Money Market Funds are a type of mutual fund that invests in short-term, low-risk financial instruments, such as Treasury bills, commercial paper, and certificates of deposit. They aim to provide investors with a safe place to park their cash while earning a modest return, typically higher than a regular savings account. These funds are known for their liquidity, allowing investors to easily access their money. While they are not insured like bank deposits, they are generally considered a stable investment option, making them popular among conservative investors looking to preserve capital while earning some interest.