NYFIX Euro Millennium™ Volumes Increase Over 500% in December; New Single Day Records Continue into January

NYFIX, Inc. (Nasdaq: NYFX), a leading provider of innovative solutions that optimize trading efficiency, announced today that the total number and value of all shares matched in its Euro Millennium™ dark pool crossing network during the month of December 2008 was 251.0 million shares representing over €1 billion of value, an increase of over 500% compared to November 2008.

With a December average of over 2 billion shares of liquidity available on a daily basis, two records were set on December 17^th, when 50.7 million shares and over €150 million of value were matched. New single-day records continue to be set in January 2009, with a new record of over €200 million in value matched on January 13^th.

Chris Smith, Director, NYFIX International, said: "We are delighted with the recent increase in trading activity in the pool. Now that clients have begun resting a greater percentage of their orders in the pool, hit rates have gone up and clients are experiencing Euro Millennium’s potential for sourcing liquidity with maximum price improvement and minimal market impact. The range of securities in the pool also continues to grow with a wide range of large-, mid-, and small-cap stocks being actively traded. With Millennium as a leading dark pool in the U.S., and Euro Millennium emerging as a front-runner of dark liquidity discovery in Europe, NYFIX is well positioned to offer our clients deep and broad sources of liquidity on a global basis.”

Tim Wildenberg, Managing Director, Head of European Direct Execution at UBS added "On Euro Millennium, the first dark-only European MTF, UBS has seen and taken advantage of the recent increase in liquidity for our clients. As an early participant on Euro Millennium, UBS has both experience and comfort with the platform. Our algorithms - particularly "UBS Tap," our liquidity-seeking strategy -- are designed to effectively access Euro Millennium in combination with all other sources of liquidity."

Euro Millennium is a neutral and independent crossing network that offers real-time continuous matching at or within the best bid and offer of the primary exchange. With the flexibility of various trading execution options Euro Millennium enables firms to meet their execution objectives without concern for information leakage.

About NYFIX, Inc.

A pioneer in electronic trading solutions, NYFIX continues to transform trading through innovation. The NYFIX Marketplace™ is a global community of trading counterparties utilizing innovative services that optimize the business of trading. NYFIX Millennium® provides the NYFIX Marketplace™ with new methods of accessing liquidity. NYFIX also provides value-added informational and analytical services and powerful tools for measuring execution quality. A trusted business partner to the buy-side and sell-side alike, NYFIX enables ultra low touch, low impact market access and end-to-end transaction processing. For more information, please visit www.nyfix.com.

Caution Regarding Forward Looking Statements

This press release contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbors created thereby. Actual future events, circumstances, performance and trends could materially differ from those set forth in these statements due to various factors, including but not limited to: general economic conditions; the effects of current, pending and future legislation; regulation and regulatory actions; actions and initiatives by both current and future competitors; our ability to accommodate increased levels of trading activity and keep current with market data requirements; the risks related to the ability of NYFIX to develop and market its products and services; NYFIX’s success in obtaining, retaining and selling additional products and services to clients; the pricing of products and services; stock market activity; the ability of NYFIX’s Transaction Services Division to maintain third-party assistance to access exchanges and other important trading venues; changes in technology; the availability of skilled technical associates; the ability of NYFIX to obtain necessary network equipment, technical support or other telecommunications services or being forced to pay higher prices for such equipment, support or services; and the impact of new acquisitions and divestitures; and other risks and uncertainties including those detailed in our SEC filings; as well as future decisions by us. There can be no assurance that the forward-looking statements will prove to be accurate and the inclusion of such information should not be regarded as a representation by NYFIX or any other person that the objectives and plans of NYFIX will be achieved. In addition, the forward-looking statements included in this press release represent NYFIX’s views as of the date of this press release. NYFIX anticipates that subsequent events and developments will cause NYFIX’s views to change. However, while NYFIX may elect to update these forward-looking statements at some point in the future, NYFIX specifically disclaims any obligation to do so. These forward-looking statements should not be relied upon as representing NYFIX’s views as of any date subsequent to the date of this press release. All trademarks, trade names, logos, and service marks referenced herein belong to NYFIX, Inc.