Thomas A. Ascher

Quadriserv, Inc. engages in the provision of securities finance activities. The company was founded by Martin Hakker, Gregory W. DePetris, Sean McNamara, and Joseph Charles Weinhoffer and is headquartered in New York, NY.

Nasdaq ISE LLC operates equity and trading options exchange. It transformed the options industry by creating efficient markets through innovative market structure and technology. It provides investors with a transparent marketplace for price and liquidity discovery on centrally cleared options products. The company was founded by David Krell in May 2000 and is headquartered in New York, NY.

Direct Edge Holdings LLC operates an electronic communication network for trading financial products. It trades all listed U.S. equities with a market share in the, the company regularly trades shares, fluctuating with the overall market volume. It operates two separate platforms, EDGA Exchange and EDGX Exchange. The EDGA Exchange is a low cost exchange with a taker and maker pricing model. The EDGX Exchange is an exchange with maker and taker pricing model offering high rebates for liquidity providers. The company was founded in 1998 and is headquartered in Jersey City, NJ.

Cboe Exchange, Inc. provides options exchange services. It trades equity options, security index options, options on exchange traded notes and products, binary options, one-week and quarterly options, long-term equity anticipation securities options, and flexible exchange options. The firm also provides information on various stock and options trading strategies, options trading tools, stock and option quotes and data; and options information and education. Additionally, they offer access to product information, conference notices, portfolio management tools, and educational materials for institutional investors and products and strategies for advisors to protect client’s portfolios. The company was founded in 1973 and is headquartered in Chicago, IL.

NQLX LLC is a company that trades futures products. The company is based in New York, NY.

International Securities Exchange Holdings, Inc. operates and regulates a registered national securities exchange. The company was founded in September 1997 and is headquartered in New York, NY.

Part of IBG Holdings LLC, Interactive Brokers LLC is a brokerage company. The company is based in Greenwich, CT. The CEO of the company is Milan Galik.

ISE Stock Exchange LLC provides an equity trading platform to support electronic trading for market participants. It offers midpoint match an automated and instantaneous platform for trading equity securities, ETFs, as well as for trading stocks listed on NYSE, Amex, and NASDAQ. The company was founded in 2006 and is headquartered in New York, NY