CBSX Utilizing OES MarketGroup for Outbound Routing

NEW YORK and CHICAGO, July 22, 2009 -- OES MarketGroup today announced that CBOE Stock Exchange (CBSX) has begun using OES as an outbound order flow router to other venues to meet CBSX’s Regulation NMS obligations.

CBSX is using OES’s high-speed, low-latency direct connectivity to reach available, better-priced markets, thus enabling options traders and other market participants to obtain best-priced executions at other protected market centers.

“OES provides the benefits of an efficient, innovative routing solution that complements our own CBSX multi-asset trading model,” said David Harris, chief executive officer of CBSX. “OES will help CBSX reduce its operating costs and will further enhance routing for market participants, especially those located in Chicago or those who transact combined stock and options orders.”

CBSX is a fully electronic, Reg NMS-compliant marketplace offering strict price-time priority for all participants and trading in more than 6,500 of the most actively traded New York Stock Exchange (NYSE), American Stock Exchange and NASDAQ Stock Market listed securities, as well as Exchange Traded Funds (ETFs). OES is an independent provider of comprehensive Reg. NMS-compliant market access solutions, including include sponsored access, smart order routing, advanced algorithms and dark liquidity access.

“We are delighted to be working with CBSX to provide our comprehensive routing solutions to the exchange and help enhance its overall service offering,” David Scheckel, chief executive officer of OES MarketGroup, said. “CBSX is emerging as a unique trading venue and is demonstrating its commitment to providing customers a choice in trading equities tied to options order flow. OES is very pleased that the exchange has become part of our growing network of served exchanges and market centers globally.”

About OES MarketGroup

Order Execution Services Holdings, Inc. (www.tradeOES.com), through its wholly-owned technology and broker-dealer subsidiaries, provides seamless electronic market connectivity, liquidity access and rapid executions by linking broker-dealers, trading systems, exchanges and market centers. As an innovative securities industry leader, OES specializes in direct market access and smart order routing, Reg NMS and MiFID compliance tools, sponsored market access, advanced algorithms, agency execution and private inter-market linkages. OES maintains offices in Princeton, Newark, Chicago, Los Angeles, Stamford, and Luxembourg.

About CBOE Stock Exchange

The CBOE Stock Exchange, LLC (CBSX) offers trading in more than 6,500 equities, as well as exchange traded funds (ETFs) listed on U.S. securities markets. The exchange operates as a facility of Chicago Board Options Exchange (CBOE) and uses CBOE’s technology platform, which enables options traders to reduce the cost of equity trading. For equity traders, CBSX provides the opportunity to trade directly with CBOE’s equity options order flow. Established in 2007, CBSX (www.cbsx.com) is owned by CBOE and a consortium of financial entities. CBOE, the largest U.S. options exchange and creator of listed options, continues to set the bar for options trading through product innovation, trading technology and investor education. CBOE offers equity, index and ETF options, including proprietary products, such as options on the S&P 500 Index (SPX) and on the CBOE Volatility Index (VIX).

CBOE Stock Exchange® and CBSX® are registered trademarks of CBOE Stock Exchange, LLC. CBOE® and Chicago Board Options Exchange® are registered trademarks of Chicago Board Options Exchange, Incorporated. CBOE is regulated by the Securities and Exchange Commission (SEC), with all trades cleared by the AAA-rated Options Clearing Corporation.

This press release contains forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. With the exception of historical information contained herein, the matters discussed in this press release involve risk and uncertainties. Actual results could differ materially from those expressed in any forward-looking statement.

©2009 Order Execution Services Holdings, Inc. All rights reserved. OES MarketGroup is a registered trademark in the U.S. and Europe.

Press Contacts:

For OES:
Michael Barth
OES MarketGroup
(609) 430-4979
mbarth@tradeOES.com

David A. Kaminer
The Kaminer Group
(914) 684-1934
dkaminer@kamgrp.com

For CBSX:
Gail Osten
(312) 786-7123
osten@cboe.com