15 times. Financial derivatives refer to financial contracts whose term value depends on one or more basic assets or indexes. Contract types include forward, futures, swaps and options. Financial derivatives trading generally has leverage effect, and the leverage of commodity futures trading in China is generally 5 to 15 times. Take rebar as an example. You originally needed 4,000 yuan to buy 10 ton, but in the futures market, you can hold the multi-investment futures contract of 10 ton rebar only by paying the 400 yuan deposit.