A stock exchange is a legal person that provides premises and facilities for the centralized trading of securities, organizes and supervises the trading of securities, and exercises self-regulation.

A bond is a financial contract, a debt instrument issued to investors by governments, financial institutions, industrial and commercial enterprises, etc. to raise funds by borrowing directly from society, while promising to pay interest at a certain rate and repay the principal on agreed terms.

The appreciation of the dollar has resolved a number of economic difficulties for non-US countries.

Shares are part of the ownership of a company's property and the holder of the shares is the shareholder.

Paper money has been used in the United States since before the Declaration of Independence.

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A bond is a debt instrument that the government, financial institutions, industrial and commercial enterprises, etc.

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In the United States, money market funds can be divided into three categories according to the level of risk. 　　 In the United States, money market funds can be divided into three categories according to the level of risk. 　　 1, Treasury bill money market funds, which invest mainly in treasury bills, marketable securities guaranteed by the government, etc. These securities generally have a maturity of less than one year, with an average maturity of 120 days. 　　 2,Diversified money market funds, which are commonly referred to as money market funds, usually invest in a variety of marketable securities such as commercial paper, treasury bills, securities issued by U.S. government agencies, negotiable certificates of deposit, bankers' acceptances, etc., which have similar maturities as the aforementioned funds. 　　 3, Tax-exempt money funds, which are used primarily for short-term financing of high-quality municipal securities, also include municipal medium-term bonds and municipal long-ter

The Dow Jones Index is the oldest, most influential and most widely used stock index in the world.