Mutual funds are investment vehicles that pool money from multiple investors and invest the money in a portfolio of stocks, bonds, or other securities. Each investor owns a portion of the fund, represented by units or shares. The fund is managed by a professional fund manager, who uses the pooled money to buy and sell securities with the aim of achieving the fund's investment objective.

Mutual funds are popular investment options for retail investors, as they offer a convenient way to invest in a diversified portfolio of securities without requiring significant knowledge of the market or individual stocks. They are available in a range of investment styles and asset classes, including equity funds, debt funds, balanced funds, index funds, and more.

Investors typically buy and sell mutual fund units through a mutual fund distributor or online platform, and the price of the units is based on the net asset value (NAV) of the fund, which is calculated as the total value of the fund's assets minus its liabilities divided by the number of units outstanding.

Mutual funds offer several advantages, such as diversification, professional management, liquidity, and ease of investment. However, they also carry risks, including market risk, credit risk, interest rate risk, and more. Before investing in mutual funds, it is important to understand the fund's investment objective, investment strategy, fees and expenses, and risk factors, among other things.