A: 1. According to its organizational form, it is divided into institutional investors and individual investors.

Institutional investors are divided into government institutional investors, financial institutional investors, enterprise institutional investors and qualified foreign investors.

Institutional investors in China are divided into funds, insurance companies, securities institutions, corporate entities and foreign capital.

Funds: investment funds, social security funds and private equity funds. Legal person: listed companies and unlisted companies.

2. Impact:

(1) Institutional investors have the function of stabilizing the market:

Institutional investors generally invest in portfolio, and their contrarian stock selection behavior is conducive to the stability of the stock market, buying stocks that have fallen sharply and selling stocks that have risen rapidly, which in itself can correct the abnormal fluctuations of the stock market;

Because of the large scale of funds, institutional investors can build a sufficiently dispersed portfolio. Once the portfolio is built, it is generally not easy to adjust. This strategy is obviously beneficial to the stability of the stock market.

(2) It plays a role in improving the governance structure of listed companies, enhancing the integrity and transparency of the securities market, improving the level of market liquidity and guiding the concept of long-term investment.

That's all I know, I hope I can help you!