Elizabeth King

SPDR S&P 500 ETF Trust is an Exchange traded fund. The fund seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the S&P 500® Index. The S&P 500® Index is composed of five hundred selected stocks. SPDR S&P 500 ETF Trust was founded on January 22, 1993 and is headquartered in New York, NY.

The Options Clearing Corp. provides equity derivatives clearing services. It provides central counterparty clearing and settlement services to stock exchanges and trading platforms for options, financial futures, security futures and securities lending transactions. The company was founded in 1973 and is headquartered in Chicago, IL.

SPDR Dow Jones Industrial Average ETF Trust is exchange traded fund. Its investment objective is to provide investment results before expenses correspond generally to the price and yield performance. The company is headquartered in New York, NY.

Knight Capital Group, Inc. is a global financial services firm, which provides access to the capital markets across multiple asset classes to a broad network of clients, including buy and sell side firms, dealers, brokers, institutions, and corporations. It operates business through four segments: Market Making, Institutional Sales and Trading, Electronic Execution Services and Corporate and Other. The Market Making segment consists of market making in global equities and listed domestic options. It includes client, and to a lesser extent, non-client electronic market making activities in which they operate as a market maker in equity securities. The Institutional Sales and Trading segment includes global equity, exchange traded funds and fixed income sales and trading; reverse mortgage origination and securitization; capital markets; and asset management activities. Its business consists of execution and facilitation equities and fixed income transactions as agent on behalf of institutional clients, and they commit capital on behalf of its clients when needed. The Electronic Execution Services segment offers access via its electronic agency-based platforms to markets and self-directed trading in equities, equity options, fixed income, foreign exchange and futures contracts. The Corporate and Other segment invests in strategic financial services-oriented opportunities, allocates, deploys and monitors all capital, and maintains corporate overhead expenses and all other income and expenses that are not attributable to the other segments. The company was founded in 1995 and is headquartered in Jersey City, NJ.

NYSE Group, Inc. operates multiple securities stock exchange. It through its subsidiaries operates multiple securities market centers, including the New York Stock Exchange (NYSE) and NYSE Arca (formerly known as the Archipelago Exchange and the Pacific Exchange). It provides securities listings, market information products and services. It offers a range of investment vehicles and order execution services. It operate as electronic platform used to trade securities and security-related financial instruments. It is headquartered in New York, NY.

Virtu GETCO LLC provides electronic trading and technology services. It provides electronic market-making and liquidity provision, involves both buying and selling securities to provide two-sided markets on exchanges. The company was founded by Stephen Schuler and Daniel Vincent Tierney in 1999 and is headquartered in Chicago, IL.

Virtu KCG Holdings LLC operates as an independent securities company, which offers services designed to address trading needs across asset classes, product types and time zones. It operates through the following segments: Market Making, Global Execution Services and Corporate and other. The company was founded on December 26, 2012 and is headquartered in New York, NY.