Futures backhand is generally similar to reverse opening. It is the case that the original position is long and then closed to short, or the original short position is now closed to long, that is, the position in hand is closed at the opponent's price and the same number of warehouse receipts in the opposite direction are opened. Futures backhand mostly occurs when the futures market is misjudged.

Stock is a certificate issued by a joint-stock company to prove the shares held by shareholders, indicating that the stock holder has ownership of part of the capital of the joint-stock company. Because stocks contain economic benefits and can be listed, circulated and transferred, stocks are also a kind of valuable securities. Shares of listed companies in China are issued in Beijing Stock Exchange, Shanghai Stock Exchange and Shenzhen Stock Exchange, and investors generally open accounts in securities brokerage companies. Opening price: the opening price is the first transaction price in the bidding stage. If there is no deal, the closing price of the previous day is the opening price. Closing price: refers to the price of the last stock in daily trading, that is, the closing price. Highest price: refers to the highest price among the trading prices of the day. Sometimes there is only one highest price, and sometimes there is more than one. Lowest price: refers to the lowest transaction price of the day. Sometimes there is only one lowest price, and sometimes there is more than one.

If the company's profits are huge and the number of shares issued after the rights issue is limited, the shareholders who buy the rights issue can get high returns. After the rights issue, the raised funds generally can't generate immediate income, the range of investors is limited and the utilization rate is not high. After the rights issue, it is generally issued under the following circumstances: when the company issues new shares to raise funds for expanding equipment, in order not to reduce the dividends to the old shares, the new shares will be issued as rights issues before the new equipment is officially put into use; When the enterprise is merged, in order to adjust the merger ratio, part of the shares are paid to the shareholders of the merged enterprise; In a company with government investment, the shares held by the government are regarded as post-distribution until the dividends of the privately held shares reach a certain level. Quote: It is the highest or lowest bid reported by traders for a security in a certain period of time in the securities market. Quotation represents the highest price that buyers and sellers are willing to pay. The buying price is the price at which the buyer is willing to buy a security, and the selling price is the price at which the seller is willing to sell. The order of quotation is customarily to quote first and then quote. In the stock exchange, there are four kinds of quotations: one is shouting, the other is gesturing, the third is filling in the declaration record form, and the fourth is inputting it into the computer display screen.