'Commodity Exchange (COMEX)' is explained in detail and with examples in the Trading edition of the Herold Financial Dictionary, which you can get from Amazon in Ebook or Paperback edition.
The COMEX Commodity Exchange is the wholly owned subsidiary of the Chicago Mercantile Group that is responsible for both precious metals and base metals futures and options on futures trading. This once independent exchange is where the speculators, hedging companies, and traders all come to participate in trading FTSE 100 London exchange index options, along with precious metals silver and gold futures and options on futures, and industrial metals futures such as copper, aluminum, lead, and zinc futures.
For the first more than half a century of its existence, the Commodity Exchange proved to be an individually owned and run commodities futures exchange. COMEX arose in New York back in 1933 in the depths of the Great Depression. Through ups and downs in the markets, this exchange endured.
On December 31st of 1974, the Commodity Exchange launched its gold futures contract. This was the date when Americans regained the right to own gold again after a more than 40 year hiatus. This made it the biggest and most important center around the globe for gold futures and options. COMEX next launched options trading based on their gold futures in 1982 to cement their place in the world futures market and history. Silver has also been traded on the exchange since the 1970s.
COMEX merged with rival exchange NYMEX in 1994 to form the two still separately run exchanges under the listing of NYMEX Holdings, Inc. They did not obtain their publicly traded listing on the New York Stock Exchange until November 17th of 2006 when it began to trade under the ticker symbol of NMX. This new entity did not maintain its independence for long.
By March of 2008 the Chicago Mercantile Exchange Group of Chicago had conclusively committed to an agreement to purchase all of NYMEX holdings at a combined stock and cash offering that totaled $11.2 billion. The deal successfully completed in August of 2008.
From this point forward, the once independent and then jointly held NYMEX and COMEX exchanges continued their existence as Designated Contract Markets of the CME Group. As such, they joined the two sister exchanges of the organization, the Chicago Mercantile Exchange and the Chicago Board of Trade. All four of these exchanges together make up the DCMs of the CME Group.
COMEX still maintains its separate identity under the CME Group. The precious metals trade is what it is best known for today. This precious metals complex volume that it transacts both monthly and annually is so large that it is greater than the volume of all competing futures exchanges in the world combined.
Commodities Exchange brings in participation from around the globe. A substantial number of the traders from East Asia, Europe, and the Middle East remain at their offices until the daily closure of COMEX.
This fact provides the Commodities Exchange with unparalleled liquidity almost around the clock. This more or less explains why it has been so very successful for the past near century despite intense competition in a constantly changing global trading environment. The hours that it trades continue to reflect the global participation. This is why the Commodities Exchange has opened ever earlier in order to meet the needs of the Asian, Middle Eastern, and European overseas trading clientele base.
Electronic trading on COMEX starts from the night previously from 4pm until the following morning at 7am. The regular trading session occurs from 8:20am through to 2:30pm. This means that COMEX is open for 21 hours per trading day from Monday to Thursday. Sunday electronic hours begin from 7pm EST. The group publishes both exchange open interest and volume every trading day.