what are the three legal persons? The three legal persons often heard in the stock market refer to foreign capital, investment trust and self-employed. Foreign capital: QFII (short for qualified foreign institutional investors) allows approved qualified foreign institutional investors to remit a certain amount of foreign exchange funds under the supervision of the central bank and convert them into Taiwan dollars, and invest in the local securities market traded in Taiwan dollars through a strictly supervised special account. After the central bank has examined and approved, the principal, capital gains, dividends and interest can be converted into foreign exchange and remitted abroad. Investment trust: Securities investment trust companies and securities investment consulting companies are mainly professional institutions that raise funds from all people and are effectively invested by professional managers. The amount raised here is also called * * * mutual fund, which is a kind of investment and financial management tool. Investment is entrusted by investors to provide advice and analysis on securities investment matters. Self-dealers: Securities self-dealers, securities underwriters and securities brokers refer to those who buy and sell stocks and government bonds of listed and OTC companies on their own, are responsible for their own profits and losses, and do not accept business entrusted by customers. Securities underwriters assist companies in listing and listing, and sell or underwrite listed stocks when the company publicly issues or increases capital. Securities brokers are commonly known as prison houses, whose main business is to buy and sell securities entrusted by customers, and they are not allowed to buy and sell stocks on their own.