Definition
Index investing involves buying funds that track a market index like the S&P 500, aiming to match market performance rather than beat it. This passive approach is based on efficient market theory and evidence that most active managers underperform after fees. Index funds offer broad diversification, low costs (expense ratios often under 0.10%), tax efficiency, and simplicity. The strategy has gained enormous popularity, with trillions flowing into index funds. Critics argue excessive indexing could reduce price discovery.
Example
Instead of picking individual stocks, an investor puts their entire equity allocation in an S&P 500 index fund with 0.03% expense ratio. They accept market returns but avoid the risk of underperforming and save significantly on fees.
FAQ
What is Index Investing?
A passive strategy replicating the performance of a market index.
Why is Index Investing important?
Index Investing helps investors evaluate investment strategies and make more informed decisions.
Related Terms
Passive Investing
Investment strategy that tracks a market index rather than trying to beat it.
Exchange-Traded Fund (ETF)
An investment fund traded on stock exchanges that holds a basket of assets.
Expense Ratio
The annual fee charged by a fund expressed as a percentage of assets.
Active Management
Investment approach where managers select securities to beat a benchmark.