Institutions in the economy that help to match one person's savings with another person's investments?

Savers by definition have an excess of funds which need to be invested to obtain a return. Borrowers (who can be individuals, small businesses, or international corporations) by definition need funds to invest in business that produce goods and services that promote economic growth and produce profits. Savers are willing to lend to borrowers in order to earn a return on their money and borrowers are willing to pay interest based on a projected rate of return on their investments.

Savers and borrowers are matched directly together through the financial markets which sell stocks and bonds and indirectly through financial intermediaries such as banks, savings and loans, and large investment companies that sell stock and bond mutual funds.

The US capital markets are the deepest in the world in terms of liquidity and efficiency in matching savers and borrowers at rates of return acceptable to both parties.