Principle: shorting is just the opposite of going long. To do more is to buy at a low price and sell when it rises. And shorting means selling at a high price and buying at a low price. Theoretically, it is to borrow goods and sell them first, and then buy them back. Short selling refers to selling stocks at the current price in the expectation of future market decline, and buying them after the market decline to obtain the difference profit. Its trading behavior is characterized by selling first and then buying. In fact, it is a bit like the credit transaction model in business. This model can profit in the wave band of falling prices, that is, borrowing goods at a high level and selling them, and then buying and returning them after falling. For example, a stock is expected to fall in the future, borrowed and sold when the current price is high (the actual transaction is to buy a put contract), then bought when the stock price falls to a certain extent and returned to the seller at the current price. The difference is the profit.
For example, I have a stock of 1000, and I am bearish on the market outlook. At this time, the stock is just at a high level. For example, the price at that time was 10 yuan, and I filled in the current price, and then the market went down wave after wave. At the close, the stock price was 9.20 yuan, and I bought it successfully (today's net profit is close to that of 800 yuan). If the stock price opens 9.50 yuan higher the next day, I will (make a net profit of nearly 700 the next day) and short. ?