Shorting stock index options is a means to make profits by shorting in the stock index futures market. Because the futures market is margin trading, correct shorting can also make a profit. For example, if I have 6,543,800 yuan, I can short the stock index by 6,543,800 yuan. If the stock index finally falls, for example, by 30% to 7 million yuan, my profit will be 3 million yuan, that is, I only used 6,543,800 yuan.

For the futures market, the number of short positions and long positions is always the same. Neither side will have extra hands! So you can see an "open position" in the futures market. This number will increase or decrease for a period of time. Today is 10000 lots, and tomorrow it may become zero lots. If you write an empty bill, someone will write more than one bill. No one will open more than one order, and neither will your empty order. Then the daily limit will drop. In an index, "everyone is bearish" and then it falls. Until there is disagreement. For example, this morning, the main contract of stock index futures 1005, the two sides disagreed around 2380 points. Everyone can open a position. Also opened an empty list! In the afternoon, something is wrong, just like you said, "everyone is bearish." At this time, you want to sell 2350 points, and no one wants it. You have to go to 2320 or 2300 to be free. The market price went on like this. You earn what's empty in front. You earn long money. It's not like stocks. In the stock market, everyone may make money or lose money. What you earn in the futures market is long money, or a long and short bet on whether the stock market will go up or down in the future.