EXHIBIT 99.1


                                                                    (INET LOGO)
- -------------------------------------------------------------------------------
                          Media Contact                  Investor Contact
- -------------------------------------------------------------------------------
                          Stephen Austin                 John Pitt
                          Instinet Group                 Instinet Group
                          Incorporated                   Incorporated
                          +1 212 310 4037                +1 212 310 7481
                          stephen.austin@instinet.com    john.pitt@instinet.com


                       INET TO JOIN NASDAQ'S SUPERMONTAGE


NEW YORK, NOVEMBER 3, 2003 - Instinet ECN and Island ECN, soon to be combined
into one electronic marketplace branded INET, today announced plans to
participate in NASDAQ's SuperMontage. INET will begin displaying orders on
SuperMontage in January following the consolidation of the Island ECN and
Instinet ECN.

"We are committed to exposing our customers' orders to as much liquidity as
possible and improving the marketplace for all investors," said Alex Goor,
executive vice president, head of Alternative Trading Systems, Instinet
Corporation. "As a result of NASDAQ's recent proposed rule changes, we expect
that participation in SuperMontage will benefit our subscribers."

"With Instinet's participation, SuperMontage offers a deeper pool of liquidity
for NASDAQ market participants and ultimately, enhanced opportunity for best
execution," said Chris Concannon, executive vice president of The NASDAQ Stock
Market. "SuperMontage was designed to provide a highly transparent, highly
liquid venue where multiple parties -- and competing market models -- can come
together to yield the best outcome for investors."

Separately, NASDAQ announced that it intends to use Instinet SmartRouter
technology to provide its members with access to enhanced routing services.
Instinet SmartRouter integrates liquidity pools including all major ECNs through
its order routing algorithm. "NASDAQ is pleased to announce that it intends to
partner with INET to make available Instinet's enhanced order-routing technology
to NASDAQ's SuperMontage participants," Concannon added.

Instinet ECN and Island ECN, soon to be combined into one electronic marketplace
branded INET, will comprise one of the largest liquidity pools in U.S.
over-the-counter securities. The combined entity will collect, prioritize,
display and match orders within its member network and, through the use of
advanced technology, will offer routing services for its U.S.-registered
broker-dealer subscribers. Instinet ECN and Island ECN, in addition to Instinet,
the Institutional Broker, are subsidiaries of Instinet Group Incorporated, part
of the Reuters family of companies.

                                                                    EXHIBIT 99.1


NASDAQ is the world's largest electronic stock market. With approximately 3,400
companies, it lists more companies and, on average, trades more shares per day
than any other U.S. market. It is home to category-defining companies that are
leaders across all areas of business including technology, retail,
communications, financial services, media and biotechnology. For more
information about NASDAQ, visit the NASDAQ Web site at www.NASDAQ.com or the
NASDAQ Newsroom(SM) at www.NASDAQnews.com.


For more information regarding NASDAQ, please contact:

MEDIA CONTACT:

Silvia Davi
646-441-5041
silvia.davi@nasdaq.com

INVESTOR CONTACT:

Paul Warburg
212-401-8742
paul.warburg@nasdaq.com


(c) 2003 Instinet Corporation and its affiliated companies. All rights reserved.
INSTINET is a registered service mark in the United States and other countries
throughout the world. Instinet ECN and Instinet SmartRouter are provided by
Instinet Corporation, member NASD/SIPC. The Island ECN is provided by The Island
ECN, Inc., member NASD/CSE/SIPC. Instinet Corporation and The Island ECN, Inc.
are subsidiaries of Instinet Group Incorporated.

This news release is for informational purposes only and does not constitute an
offer, solicitation or recommendation with respect to the purchase or sale of
any security. While Instinet believes the information in this news release to be
reliable, we do not guarantee its accuracy, and it may be incomplete or
condensed. These statements speak only as of this news release and Instinet
undertakes no obligation to update publicly any of the information contained
herein, in light of new information or future events.

This news release may be deemed to include forward-looking statements relating
to Instinet. Certain important factors that could cause actual results to differ
materially from those disclosed in such forward-looking statements are included
in the Instinet Annual Report Form 10-K dated for the period ended December 31,
2002 and other documents filed with the SEC and available on the Company's web
site at www.InstinetGroup.com.