Peter Lynch, who managed Fidelity's Magellan Fund for 13 years and compounded returns at roughly 29% annually, argued that most individual investors should simply buy an index fund. This recommendation stands in contrast to his own track record of beating the S&P 500 in most of those years, raising the question of whether professional skill is replicable for the average market participant.
The core of the argument rests on the difficulty of identifying sustained skill and the impact of fees and behavioral errors. While Lynch's long-term performance demonstrated real ability, a manager's past outperformance is a poor predictor of future results. S&P's SPIVA scorecards indicate that most active large-cap funds trail the S&P 500 over long periods. Furthermore, probability suggests that among 1,000 fund managers with no skill, approximately 46 would beat the index in at least 10 of 13 years purely by chance.
Fees represent a controllable factor in investment returns. The Vanguard S&P 500 ETF (VOO) charges an expense ratio of 0.03%, while the SPDR S&P 500 ETF Trust (SPY) charges 0.0945%. In a hypothetical scenario where $100,000 is invested in a fund yielding 7% annually before fees over 20 years, the difference in fees produces significant disparities in final value. At VOO's fee rate, the balance grows to about $384,804. At SPY's rate, it reaches roughly $380,190. An active fund charging a 1% fee would grow the same amount to about $320,714, leaving the investor $64,091 behind the VOO holder, assuming the manager merely matched the market before fees.
Investor behavior further erodes returns. Accounts indicate that the average Magellan investor lost money despite the fund's strong performance, largely due to buying after hot streaks and selling during slumps. Adding an assumed 1.5% yearly drag from poor timing to a 1% fee reduces the $100,000 investment to about $241,171 after 20 years. This outcome trails the buy-and-hold VOO investor by roughly $143,633.
ETF analyst Eric Balchunas echoed this sentiment in an October post on X, reflecting on his own experience with stock picking. He stated that most stocks went down more than expected and that "VOO & Chill is much easier." Both VOO and SPY track the S&P 500, an index of 500 large U.S. companies weighted by market value. Recent holdings in SPY included NVIDIA at 8%, Apple at 7%, and Microsoft at 5%.
While VOO has returned about 326% over ten years and roughly 17% over the past year, past performance does not guarantee future results. For investors near retirement, the lack of bonds, cash, international stocks, or small caps in these funds poses a risk. A retiree relying solely on an S&P 500 fund may be forced to sell shares during a market crash to cover withdrawals. Maintaining a reserve of bonds or cash can allow the stock portion of a portfolio to recover without forced sales.