Through mathematical statistical analysis, invest money in securities that may be profitable. Generally speaking, quantitative fund is the money used to buy quantitative fund, and it mainly adopts quantitative investment strategy to invest. Quantization, also called continuous signal sampling, refers to the process of converting continuous values of signals into discrete values by using analog-to-digital converters; According to the division of quantization level, it is divided into uniform quantization and non-uniform quantization; Ordinary funds generally do not actively pursue returns, but simply copy the trend of themes and theme indexes. The primary purpose of fund managers in investing is to reduce tracking errors; There are also some ordinary funds that actively invest in order to obtain income, but the rise and fall of funds are completely affected by the investment strategy of fund managers. Assuming that the fund manager chooses stocks alone, it is inevitable that there will be some artificial investment ideas.