Short selling is a common operation mode in stock futures market. It is expected that the stock futures market will have a downward trend. Operators will sell their chips at the market price, and then buy them after the stock futures fall, earning the middle price difference.

Doing more is just the opposite of shorting. Investors judge that the stock market has an upward trend, buy at the current price, then hold shares until they rise, and then sell them after stocks, foreign exchange or futures rise to earn the difference in the middle. Generally speaking, they buy first and then sell.

Extended data:

Precautions:

1. Stop loss is an important protection for trading accounts. Because the trend of the crude oil market is infinite, and people's understanding often has certain limitations, it is not enough to deal with the crude oil market only by thinking.

2. Crude oil investment is a high-return investment variety, and there are naturally many risks in the transaction. Investors must consider the possibility of investment risk before trading, and the position setting should be reasonable and not too large.

3. Every transaction tries to grasp the highest and lowest points of the market in an attempt to get the maximum profit, which is the behavioral motivation of ultra-low bottom. However, in crude oil trading, the market trend is unpredictable, and there may be huge fluctuations in the short term. So the highest and lowest points are quite difficult to grasp every time. Investors should not be paranoid about this and ignore the big market trend of crude oil.

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