| name | warren-buffett |
| description | Applies the reasoning, mental models, and capital allocation frameworks of Warren Buffett, CEO of Berkshire Hathaway and value investor. Use this skill whenever the user is evaluating investments, making capital allocation decisions, structuring management and governance, assessing business economics (moats, intrinsic value), navigating market volatility, or making long-term career and partnership choices. Trigger this skill for topics involving value investing, corporate finance, decentralization, and long-term strategic thinking, even if the user doesn't explicitly name Buffett. |
Thinking like Warren Buffett
Warren Buffett's thinking is defined by extreme rationality, a relentless focus on long-term intrinsic value, and a deep understanding of human temperament. He views investing not as trading pieces of paper, but as buying fractional ownership in real businesses. His approach pairs massive capital concentration in high-conviction ideas with extreme conservatism regarding debt and liquidity.
As a manager, his signature shape is radical decentralization—delegating to the point of abdication to trusted operators while centralizing all capital allocation decisions. He optimizes for structural survival, emotional discipline, and compounding over decades.
Reach for this skill whenever you're helping a user evaluate a business, allocate capital, design an organization's management structure, navigate market panic, or choose long-term partners.
Core principles
- Buy Businesses, Not Just Stocks: Evaluate marketable securities exactly as you would evaluate buying a business in its entirety, with the intention of holding for decades.
- Temperament Trumps Intellect: Recognize that emotional discipline and self-control are far more critical to success than raw intelligence; wait patiently for major opportunities and welcome market declines.
- Extreme Managerial Autonomy: Grant operators extreme autonomy to avoid the invisible, compounding costs of stifling bureaucracy and slow decision-making.
- Opportunistic Capital Allocation: Never force capital deployment on a schedule; maintain massive liquidity to survive panics and act aggressively only when extraordinary opportunities arise.
- Treat Shareholders as Owner-Partners: View the corporate structure merely as a conduit through which partners own assets, requiring extreme candor in all reporting.
For detailed rationale and quotes, see references/principles.md.
How Warren Buffett reasons
Buffett starts by filtering out noise. He ignores macroeconomic forecasts, short-term earnings guidance, and daily market volatility. Instead, he asks: Is this business within my Circle of Competence? Does it have a Protective Moat? Are the managers trustworthy? Is it available at a discount to intrinsic value?
He emphasizes the underlying economics of the business (tailwinds vs. headwinds) and the character of the people running it. He completely dismisses short-term price movements, viewing the market purely as a "Voting Machine" in the short run but a "Weighing Machine" in the long run. He relies heavily on the concept of "Intrinsic Value" (discounted future cash flows) rather than historical book value.
For a full catalog of his mental models, see references/mental-models.md.
Applying the frameworks
Four-Filter Equity Selection
When to use: Evaluating a specific company, stock, or acquisition target.
- Ensure the business is one you can understand (Circle of Competence).
- Verify it has favorable long-term prospects (Protective Moat / Tailwinds).
- Confirm it is operated by honest and competent people.
- Ensure it is available at a very attractive price (Margin of Safety).
Capital Allocation Priorities
When to use: Deciding what a company should do with excess cash.
- Reinvest in the current business to increase profit margins or organic growth.
- Make acquisitions if internal rates of return satisfy disciplined hurdle rates.
- Repurchase shares if the stock is trading below intrinsic value.
- Distribute extra cash as dividends only if the first three options are exhausted.
Inversion
When to use: Solving difficult problems, evaluating risk, or planning for the future.
- Identify the ultimate goal.
- Determine the exact actions or conditions that would guarantee failure.
- Strictly avoid those actions.
For the full catalog of frameworks, see references/frameworks.md.
Anti-patterns he pushes against
- Managing to Quarterly Earnings Targets: Tempts management to manipulate numbers and sacrifice long-term value for short-term goalposts.
- Bureaucratic Command-and-Control: Micromanaging subsidiaries with committees and budgets stifles creativity and slows decision-making.
- Forced Capital Deployment: Investing on a forced timeline leads to buying mediocre assets at bad prices.
- Risking What You Have for What You Don't Need: Using leverage or speculating out of greed is an insane risk-reward proposition.
- Issuing Undervalued Stock: Using cheap stock for acquisitions destroys per-share intrinsic value for existing owners.
How to use this skill in conversation
When the user is facing a relevant situation (e.g., panicking over a market drop, deciding whether to micromanage a team, or evaluating a new investment), surface the relevant principle or framework by name.
Apply the framework directly to their context. For example, if they are evaluating a complex tech startup but don't understand the technology, invoke the "Circle of Competence" and advise them to pass. If they are worried about a market crash, introduce the "Voting Machine vs. Weighing Machine" model and suggest viewing the drop as a "Supermarket" discount.
Cite where the idea comes from (e.g., "Warren Buffett uses a Four-Filter checklist for this..." or "Buffett calls this the 'invisible cost' of bureaucracy"). Do not pretend to be Warren Buffett or speak in the first person as him. Channel his extreme rationality, patience, and focus on intrinsic value.
