Retail investors (also known as retail investors, individual investors or small investors) refer to investors who buy and sell in financial markets (such as stock market, bond market and futures market) with a small number and low trading frequency. Retail investors usually don't have enough funds, information resources and trading experience to influence the market trend. They usually make investment decisions according to their own judgments and needs, rather than having a professional research and analysis team like institutional investors.

Retail investors play an important role in the financial market, and their trading behavior usually affects market liquidity and price fluctuation. However, because retail investors usually lack professional investment knowledge and skills, they may face greater risks in the investment process. Therefore, it is very important for retail investors to understand market dynamics, learn investment knowledge and skills, and maintain a cautious investment attitude.