Instinet, a global agency broker and wholly owned subsidiary of Nomura Holdings, Inc., today announced its U.S. average daily volume for July 2007 was 290 million total shares and 31 million shares for CBX, its institutional dark pool.

Instinet also set a one-day firm record in the U.S. of 476 million total shares and 62 million shares traded in CBX on July 26.

“While the recent market volatility has increased volumes across the Street, we were pleased to pick up a disproportionately large piece of the increase, particularly in the U.S.,” said Michael Plunkett, president, North America at Instinet, in a release. “We are especially excited about the exponential growth we’ve seen in recent months in the CBX, which has grown into one of the most substantial continuous dark pools available to institutional clients today.”

Instinet CBX, whose technology powers Instinet’s matching platforms around the world, is an institutional dark pool which passively exposes orders to Instinet’s U.S. order flow of over 1 billion shares daily.