Warren Buffett has consistently pointed everyday investors toward a low-cost S&P 500 index fund, not secret stock picks. Here's why he favors this approach, how it compares to active management, and what the numbers show about long-term results
Many Americans believe that the most successful investors have access to privileged information or complex strategies that ordinary people can't use. Yet Warren Buffett, one of the most widely followed investors in the world, has spent decades demonstrating that patience and simplicity can outperform complexity. When asked how most people should invest, Buffett's answer has remained unchanged: buy a low-cost S&P 500 index fund and hold it for the long term.
Buffett's Enduring Recommendation
Buffett has repeatedly stated in shareholder letters and public appearances that he recommends a low-cost S&P 500 index fund for the vast majority of investors. In his instructions for his own estate, he directed that 90% of the money left to his wife be invested in such a fund, with the remaining 10% in short-term U.S. government bonds. According to reporting by TheStreet, Buffett believes this simple allocation will outperform most professional managers over time, after accounting for fees and trading costs.
This advice stands out because it comes from someone who has consistently beaten the market for decades. Yet, for his own family, Buffett favors a passive approach that relies on broad market exposure and minimal costs, rather than trying to pick individual winners or time the market.
Why the Vanguard S&P 500 ETF Stands Out
The Vanguard S&P 500 ETF (VOO) is a prime example of the type of fund Buffett recommends. VOO tracks the S&P 500 index, which includes 500 of the largest publicly traded U.S. companies across all major sectors. The fund charges an annual expense ratio of just 0.03%, meaning investors pay only $3 per year for every $10,000 invested. This low fee structure is a key reason Buffett singles out Vanguard's offering when discussing index funds.
VOO's holdings automatically adjust as the S&P 500 changes, so investors benefit from the growth of leading companies like Nvidia, Microsoft, Apple, Amazon, and Alphabet, while underperforming firms are removed from the index. Over the past decade, VOO has delivered an average annual return of roughly 15%, though past performance does not guarantee future results. The fund's size-over $950 billion in assets-reflects its popularity among both individual and institutional investors.
Buy-and-Hold in Practice
Buffett's own investment record at Berkshire Hathaway illustrates the power of buying and holding quality assets. For example, Berkshire's investment in Coca-Cola began in 1988 and was completed by 1994 at a cost of $1.3 billion. By 2022, annual dividends from this position had grown to $704 million, and the stake was valued at around $30 billion. Similarly, Berkshire's American Express holdings, acquired in the 1990s for $1.3 billion, have grown to nearly $46 billion, with annual dividends rising from $41 million to $302 million. In both cases, Buffett has held these positions for decades, allowing compounding and dividend growth to do the heavy lifting.
This approach contrasts with frequent trading or attempts to time the market, which often lead to higher costs and missed opportunities. Buffett's message is that time in the market, not market timing, is what drives long-term results for most investors.
Active Management vs. Index Funds
Buffett's skepticism toward active management is supported by extensive research. According to S&P Dow Jones Indices, more than 85% of large-cap mutual funds available to U.S. investors underperformed the S&P 500 over the past 10 years after fees. Over a 15-year period, nearly 90% lagged the benchmark. In a widely publicized bet, Buffett challenged a hedge fund firm in 2007 to outperform a simple S&P 500 index fund over a decade. By 2017, the index fund had returned 125.8%, while the selected hedge funds delivered returns ranging from 2.8% to 87.7%-all trailing the index fund.
For investors building long-term portfolios, these results highlight the difficulty of consistently beating the market after costs. Index funds like VOO offer broad diversification, low fees, and automatic rebalancing, making them a practical choice for many Americans who want to participate in the growth of the U.S. economy without the burden of picking stocks or paying high management fees.
As of December 2023, the S&P 500 index posted a total return of 26.3% for the year, according to S&P Dow Jones Indices. The Vanguard S&P 500 ETF (VOO) closely tracked this performance, with an expense ratio of 0.03%. In contrast, the average actively managed large-cap mutual fund charged an expense ratio of 0.66% and underperformed the index in the same period. These figures underscore the impact of fees and the challenge active managers face in delivering better results than low-cost index funds.
Index funds are a type of mutual fund or exchange-traded fund (ETF) designed to replicate the performance of a specific market index, such as the S&P 500. Unlike actively managed funds, which rely on managers to select securities in an effort to outperform the market, index funds simply mirror the holdings of their chosen benchmark. This approach keeps costs low and reduces the risk of underperforming the market due to poor stock selection or high fees. For many investors, especially those with long time horizons and a focus on retirement savings, index funds offer a straightforward way to build wealth over time while minimizing complexity and cost.
