In the early days of securities and futures trading, traders bid in the trading pool and bid by gestures and shouting, so those traders who speculate in the day will raise their hands constantly to bid, just like a group of people reaching out to take off their hats (of course, there are no hats in the air, even if there are, no one will rob them), so they call intraday short-term trading "hat grabbing".

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 positions on the same day to sell futures contracts that are expected to fall, and then when futures prices fall to a certain price, buy futures contracts that are sold at low prices and close their positions, so as to obtain the difference profit.

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. When investors grab the hat, they need to have in-depth research on the stock market and make a very agile response when the market changes.

Stealing hats is a high-risk stock operation. You'd better not try it easily unless you have experience.