T: Simply put, it is the process of buying low and selling high or selling high and buying low in the stock market (futures and other markets) to earn the difference.
When we usually talk about doing T, we basically do T in one day, that is, T+0 does T, that is, we buy it on the same day and sell it on the same day to earn the difference in the middle.
Remarks: T is the abbreviation of the English word: Trade[.
The A-share market is a T+ 1 transaction: you buy stocks one day and sell them the next. Therefore, if you want to make a T in A-shares, you usually make a T for the stocks you hold, so that you can buy stocks on the same day and sell them on the same day (sell the stocks you held before).
The futures market is a T+0 transaction: buy on the same day, sell on the same day, and it is easier to do T arbitrage in the futures market.
Two strategies for doing t:
Positive T: Buy first and then sell, buy first at a low time-sharing point, and sell again at a high time-sharing point later (suitable for bull market). Positive T can carry out intraday arbitrage, which helps to reduce the cost of holding positions;
Anti-T: sell first, then buy, sell first at the time-sharing high point, and then buy at the time-sharing low point (suitable for bear market). This is generally to prepare to hold a stock for a long time and do anti-T, which is conducive to reducing the cost of holding positions.