Under normal circumstances, speculative customers only make main contracts, because such contracts have large turnover and positions, good liquidity and easy opening and closing positions.

As far as the holding time is concerned, no matter whether the market goes up or down, you can hold it from the contract listing to the contract delivery month, such as CU 1203. You can buy it now and hold it until February 20 12, provided that the deposit in your account is positive!

Because futures are margin trading, the leverage effect is relatively large, and it is still unreliable to hold them for several months.