2 cmx gold stock refers to the gold stock available for physical delivery in the New York Mercantile Exchange.
Under normal circumstances, after gold producers produce gold, they need to hang it on the futures market, which will increase the inventory. For the manufacturer, he sells a gold futures, not a short position; If someone buys this contract, the buyer is a bull. Because there is a contract delivery period in futures, bulls can choose physical delivery after the expiration, and the inventory will be reduced.
Gold producers increase gold supply, gold stocks increase, and traders reduce gold stocks after physical delivery.