Investment Types

Mutual Fund: Definition

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Simple Definition

Money pooled from many investors to buy a collection of stocks or bonds.

Why It Matters

Mutual funds were the original way to get instant diversification - they've been around since 1924. Today, they manage over $20 trillion. The catch: many mutual funds charge 1%+ fees yearly and most underperform simple index funds. Still, they're the only option in many 401(k) plans, so understanding them matters.

Key Points

  • Unlike ETFs, mutual funds only trade once per day after markets close
  • Actively managed funds have a manager picking stocks; index mutual funds just track an index
  • Expense ratio matters: 1% fee vs 0.03% fee costs you $170,000+ over 30 years on a $100k investment

Related Terms

Common Questions

Money pooled from many investors to buy a collection of stocks or bonds. Mutual funds were the original way to get instant diversification - they've been around since 1924. Today, they manage over $20 trillion.

Mutual funds were the original way to get instant diversification - they've been around since 1924. Today, they manage over $20 trillion. The catch: many mutual funds charge 1%+ fees yearly and most underperform simple index funds. Still, they're the only option in many 401(k) plans, so understanding them matters.

Unlike ETFs, mutual funds only trade once per day after markets close

Actively managed funds have a manager picking stocks; index mutual funds just track an index

Expense ratio matters: 1% fee vs 0.03% fee costs you $170,000+ over 30 years on a $100k investment