Houston Street Exchange

The Chicago Climate Exchange (CCX) was North America's first and only voluntary, legally binding greenhouse gas emission reduction and trading system. Founded in 2003 by economist Richard Sandor, CCX allowed member companies to make binding commitments to reduce carbon emissions and trade Carbon Financial Instruments (CFIs). Acquired by ICE (Intercontinental Exchange) in 2010, CCX ceased operations the same year after voluntary carbon credit prices collapsed following the failure of US cap-and-trade legislation.

HedgeStreet Exchange was a CFTC-regulated US derivatives exchange founded in 2004, offering small-denomination binary contracts (starting at $10) on economic events including crude oil prices, gold, natural gas, and macroeconomic indicators. Designed to democratise derivatives access for retail traders, HedgeStreet was one of the first exchanges to offer CFTC-regulated retail binary options on commodity prices. In 2008, the exchange was acquired and eventually rebranded as Cantor Exchange (part of Cantor Fitzgerald), which subsequently ceased operations.

The Sioux City Grain Exchange (SCGX) is a local cash grain market based in Sioux City, Iowa, serving the Northwestern Iowa and surrounding tri-state agricultural region. As a traditional open-outcry grain exchange, it historically provided price discovery and merchandising services for corn, soybeans, and wheat. The exchange represents one of the regional grain markets that predates the consolidation of US grain pricing into national futures exchanges such as CME Group's CBOT.

The Chicago Board of Trade (CBOT) is one of the world's oldest futures and options exchanges, established in 1848 in Chicago, Illinois. Originally founded to address supply and demand challenges in the grain industry, CBOT grew to offer contracts across agricultural commodities, CBOT U.S. Treasury bonds, equity indexes, and metals. CME Group merged with CBOT in 2007, making it one of four Designated Contract Markets within the CME Group family.