Chicago Mercantile Exchange

Flett Exchange was a New Jersey-based electronic exchange for environmental commodity credits, established around 2004. Flett specialised in US environmental market instruments including NOx (nitrogen oxide) allowances under the EPA SIP Call, SO2 (sulphur dioxide) allowances under the Acid Rain Program, Regional Greenhouse Gas Initiative (RGGI) carbon allowances, and Renewable Energy Certificates (RECs). The exchange served power generators, utilities, and compliance buyers navigating the complex US state and federal cap-and-trade regulatory frameworks for air emissions.

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.

MATba Rofex is Argentina's leading derivatives exchange, formed in 2019 through the merger of the Buenos Aires Cereals Market (MATba, founded 1907) and the Rosario Futures Exchange (Rofex, founded 1909). As Argentina's primary exchange for agricultural commodity futures, it trades soybeans, corn, wheat, sunflower seed, and soybean products alongside financial futures including US dollar, sovereign bonds, and equity index contracts. MATba Rofex is critical for Argentine agribusiness hedging, as Argentina is one of the world's top soybean exporters.

Nadex (North American Derivatives Exchange) is a CFTC-regulated exchange specialising in binary options and knock-outs contracts for US retail traders. Originally founded as HedgeStreet in 2004 and acquired by UK-listed IG Group in 2007, it was rebranded as Nadex in 2009. Nadex offers short-term binary option and spread contracts on forex pairs, equity indices, commodity markets (crude oil, gold, natural gas), and economic events. It serves as a retail-accessible venue for limited-risk derivatives trading.