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Press Release

9/25/2009

CHX ANNOUNCES EXTENDED TRADING HOURS

Chicago, September 25, 2009 – The CHX announced today that beginning Monday, September 28, 2009 it would extend its trading hours with the addition of two new trading sessions. An early session will run from 6:00 AM to 8:30 AM Central Time (CT) and a late session will run from 3:00 PM to 3:15 PM CT. The current “Late Trading Session” has been renamed the “Late Crossing Session” and operates in its current manner from 3:15 PM to 4:00 PM CT.

The new Early Session and Late Trading Session will function in substantially the same manner as trading during the Regular Trading Session, with certain exceptions. Such as:

Any orders in the CHX matching engine will carry over from the Early Session to the Regular Session to the Late Trading Session unless the customer designates otherwise.

The Exchange will not accept Market IOC orders in either the Early or Late Trading Session

Trade through, locked market and crossed market prohibitions do not apply to trade and quote activity in either session.

“In conversations with customers we saw demand for extended trading hours,” explained CHX CEO Dave Herron. “With the initiation of these trading sessions, our customers will be able to capitalize on proprietary trading firms interest in accessing liquidity outside of more traditional trading hours.”

For more detailed information please call Larry Alfred, VP Trading Operations, at 312.663.2417 or visit this link to the CHX website: http://www.chx.com/content/Trading_Information/matchingsys.html

About CHX

CHX is an integral part of the National Market System offering competition to all U.S. equity markets. With a robust matching engine and its CHXConnect routing network, CHX customers can choose to route to the CHX matching engine for immediate display and execution, return or forwarding of rejected orders and/or order-routing to FINRA Market-Makers and CHX Institutional Brokers who are able to provide customized order handling solutions. Orders executed on the CHX enjoy the benefits of an exchange print with full exposure to all National Market System participants. For additional information, please visit www.chx.com.

Media Contact
Drew Mauck, Vivid Ascent, drew@vividascent.com or 312-346-2005