The New York Mercantile Exchange (NYMEX) is the world's largest physical commodity futures exchange, located in New York City. Its two principal divisions are the New York Mercantile Exchange and Commodity Exchange, Inc (COMEX) which were once separate but are now merged. The parent company of the New York Mercantile Exchange, Inc., NYMEX Holdings, Inc. became listed on the New York Stock Exchange on November 17, 2006, under the ticker symbol NMX. The New York Mercantile Exchange handles billio… (More on Nymex)