2. Definition of short selling: Short selling, also known as short selling (in Hong Kong terms) and short selling (in Singapore and Malaysia terms) is an investment term of stocks and futures, and it is a mode of operation 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. Its trading behavior is characterized by selling first and then buying. In fact, it is a bit like the credit transaction model in business. This model can profit in the wave band of falling prices, that is, borrowing goods at a high level and selling them, and then buying and returning them after falling.
3. Trading open index fund, also known as exchange traded fund (ETF), is an open fund with variable fund shares listed on the exchange.
According to the different investment methods, ETFs can be divided into index funds and active management funds, and most of the ETFs abroad are index funds. At present, ETFs launched in China are also index funds. ETF index fund represents the ownership of a basket of stocks, which refers to the index fund traded on the stock exchange like stocks. The trend of its transaction price and fund share net value is basically consistent with the tracking index. Therefore, investors buying and selling an ETF is equivalent to buying and selling the index it tracks, and can get basically the same income as the index. Usually, it adopts a completely passive management mode, aiming at fitting an index, which has the characteristics of both stocks and index funds.