A mutual fund pools money from many investors to buy a diversified portfolio of stocks, bonds, or other securities — managed by a professional fund manager. Mutual funds trade once per day at the closing NAV (net asset value). Actively managed funds aim to beat a benchmark; passive (index) funds simply track a benchmark like the S&P 500. Average expense ratio for active funds: 0.5-1%; for index funds: 0.03-0.20%. Despite paying for skill, the majority of active funds underperform their benchmark over 10+ years. For most investors, low-cost index mutual funds are the optimal choice.
Article
401(k)
A 401(k) is an employer-sponsored retirement plan where employees contribute pre-tax salary that grows tax-deferred until withdrawal. The…
Active Management
Active management is the attempt to outperform a benchmark through stock selection, sector rotation, market timing, or any…
Alpha
Alpha is excess return relative to a benchmark, adjusted for risk (beta). Positive alpha means an investment outperformed…
Asset Allocation
Asset allocation is the percentage split of your portfolio across asset classes — typically stocks, bonds, and cash,…
Backdoor Roth
The Backdoor Roth is a strategy for high earners (above the Roth IRA income limit) to contribute to…
Beta
Beta measures a stock's volatility relative to the overall market (S&P 500 = beta of 1). Stocks with…
Mutual Fund
August 22, 2026 · Aditya Gupta
Investing
Related terms
401(k)
A 401(k) is an employer-sponsored retirement plan where employees contribute pre-tax salary that grows tax-deferred until withdrawal. The…
Active Management
Active management is the attempt to outperform a benchmark through stock selection, sector rotation, market timing, or any…
Alpha
Alpha is excess return relative to a benchmark, adjusted for risk (beta). Positive alpha means an investment outperformed…
Asset Allocation
Asset allocation is the percentage split of your portfolio across asset classes — typically stocks, bonds, and cash,…
Backdoor Roth
The Backdoor Roth is a strategy for high earners (above the Roth IRA income limit) to contribute to…
Beta
Beta measures a stock's volatility relative to the overall market (S&P 500 = beta of 1). Stocks with…
