Institutional investor

An institutional investor is a large organization—like a pension fund, mutual fund, insurance company, or university endowment—that invests money on behalf of its members or clients rather than for itself. You'll encounter their names in SEC filings (official documents companies file with regulators) because they often own big chunks of public companies. They matter because their buying and selling can move stock prices, and their investment choices signal confidence in a company. For example, if a major pension fund buys 5% of TechCorp's shares, it suggests professional money managers believe the company is worth owning—which retail investors like you might find interesting to know about.