LaBranche

( LAB) said today that it completed the acquisition of

Internet Trading Technologies

for an undisclosed amount.

Internet Trading Technologies provides outsourced Internet trading software to the wholesale securities market. The company will operate as a unit of LaBranche, a

New York Stock Exchange

specialist firm.

Shares of LaBranche gained 80 cents, or 2.1%, to $38.66 in recent Big Board trading.