The flash crash and circuit breakers were also debated at a press event at Liquidnet on June 15.

FORBES: Liquidnet CEO Breaks Down The Flash Crash

Liquidnet, which filed its paperwork with the Securities and Exchange Commission for an IPO last July, is still holding out for better market conditions.

FORBES: IPOs Through Year-End

Though preserving large block trading helps retail investors, some of the logistics may need tweaking, says Tony Barchetto, head of sales and strategy at Liquidnet.

FORBES: Magazine Article

Liquidnet, a fast-growing firm that anonymously joins buyers and sellers to negotiate trades without intermediaries, says that its average order size for large-cap stocks in the third quarter was 62, 000 shares.

ECONOMIST: Good times rarely last

Lou Kerner is an analyst for Liquidnet.

WSJ: Corrections & Amplifications

"It was a great head fake for Thain to set up this committee when he had the Archipelago deal in his back pocket, " says Seth Merrin , chief executive of Liquidnet, a privately held electronic marketplace for institutional traders and an NYSE rival.

FORBES: Dumb Like A Trader