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How to Invest in Index Funds: A Beginner's Guide

By Matthew Frankel, CFPUpdated Feb 7, 2026 at 8:38 PM EST | Fact-checked by Frank Bass

Key Points

  • Index funds mirror market indexes, offering an easy, cost-effective investment method.
  • Choosing an index fund involves comparing expense ratios to minimize costs.
  • Index funds enable diversified long-term investment without active stock picking.

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