New york gold: American gold futures varieties, mainly referring to COMEX exchange gold futures varieties, also known as American gold trading. Take the New York Mercantile Exchange as an example, the exchange itself does not participate in futures trading, but only provides a place and facilities, and has formulated COMEX laws and regulations to ensure that both parties to the transaction conduct transactions under the premise of fairness and reasonableness. The institute has a very detailed and complicated description of the weight, fineness, shape, upper and lower limits of price fluctuation, trading date and trading time of gold traded in spot and futures. COMEX gold is one of the representative trading varieties in new york Stock Exchange.