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Instinet Reports U.S. Share Volume For September 2001

Date 08/10/2001

Instinet Group Incorporated (Nasdaq: INET) announced today that its U.S. equity volume in September 2001 totaled 4,713 million shares. This compared to 5,482 million shares in September 2000 and 5,039 million shares in August 2001.

Instinet's average daily volume in September was greater than in both September 2000 and August 2001. (There were only 15 trading days in September after the equity markets closed for four days following the September 11 attacks, compared to 20 trading days in September 2000, and 23 trading days in August 2001.)

Instinet's total volume in U.S. equities in September comprised 3,879 million shares of Nasdaq-listed stocks and 834 million shares of exchange-listed stocks.

Instinet's weekly, monthly and quarterly share volumes may be accessed on its web site at www.instinet.com.

Instinet has experienced significant seasonality in its business, and period-to-period comparisons of operating results are not necessarily meaningful, nor are the results for any period necessarily indicative of results for any future period.