Overview
Spear, Leeds & Kellogg Specialists LLC is the biggest and best-known specialist firm on the New York Stock Exchange. Focusing on securities clearing and execution, floor-based market making and off-floor market making, SLK is the largest U.S. stock and options clearing firm by volume, the largest specialist firm on the NYSE and the third largest NASDAQ market maker.
The company is a subsidiary of the Goldman Sachs Group Inc., which acquired it in 2001, and benefits from its parent's leadership in the development of sophisticated trading, execution and clearing technology.