profit-taking, also called technical correction, also called technical adjustment, refers to a trading behavior in which the holders of stocks, futures contracts and options contracts change their positions on their own initiative after the market value changes and a favorable price appears, so that the book profit can be converted into actual profit.

profit-taking often occurs in the period when the market is reversed. Generally speaking, when the market turns from a bull market to a bear market, it is often profit-taking by many parties; When the market turns from a bear market to a bull market, it is often the empty side that takes profits. The profit-taking behavior in the futures market is often related to the fact that investors are not sure about the market prospect, so they hope to take back the face profit or floating profit they have earned and turn it into actual income.