Nodal Exchange

Houston Street Exchange was an early electronic over-the-counter (OTC) energy trading platform based in Houston, Texas, offering spot and forward contracts for crude oil and refined petroleum distillates. Launched in the late 1990s during the initial wave of online energy trading, the platform ceased operations in the early 2000s following the collapse of energy trading markets in the wake of the Enron scandal.

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.

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.

Amercanex is a US-based cannabis commodity exchange headquartered in Denver, Colorado, designed to facilitate transparent wholesale trading of legal cannabis products between licensed growers, processors, and dispensaries. As one of the world's first regulated cannabis commodity exchanges, Amercanex aims to standardise pricing and improve supply-chain efficiency across state-legal cannabis markets.