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): July 19, 2005

Instinet Group Incorporated

-----------------------------------------------------------------------

(Exact Name of Registrant as Specified in Charter)

Delaware 000-32717 13-4134098

---------------------------------------------------------------------(State or Other Jurisdiction (Commission File (IRS Employer of Incorporation) Number) Identification No.)

3 Times Square, New York, New York 10036

-----------------------------------------------------------------------(Address of Principal Executive Offices) (Zip Code)

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

Not Applicable

-----------------------------------------------------------------------

(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 5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF PRINCIPAL OFFICERS

On July 19, 2005, Instinet Group Incorporated ("Instinet Group") announced that its Chief Technology Officer, Andrew Banhidi, will be leaving the company. Instinet Group also announced that it appointed Michael Bundy as Instinet Group's new Chief Technology Officer. The press release is attached hereto as Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits.

Number Description

99.1 Press Release of Instinet Group Incorporated issued July 19, 2005: Instinet Group Names New Technology Officer.

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: July 20, 2005

By: /s/ Paul A. Merolla

------------------------

Paul A. Merolla

Executive Vice President and General Counsel

EXHIBIT INDEX

EXHIBIT NUMBER DESCRIPTION

-------------- -----------

99.1 Press Release of Instinet Group Incorporated issued July 19, 2005: Instinet Group Names New Technology Officer.

INSTINET GROUP INC 8-K