The so-called "hat-grabbing" transaction refers to the behavior of securities companies, securities consulting institutions, professional intermediaries and their staff who buy, sell or hold relevant securities and make public comments, forecasts or investment suggestions on the securities or their issuers and listed companies in order to obtain economic benefits through expected market fluctuations. Stealing hats is a high-risk stock operation. You'd better not try it easily unless you have experience.

Hat grabbing is a kind of speculation in the futures market. In the futures market, speculators buy futures contracts whose prices are expected to rise at a low level on the same day to open positions, and then when the futures price rises to a certain price, they sell the futures contracts they bought on the same day to close positions, so as to obtain the profit of the price difference. Or, open a position on the same day to sell the futures contract that is expected to fall, and then buy and sell the futures contract at a low price to close the position when the futures price falls to a certain price, so as to obtain the difference profit.

In the early days of securities and futures trading, traders bid in the trading pool and quote by gestures and shouts, so those traders who speculate on short-term in the day will raise their hands to quote constantly, just like a group of people reaching out to take off their hats, so they call the technique of short-term trading in the day "grabbing hats".

Because the purpose of grabbing a hat is to earn the difference profit of the stock on the same day, it is generally the best time to grab a hat when the stock market is in a violent shock stage and the stock price fluctuates greatly within a day.