Form 8-K.

SIGNATURES

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 thereto duly authorized.

INSTINET GROUP INCORPORATED

Registrant

Date: June 7, 2005

By: /s/

John F. Fay

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John F. Fay

Chief Financial Officer

INSTINET GROUP INC 8-K/A