Large-scale funds want to buy stocks, because of the large amount of funds, they can't buy them at the lowest point. Because it buys a lot of stocks, it can only raise the price to buy enough stocks. When he sells stocks, he can't sell them to the highest point. Because he sells a lot of stocks, he can only sell enough stocks by lowering the price. Due to the large scale and large amount of funds, the position exchange is not so fast, and it will be lost when the stock market style changes. Therefore, you can't choose tens of billions of funds. Choose a good fund with medium or below scale.