Back to Basics: Index Funds
There's a game on Wall Street that's been running for decades.
Fund managers charge you money to pick stocks. They promise to beat the market. To find the winners before everyone else does. To justify their fees with superior returns.
Most of them lose.
Year after year, the majority of actively managed funds underperform a simple benchmark: the S&P 500. Not because the managers are stupid. They're often brilliant. But the market is brutally efficient. By the time you've spotted a winner, so has everyone else. The edge disappears.
The Data Is Brutal
S&P Dow Jones Indices publishes a report called SPIVA (S&P Indices Versus Active). It's been tracking active managers against their benchmarks for over two decades.
The 2024 scorecard: 65% of large-cap U.S. equity funds underperformed the S&P 500. That's worse than the 60% in 2023.
But the long-term numbers are more damning. Over the 15-year period ending December 2024, there were no categories in which the majority of active managers outperformed their benchmark.
Zero.
And here's what makes it almost impossible to pick the winners in advance: not a single one of the top-quartile large-cap funds from 2020 remained in the top quartile by 2024. Performance doesn't persist. The fund that crushed it last year is no more likely to crush it next year than any other fund.
The Bogle Revolution
In 1976, a man named Jack Bogle had a radical idea. What if you stopped trying to beat the market and just bought the whole thing?
He created the first index fund. Instead of paying someone to pick stocks, you own a slice of every company in an index. The S&P 500. The total U.S. stock market. The entire world.
No guessing. No genius required. Just participation.
Index funds win by not trying to win. They keep costs low. They stay diversified. They let compound interest do the work.
When Active Wins (Sometimes)
Fairness requires noting that 2024 was actually a good year for some active managers.
Small-cap funds saw record outperformance, with 70% beating their benchmark. Active bond fund managers did well too, especially in investment-grade and municipal bonds.
But zoom out and the pattern holds. Short-term wins don't compound into long-term advantages. The SPIVA persistence data shows that winners rotate randomly.
This doesn't mean picking stocks is always wrong. Some people enjoy it. Some get lucky. But for most people, most of the time, the boring strategy is the best strategy.
Stop trying to find the needle. Buy the haystack.
This is the second post in our Back to Basics series, where we break down essential financial concepts in plain language. No jargon, no prerequisites. Just the stuff that actually matters.
Back to Basics Series
Coming up: emergency funds, dollar-cost averaging, tax-advantaged accounts, and more.
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