Warren Buffett, now 95, has once again underscored his signature investing credo: simplicity, patience and concentration. In a trust directive revealed years ago, the Berkshire Hathaway founder specified that 90% of the cash his wife inherits should be put into a single, low-cost S&P 500 index fund, with the remaining 10% allocated to short-term government bonds. His exact instruction: “Put 10% of the cash in short-term government bonds and 90% in a very low-cost S&P 500 index fund.” That instruction, written into his will and described in a 2013 letter to shareholders, reflects decades of the same philosophy that made Buffett the most successful investor in modern history. From 1964 through 2025, Berkshire Hathaway delivered an astonishing cumulative gain of 6,099,294% — a track record that helped make Buffett one of the wealthiest people alive. As of 2026 his net worth stands near $140 billion, and roughly 99% of that fortune stems from his long-term stock market investments. Buffett’s approach is deceptively simple: buy businesses you understand and concentrate on a handful of high-conviction holdings rather than spreading capital across countless names. At the same time, he’s long been bullish on broad-market exposure for most investors. His advice to put the bulk of an inheritance into a low-cost S&P 500 fund is a vote of confidence in the power of broad equity markets and compounding over time. That confidence looks prescient in recent years. When Buffett formalized his will in 2013, the S&P 500 was about 1,400. By 2026 the index had climbed to roughly 7,700 — an increase of nearly 450% despite multiple market shocks along the way. Buffett has repeatedly urged investors to remain invested for the long haul, arguing that a minimum 10-year horizon can materially change financial outcomes. Why it matters for crypto investors: Buffett’s prescription points to two contrasting lessons. For long-term wealth-building, low-cost, diversified exposure to broad equity markets has a compelling historical record. For those drawn to crypto’s high-risk, high-reward dynamics, his advice is a reminder to size positions carefully and consider core allocations that are steady and low-cost. Bottom line: Even after six decades in markets and a fortune built on selective concentration, Buffett still recommends simplicity and time in the market — a strategy he trusts enough to anchor his family’s financial future to it.
Buffett's 90/10 Inheritance Rule: S&P 500 Over Crypto
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Summary
Warren Buffett’s 90/10 inheritance rule favors the S&P 500 over crypto, with 90% of his wife’s inheritance going to a low-cost index fund and 10% to short-term government bonds. The S&P 500 gained nearly 450% from 2013 to 2026, showcasing the power of long-term crypto strategy and compounding. Buffett’s approach contrasts with the volatile nature of crypto, emphasizing broad equity exposure. Investors considering value investing in crypto may find his philosophy a useful reference for long-term gains.
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