Experienced investors have long debated whether Berkshire Hathaway or an S&P 500 index fund represents the smarter long-term holding for a diversified portfolio.
Both the Vanguard S&P 500 ETF (VOO) and the SPDR S&P 500 ETF Trust (SPY) are widely respected for their simplicity and their tendency to outperform actively managed funds over time.
Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) is a conglomerate consisting of several dozen reliable cash-producing businesses as well as a portfolio of hand-picked stocks.
Warren Buffett brought the company to prominence, and its flexible structure has enabled shares to consistently outperform the S&P 500 since Buffett first took the helm in 1965.
The outperformance has not been guaranteed every single year, but Berkshire typically achieved the feat across five-year time frames, giving long-term investors strong reason to stay patient.
Buffett himself cautioned in 2023’s letter to Berkshire shareholders that “there remain only a handful of companies in this country capable of truly moving the needle at Berkshire,” adding that “all in all, we have no possibility of eye-popping performance.”
That admission is worth taking seriously, particularly now that Berkshire carries an enormous market value of $1.1 trillion, which limits the pool of meaningful investment opportunities available to it.
Despite those limitations, the S&P 500’s own valuation picture raises legitimate concerns, with the index’s forward-looking price-to-earnings ratio sitting well above historical norms at more than 20.
Both Vanguard and Goldman Sachs expect the S&P 500 to deliver an average annual return of between 6% and 7% over the next 10 years, well below its long-term average annual gain of roughly 10%.
That reduced return outlook means investors may be absorbing significant risk for comparatively modest rewards by concentrating their holdings in broad index funds at current valuations.
Much of the index’s elevated valuation is driven by a handful of large technology companies whose earnings growth relies heavily on the continued expansion of the artificial intelligence industry.
If that AI-driven growth encounters headwinds sooner than the market expects, the already-stretched earnings expectations embedded in index fund prices could face sharp downward revisions.
Berkshire’s wholly owned businesses, by contrast, are on pace to generate nearly $50 billion in net earnings this year alone, providing a stable and predictable cash flow base that stands apart from market sentiment swings.
That kind of consistent cash generation becomes an especially valuable attribute when broader market conditions are uncertain and forward visibility across other sectors remains limited.
For most investors seeking a long-term growth holding in the current environment, the combination of Berkshire’s cash-generating power and the index’s stretched valuations tilts the argument toward BRK.B as the more attractive option.
