A stock will go up from 10 yuan to 20 yuan, and then you can buy more. Buying down is the same as shorting. For example, if the price of a stock drops from 20 yuan to 65,438+00 yuan, then it can buy and short. Long and short are mostly used in two-way markets, such as futures market, foreign exchange market, spot gold market and spot market. These markets are bilateral. Short selling, also known as short selling, short selling (Hong Kong) and short selling (Singapore, Malaysia), is an investment term of stocks and futures, and it is also an operation mode of the stock and futures markets. In contrast to bulls, in theory, it is to borrow goods to sell first and then buy them back. Short selling refers to selling stocks at the current price in the expectation of future market decline, and buying them after the market decline to obtain the difference profit. Going long is a term used in financial markets such as stocks, foreign exchange or futures: buying and holding stocks, foreign exchange or futures, waiting for them to rise and make a profit. Long is long. When bulls judge that the market is rising, they will buy stocks immediately, so long means buying stocks, foreign exchange or futures.