NYSE Euronext, which operates the New York Stock Exchange and other trading venues, on Monday said it completed its acquisition of trading technology provider NYFIX Inc.

The $144-million all cash deal, announced in August, valued NYFIX stock at $1.675 per common share.

Most of NYFIX’s business units will be folded into NYSE Technologies. The combination now provides a link between more than 450 buy-side institutions and more than 600 sell-side institutions, and connections to exchanges and electronic trading about the world.

NYFIX Euro Millennium operations will shut down, with the goal of shifting customers to SmartPool, a London-based multilateral trading facility created by NYSE Euronext in partnership with JPMorgan, HSBC and BNP Paribas.

In morning trading, NYSE Euronext shares slipped 4 cents to $25.20.