Analysis challenges the Buffett legend, saying Berkshire’s stock trailed the market over the last 24 years

Berkshire Hathaway has long been held up as a case study in patient value investing, with Warren Buffett’s track record used by generations of investors as proof that disciplined stock picking can beat the market. But a fresh analysis that surfaced in market commentary is testing that assumption by claiming Buffett’s Berkshire investment record fell short of the S&P 500 over roughly the last 24 years.

The claim, as described in a report carried by 247wallst (and attributed to material discussed on the Rational Reminder Podcast), centers on Berkshire Hathaway’s equity returns relative to a broad benchmark during Buffett’s more recent period of control. The article frames the conclusion as uncomfortable, suggesting that the famous narrative of consistent outperformance may not hold when the time window is narrowed to the last 24 years.

Rather than disputing Berkshire’s enduring reputation, the reporting points to an interpretation from the podcast: that a single crucial investing error may have crushed Berkshire’s returns during that stretch. However, the excerpted information available here does not specify the nature of the alleged “mistake” or the exact methodology used to reach the comparison.

The same report nonetheless uses the underperformance framing to push a broader point about how investors should interpret long-term performance. Even when a strategy appears successful over multi-decade horizons, it may still lag a benchmark when measured over particular periods or when the comparison is adjusted for factors like timing, selection of benchmark, and compounding effects across individual holdings.

Berkshire’s performance is especially important to investors because the company is unusual in how it combines public-stock ownership with wholly owned operating businesses. Returns can therefore reflect not only changes in the market value of Berkshire’s major stock holdings, but also the underlying cash generation and reinvestment decisions across its operating units, plus how much capital is kept in cash and equivalents. That complexity can make benchmarking and attribution challenging, particularly for shorter windows.

At the same time, the report’s emphasis on “one crucial mistake” underscores the risk of oversimplifying performance drivers in retrospective analysis. Berkshire’s shareholder returns are shaped by many moving parts, including portfolio turnover decisions, the timing of major purchases and sales, and the macro environment for the kinds of companies Berkshire tends to buy.

What remains unclear from the information available in this package is the specific analytical steps behind the underperformance conclusion. The report does not provide the exact return figures, the precise dates marking the start and end of the 24-year window, or whether the comparison uses total return (including dividends) for both Berkshire and the benchmark, which can materially change results.

For investors and analysts, the practical question going forward is whether the podcast-based interpretation will be supported by independently verifiable return calculations. The next step would be to check the underlying numbers, the benchmarking choices, and the identification of the alleged “mistake,” then compare those inputs to Berkshire’s own published disclosures and to standard market data series for the same periods.