Air exchange, futures term, means air exchange, which is more standardized.

The so-called change of hands is the transfer of orders (futures contracts) in the same direction, which are divided into long positions and short positions according to their nature.

Empty bill exchange: if the original order is to be closed, it must be repurchased and then sold by another person. If you open a position, the market position at this time has not changed, but the selling order has been transferred from your own hands to others. This is called empty exchange. To put it simply, short positions change hands: the original short positions are bought and closed, and the new short positions are sold and closed, and the positions remain unchanged.

What are the advantages of futures?

1. Strong liquidity and high yield. Stocks are relatively liquid, and investors can buy and sell them at any time. With the increase of liquidity, the income level has improved.

2. It can reduce the loss. Generally speaking, the return of stocks is not fixed; It changes with the company's income. When inflation occurs, the company's income growth rate will be greater than the inflation rate. Shareholders' dividends can offset inflation losses.

3. Can control the joint-stock company. Investors are shareholders of the company and have the right to participate in related activities of the company. When investors own a large number of shares, they have the right to control the company.