MILLENNIUM ATS AVAILABLE TO LAVA TRADING WORKSTATION USERS.

YFIX, Incorporated's (NASDAQ: NYFX) Millennium ATS, which currently handles an average of 9 million listed shares per day, has become available to users of Lava Trading's high-performance front-end trader workstation, Lava Trading Floor and its consolidated order entry, quote update and market data interface, Lava ColorBook.

"Since the launch of Millennium approximately a year ago, we've been consistently growing volumes and liquidity," said Bob Gasser, president and CEO of NYFIX Millennium and NYFIX Transaction Services, Inc. "We are pleased to integrate Millennium functionality into Lava ColorBook. The convergence of Nasdaq Market Making and Block Trading represents a profound change for the securities industry. Our relationship with Lava provides our clients with a powerful tool to re-engineer the trading of listed equity securities."

"NYFIX Millennium offers another significant source of liquidity for Lava's customers, as well as a highly efficient price and liquidity improvement facility," said Richard Korhammer, co-founder and CEO of Lava Trading. "Lava is recognized for its proven electronic trading product suite, including Lava Trading Floor and Lava ColorBook, that address our customers' needs with speed, reliability and intelligent trading strategies."

NYFIX Millennium leverages the NYFIX network's large order routing share volume to provide a more efficient liquidity source for the financial community. Users of the system contribute a pool of liquidity by passing their DOT and institutional block volume through Millennium on its way to the floor of the NYSE. This pass-through volume is allowed to interact with resting orders that can improve the price reflected on the NYSE by at least $0.01. If Millennium cannot improve price, the order is immediately sent on to its original destination for execution.

Lava Trading develops high-performance software for equity traders, and is a leader in providing market data distribution, trading technology, and Electronic Communication Networks (ECN) and exchange connectivity for Nasdaq market makers, broker dealers, and large institutional investors. The company's Lava Trading Floor is a cutting-edge front-end trading system used by more than 60 trading firms. The Lava Trading Floor system provides traders with consolidated order information in a unified market data montage, order entry across all available execution services, design tools for smart placement features, and real-time monitoring and management of orders, positions, and P&L. Using Lava Trading Floor and Lava ColorBook, Lava's customers currently execute over 250 million shares a day, or approximately 20 percent of Nasdaq's average daily volume via Lava's datacenters.

About Lava Trading Inc.

Lava Trading Inc. is a technology company that develops high-performance software for the trading floor, and operates that software and data centers as a Specialized Applications Service Provider (SASP) for its clients. Lava Trading's clients include eight of the ten largest U.S. investment banks. The company is located in New York City and is privately held. Lava's investors include Internet Finance Partners (IFP), LaBranche & Co. Inc., and TA Associates.

NYFIX, Inc. (NASDAQ: NYFX), through its subsidiaries, provides electronic trading systems, industry-wide trade routing connectivity, straight-through processing and execution services and systems to the global equities and derivatives financial markets.

NYFIX USA, L.L.C. develops real-time order management trader workstations, exchange automation systems, trade order and execution routing and STP solutions for brokerage firms and other financial institutions. NYFIX USA operates the NYFIX Network, the industry's largest FIX order-routing network, processing between 500 million to 1.2 billion shares of U.S. listed equity securities on a daily basis. NYFIX USA is a pioneer in the adoption of the FIX protocol and all its products are FIX-compliant.

NYFIX Transaction Services, Inc., a broker/dealer subsidiary of NYFIX and NASD member, provides execution and smart order routing solutions primarily to domestic and international broker-dealers and specialized trading firms.

NYFIX Millennium, L.L.C., an 80% owned broker-dealer subsidiary of NYFIX, Inc., is an Alternative Trading System, which provides a real-time, anonymous automated matching system for equity trading. NYFIX Millennium leverages the NYFIX network's large order routing share volume to provide a more efficient liquidity source for the financial community. Investors in NYFIX Millennium, L.L.C. include NYFIX, Inc., ABN Amro, Banc of America Securities, Deutsche Bank, JP Morgan, Lehman Brothers, Morgan Stanley, Sanford C. Bernstein & Co., SG Cowen Securities Corp., UBS Warburg and Wachovia Securities.

NYFIX Overseas, Inc. specializes in electronic trading solutions for the derivatives markets and develops order management workstations and exchange interface systems, supporting trading on more than 20 of the world's leading international derivatives exchanges. NYFIX Overseas has customers in Europe, the U.S. and the Far East.

Javelin Technologies, Inc. is a supplier of electronic trade communication technology and a leading provider of Financial Information Exchange (FIX) technology. Javelin solutions provide better trading through universal connectivity, streamlining of workflow and elimination of the high costs and risks associated with the development of proprietary network links and protocol implementations. Javelin's electronic trading solutions power hundreds of clients including Chicago Board Options Exchange (CBOE), Morgan Stanley Dean Witter, Barclays Global Investors, the American Stock Exchange, Instinet, and Yahoo!

Renaissance Trading Technologies, LLC, offers a trader workstation for the Nasdaq market, enabling principal and agency traders to electronically receive orders from multiple sources, execute orders according to best execution principles, route orders to ECN or ATS destinations and manage risk. The Renaissance Trader Workstation provides configurability and the flexibility to suit most firm's trading strategy. Renaissance's enforcement of held order-handling rules and best execution facilitation of customer orders helps trading desks focus on trading.

For more information, call 917/320-4690.