What is Warren Buffett's 9010 rule ?

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Warren Buffett's 90/10 Rule Explained — Is This Simple Investing Strategy Right for You?  Warren Buffett revealed his famous 90/10 rule in a 2013 shareholder letter, and it's one of the simplest investing strategies ever recommended by one of the world's most successful investors. The idea is straightforward: put 90% of your money into a low-cost S&P 500 index fund and keep 10% in short-term government bonds. In this video, we unpack why Buffett chose this exact split, what evidence backs it up, and — just as importantly — who this strategy actually fits and who it doesn't.  Here's what you'll learn:  The origin of Buffett's 90/10 rule and why he created it Why most actively managed funds struggle to beat simple index investing over time The real purpose of the 10% bond allocation (hint: it's not about returns) How this approach differs from age-based allocation models like "100 minus your age" Why 90/10 works differently than 60/40 or risk-parity portfolios Who should — and shouldn't — consider this investing strategy  This isn't about blindly copying a formula. Buffett's asset allocation approach depends heavily on your time horizon, risk tolerance, and cash-flow needs, so we walk through the tradeoffs honestly instead of oversimplifying them. If you're building a long-term investment strategy and want to understand where this rule fits, this breakdown gives you the full picture.  Watch till the end to see how this rule compares to other retirement strategies, and let us know in the comments what allocation you currently follow. If this video helped clarify Buffett's thinking, consider liking and subscribing for more breakdowns like this.  #WarrenBuffett #90-10Rule #IndexFundInvesting #InvestingStrategy #PersonalFinance #S&P500 #RetirementPlanning #LongTermInvesting

Transcript

00:00Warren Buffett's 90-10 rule is a simple asset allocation instruction he gave in his

00:052013 Berkshire Hathaway shareholder letter, specifically for the cash left to his wife's

00:10trust after his death. Put 90% into a low-cost S&P 500 index fund and 10% into

00:17short-term

00:18government bonds. The logic rests on two pillars. One, over long horizons, few active managers beat

00:25a broad index after fees. Buffett has repeatedly cited data, including his own 2007-decade-long

00:32bet against hedge funds, which he won decisively, showing most professionally managed funds

00:38underperform simple indexing once fees. Roughly 1-2% annually for active funds versus under 0.1%

00:45for index funds like VOO or SPY are factored in. Two, the 10% bond allocation exists purely as a

00:52liquidity buffer, letting the holder avoid selling stocks during a downer to cover near-term cash

00:58needs. Since equities historically recover but can take years, the S&P 500 took about 5-6 years to

01:05fully recover after the 2008 crash. This differs fundamentally from standard retirement allocation

01:11models. A. Traditional age-based rules, e.g., 100 minus your age in stocks, gradually shift toward

01:19bonds as retirement nears, while Buffett's ratio stays fixed regardless of age. B. Risk parity or

01:2660-40 portfolios diversify across more asset classes for smoother volatility, whereas 90-10 accepts higher

01:33short-term volatility for higher expected long-term return. Context changes its suitability. It fits

01:40investors with long-time horizons, 10-plus years, and high risk tolerance, but is arguably too aggressive

01:46for someone near retirement needing income stability or for non-U.S. investors without easy access to

01:52low-cost S&P 500 equivalents. I can't verify current expense ratios or exact historical return

02:00figures beyond general knowledge, so check current fund data directly. Practically, this rule is a

02:06starting framework, not a universal prescription. Adjust the ratio based on your own time horizon and

02:12cash flow needs rather than copying it exactly. Finally, remember that everything we discussed today

02:17is for educational purposes only and does not constitute financial advice. Good luck to everyone

02:23and see you in the next video.

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