Last year Broadway's 300 customers, many trading from remote locations, accounted for more than 1 billion shares in Nasdaq trading volume0.7% of its total.

FORBES: Free enterprise comes to Wall Street

Frankfurt already leads Europe's other exchanges in several areas of electronic trading, such as remote access.

ECONOMIST: European stock exchanges

While a remote possibility, the SEC has the option of halting trading midday if trading gets overly erratic.

WSJ: Questions Cloud Market Reopening

Logitech shares are trading sharply lower this morning after the maker of remote controls and PC peripherals reduced its guidance for the fiscal year ending March 2012.

FORBES: Logitech Chops FY 2012 Guidance; Shares Hit The Skids