1. An investor buys100t soybean call option at a premium of 18 yuan/ton, and the exercise price is 1020 yuan/ton: when the market price is 1060 yuan, his profit and loss are: (1ton.

2. Sell 200 tons of soybean call options with an exercise price of 1040 yuan/ton at a premium of 12 yuan/ton;

When the market price is 1060 yuan, he is losing money:12 * 200-(1060-1040) * 200 =-1600.

3. Colleagues buy 100 ton soybean call option at a premium of 100 yuan/ton, and the exercise price is 1060 yuan/ton.

When the market price is 1060 yuan, what he loses is royalties:10 *100 =1000 yuan.

So he lost 1000+ 1600=2600 yuan.

The profit is: 2200 yuan

Generally speaking, 2600-2200=400, resulting in a loss of 400 yuan.