Inversion: stock market term. The stock price moves in the opposite direction to the original trend, which is divided into upward reversal and downward reversal. Refers to the stock price from long market to short market, or from short market to long market. Generally speaking, it is from bull market to bear market, or from bear market to bull market. From the perspective of individual stocks, from the downward trend to the upward trend, investors should actively participate, and the stock shape is optimistic. From the upward trend to the downward trend, investors should go out or stay away from the stock as soon as possible.

Long position means that investors are optimistic about the stock market and expect the stock price to be bullish, so they buy the stock at a low price and sell it when the stock rises to a certain price to obtain the difference income.

Short position: Although the stock price is relatively high at present, investors are not optimistic about the stock market prospect and expect the stock price to fall, so they sell the stock at a relatively high price and buy it when the stock falls to a certain price to obtain the difference income.