2. In some cases, futures can be operated according to the value of commodities, for example, when the price of futures contracts deviates far from the spot price. But in a mature commodity futures market, the price of futures contracts will not deviate too much from the spot price.
3. Futures contracts have a delivery period, and because of the leverage of margin, it is impossible to hold contracts for a long time like stocks. Even institutional investors such as investment funds hold futures contracts for more than three or four months, which is very rare.