Securities are legal documents representing property ownership or creditor's rights, which are usually issued by issuers (such as governments, companies or financial institutions) and can be traded in the market. The following are some common types of securities:

1.** Stock * *: Stock is a kind of securities, which represents the owner's ownership and income right to the company. Stock holders (shareholders) have the right to receive the profit distribution (such as dividends) of the company and have the right to vote at the shareholders' meeting of the company.

2.** Bonds * *: Bonds are securities that represent the creditor's rights of bondholders to issuers (such as governments, companies or financial institutions). Bondholders (creditors) have the right to receive the payment of principal and interest on the specified date. The risk of bonds is low, because bondholders usually rank ahead of stock holders in the order of repaying debts.

3.** Mutual fund * *: A fund is a collective investment tool that collects the funds of many investors and is managed by a professional fund management company. Funds usually invest in stocks, bonds or other securities, providing investors with diversified portfolios and opportunities to spread risks.

4.** Derivatives * *: Derivatives are financial contracts based on the prices, interest rates or indexes of other securities (such as stocks, bonds and commodities). Derivatives mainly include futures, options and swaps. These tools can be used to hedge risks, improve investment returns or implement other investment strategies.

5.** Structured product * *: Structured product is a composite financial product, which is usually composed of a variety of basic assets (such as stocks, bonds, currencies, etc.). ) and realize a specific return mode through a certain structural design. Structured products usually have high complexity and customization.

It should be noted that investment securities may have risks, including market risk, credit risk and liquidity risk. Before investing, you should fully understand the knowledge, risks and benefits of relevant securities, and seek the advice of professional investment consultants when necessary.