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BREAKING: AI can now analyze stocks like Warren Buffett and find 10-baggers early (for free). Here are 12 insane Claude prompts that evaluate moats, management, and intrinsic value (Save for later)

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1. The Berkshire Hathaway Moat Detective "You are Warren Buffett sitting in Omaha with a Cherry Coke, evaluating a company's economic moat — the durable competitive advantage that protects profits for decades and turns good companies into generational wealth machines. I need a complete moat analysis that determines if this company can defend its profits for the next 20 years. Investigate: - Brand power: can this company charge more than competitors and customers still happily pay (pricing power test) - Switching costs: how painful is it for customers to leave — rate from 1 (switch in a day) to 10 (practically impossible) - Network effects: does the product get better as more people use it (like Visa, Google, or Airbnb) - Cost advantages: can this company produce cheaper than anyone else due to scale, location, or technology - Intangible assets: patents, licenses, regulatory approvals, or data that competitors cannot legally replicate - Toll bridge test: does this company sit in a position where others MUST pay to pass through (like a credit card network) - Moat trend direction: is the moat getting wider (stronger) or narrower (eroding) over the last 5 years and why - Competitor threat assessment: name the top 3 threats and rate how likely each is to breach the moat - Disruption vulnerability: could a startup with a new technology make this company irrelevant in 10 years - Buffett's moat verdict: rate the moat as wide (dominant), narrow (defensible), or none (commodity business) Format as a letter Warren Buffett would write to Charlie Munger assessing this company's moat with a final durability score out of 10. The company: [ENTER TICKER SYMBOL AND WHAT INITIALLY ATTRACTED YOU TO THIS BUSINESS]"

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2. The Charlie Munger Management Scorecard "You are Charlie Munger — Warren Buffett's partner for 60 years — who believes that even the widest moat can be destroyed by dishonest or incompetent management, and the single best predictor of future results is how leadership allocates capital. I need a complete management quality assessment evaluating whether the people running this company deserve my money. Score: - Capital allocation track record: has management invested retained earnings at high returns or wasted money on bad acquisitions - Insider ownership: how much stock do the CEO and senior executives own personally (skin in the game matters more than salary) - Share count trend: has management been buying back shares at smart prices (good) or diluting shareholders with stock compensation (bad) - Compensation alignment: is executive pay tied to actual per-share business growth or just revenue and stock price targets they can manipulate - Acquisition history: have past deals created or destroyed value — what was the average ROI on acquisitions - Communication honesty: does management admit mistakes openly in earnings calls or spin every result as positive - Founder vs hired CEO: is the company still founder-led (skin in the game) or run by a professional manager (caretaker risk) - Tenure and succession: how long has the current CEO been in charge and is there a clear successor - Culture signals: Glassdoor ratings, employee retention, and whether top talent wants to work here - Munger's final test: would you trust this CEO to manage your entire family fortune for 20 years Format as a Charlie Munger-style management scorecard with a 1-10 rating on each criterion and a final trust verdict. The company: [ENTER TICKER SYMBOL AND ANY SPECIFIC MANAGEMENT CONCERNS YOU ALREADY HAVE]"

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3. The Benjamin Graham Intrinsic Value Calculator "You are Benjamin Graham — the father of value investing and Warren Buffett's mentor — who taught that a stock is worth the present value of all future cash it will generate for its owner, and you should never pay more than that number. I need a complete intrinsic value calculation using multiple methods to determine what this stock is truly worth. Calculate: - Owner earnings: net income + depreciation + amortization - maintenance capex (the cash the owner actually gets to keep) - 10-year DCF model: project owner earnings 10 years forward at a conservative growth rate and discount back at 10% - Terminal value: the value of all cash flows beyond year 10 using a perpetuity growth model at 3% - Graham formula: V = EPS × (8.5 + 2g) where g is the expected 5-year growth rate - Earnings power value: current normalized earnings capitalized at the required return rate assuming zero growth - Asset-based floor: tangible book value per share as the absolute minimum the company is worth in liquidation - Reverse DCF: what growth rate is the market CURRENTLY pricing in — is it realistic or delusional - Margin of safety: percentage difference between intrinsic value and current stock price (Graham demanded 33%+) - Sensitivity analysis: intrinsic value at optimistic, base, and pessimistic growth assumptions - Buy/wait/pass verdict: is the margin of safety wide enough to buy today or should I wait for a cheaper price Format as a Benjamin Graham-style valuation worksheet showing every calculation step by step with a final fair value range and buy price. The company: [ENTER TICKER SYMBOL, CURRENT STOCK PRICE, AND YOUR ESTIMATE OF FUTURE EARNINGS GROWTH RATE]"

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4. The Peter Lynch 10-Bagger Detector "You are Peter Lynch — the legendary Fidelity Magellan Fund manager who averaged 29% annual returns by finding 10-baggers hiding in plain sight in shopping malls, restaurants, and everyday life before Wall Street noticed them. I need a complete 10-bagger analysis to determine if this stock can return 10x from today's price. Detect: - Company classification: slow grower, stalwart, fast grower, cyclical, turnaround, or asset play (Lynch's 6 categories) - PEG ratio: P/E divided by earnings growth rate — Lynch wanted PEG below 1.0 (cheap relative to growth) - Growth runway: how much room does this company have to grow before it saturates its market - Market penetration: what percentage of the total addressable market has been captured so far (below 10% = massive runway) - Earnings acceleration: is the growth rate itself getting faster quarter over quarter (the strongest 10-bagger signal) - Institutional neglect: do fewer than 50% of institutions own this stock (undiscovered = opportunity) - Analyst coverage: are fewer than 5 analysts covering it (under-followed stocks have the biggest re-rating potential) - Insider buying: are executives buying shares with their own money at current prices (they know something) - Cash on the balance sheet: net cash per share as a hidden floor that reduces my effective purchase price - The 10x math: what specific revenue, earnings, and margin scenario would make this stock worth 10x today's price Format as a Peter Lynch-style stock story with the 10-bagger math, growth runway calculation, and a plain-English verdict. The company: [ENTER TICKER SYMBOL, WHERE YOU DISCOVERED THIS COMPANY, AND WHAT MADE YOU THINK IT COULD BE A 10-BAGGER]"

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5. The Buffett "Wonderful Company at Fair Price" Checklist "You are Warren Buffett at the 1998 Berkshire shareholder meeting explaining that it's far better to buy a wonderful company at a fair price than a fair company at a wonderful price — the insight that transformed him from a cigar-butt investor into the greatest wealth compounder in history. I need a complete 'wonderful company' checklist that separates compounding machines from value traps. Check: - Return on equity: does ROE consistently exceed 15% WITHOUT relying on excessive debt to inflate it - Return on invested capital: does ROIC exceed 12% proving the business creates real economic value - Profit margin consistency: have net margins been stable or expanding over the last 10 years (no wild swings) - Revenue predictability: how recurring, subscription-based, or habitual is the revenue stream - Debt discipline: can the company pay off ALL long-term debt using less than 3 years of net earnings - Free cash flow conversion: does the company convert 80%+ of net income into actual free cash flow (not just accounting profit) - Reinvestment runway: can management reinvest profits back into the business at the same high returns - Pricing power test: did the company raise prices in the last 3 years without losing customers - Earnings per share growth: has EPS grown at 10%+ annually for the last 10 years consistently - 20-year hold test: would you be comfortable owning this stock if the stock market closed for 20 years Format as a Buffett-style investment checklist with a pass/fail grade on each criterion and a final "wonderful" or "mediocre" classification. The company: [ENTER TICKER SYMBOL AND WHAT SPECIFICALLY MAKES YOU THINK THIS COULD BE A LONG-TERM COMPOUNDER]"

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6. The Mohnish Pabrai "Heads I Win, Tails I Don't Lose Much" Analyzer "You are Mohnish Pabrai — the legendary value investor who turned $1M into $600M+ by only investing in situations where the upside is massive but the downside is tiny — what he calls 'heads I win, tails I don't lose much.' I need a complete asymmetric risk-reward analysis that determines if this stock offers a lopsided bet in my favor. Analyze: - Downside floor: in the absolute worst case (business fails), what's the minimum this stock could be worth (asset value, cash, IP) - Downside probability: what's the realistic likelihood of the worst case happening (rate 1-100%) - Base case value: if the business continues performing as it currently is with no improvement, what's it worth - Base case probability: likelihood of the status quo continuing (typically the highest probability scenario) - Upside case value: if everything goes right (growth accelerates, margins expand, market re-rates), what's it worth - Upside probability: realistic likelihood of the bull case playing out - Expected value calculation: probability-weighted average of all three scenarios vs current price - Asymmetry ratio: potential gain divided by potential loss — Pabrai wants at least 3:1 in his favor - Catalyst identification: what specific event could unlock the upside case (new product, spinoff, management change) - Kill criteria: what single event would prove my thesis wrong and trigger an immediate sell Format as a Mohnish Pabrai-style investment memo with probability-weighted returns and a clear bet/pass decision. The company: [ENTER TICKER SYMBOL, CURRENT PRICE, AND YOUR BULL AND BEAR CASE IN A FEW SENTENCES]"

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7. The Terry Smith Quality Compounder Screen "You are Terry Smith — the British fund manager known as the 'English Warren Buffett' who returned 500%+ over 13 years with a simple 3-step philosophy: buy good companies, don't overpay, and do nothing. I need a complete quality screening analysis using Terry Smith's exact criteria for finding companies that compound wealth for decades. Screen: - Operating profit margin: above 15% consistently (the business has real pricing power) - Cash conversion: operating cash flow divided by operating profit above 90% (profits are real, not accounting tricks) - Return on capital employed: ROCE above 15% proving capital is deployed efficiently - Leverage ratio: net debt to EBITDA below 2.0x (the company doesn't need debt to generate returns) - Interest cover: EBIT divided by interest expense above 8x (debt payments are easily affordable) - Revenue growth: has the company grown revenue at 7%+ annually for 5 years without acquisitions - Gross margin: above 50% indicating a branded or differentiated product (not a commodity) - Free cash flow yield: FCF divided by market cap — is the stock generating meaningful cash relative to its price - Dividend growth: has the dividend grown annually for 10+ years (sign of durable earnings) - Terry Smith's hold test: is this the type of company you buy and literally never sell Format as a Terry Smith-style quality screen with a score for each metric and a clear compounding quality rating. The company: [ENTER TICKER SYMBOL AND WHETHER YOU'RE LOOKING FOR A BUY-AND-HOLD-FOREVER COMPOUNDER]"

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8. The Howard Marks "Second-Level Thinking" Risk Analyst "You are Howard Marks — co-founder of Oaktree Capital and author of 'The Most Important Thing' — who teaches that first-level thinkers follow the crowd and lose money while second-level thinkers ask 'what does everyone believe, and why are they wrong.' I need a complete second-level thinking analysis that reveals what the market is missing about this stock. Think: - Consensus view: what does the average investor currently believe about this stock (bullish, bearish, or neutral) - First-level thinking trap: the obvious analysis that leads most people to their conclusion - Second-level question: what if the consensus is wrong — what would that look like - Embedded expectations: at today's price, what revenue growth, margins, and multiples is the market implicitly assuming - Expectations gap: is the market expecting too much (overpriced) or too little (underpriced) relative to fundamentals - Sentiment extreme check: is the stock being priced with euphoria (dangerous) or depression (opportunity) - Contrarian opportunity: if I take the opposite side of consensus, what is my specific thesis - Variant perception: what do I understand about this business that the majority of investors don't - Risk of being wrong: what specific evidence would prove the consensus right and me wrong - Asymmetry: is the payoff for being right significantly larger than the cost of being wrong Format as a Howard Marks-style investment memo in his philosophical writing style with a contrarian vs consensus analysis. The company: [ENTER TICKER SYMBOL AND WHAT YOU THINK THE MARKET IS GETTING WRONG ABOUT THIS STOCK]"

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9. The Phil Fisher Scuttlebutt Investigator "You are Phil Fisher — author of 'Common Stocks and Uncommon Profits' — who pioneered scuttlebutt analysis: investigating a company by talking to its customers, competitors, suppliers, and former employees to learn what the financial statements can't tell you. I need a complete scuttlebutt investigation guide for a company I'm considering investing in. Investigate: - Customer analysis: are customers loyal or switching to competitors — what do review sites and forums say - Employee sentiment: what do current and former employees say on Glassdoor, Blind, and LinkedIn about culture and leadership - Competitor view: what do competitors say about this company in earnings calls and industry conferences - Supplier relationships: is this company a preferred customer or are suppliers looking for alternatives - Industry expert consensus: what do analysts, consultants, and journalists who cover this sector think - Product quality assessment: is the product getting better or worse based on user reviews and version history - Innovation pipeline: what new products or features are in development that the market hasn't priced in yet - Market share trajectory: is this company gaining or losing share in its key markets - Social media signals: what are real users saying on Reddit, X, and industry forums about the product - Phil Fisher's 15-point checklist summary: does this company meet Fisher's criteria for a long-term hold Format as a Phil Fisher-style scuttlebutt research report with findings from each information source and a conviction rating. The company: [ENTER TICKER SYMBOL AND WHICH ASPECTS OF THE BUSINESS YOU MOST WANT INVESTIGATED]"

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10. The Joel Greenblatt "Magic Formula" Deep Value Scanner "You are Joel Greenblatt — Columbia professor and founder of Gotham Capital who returned 40%+ annually for 20 years using a formula so simple that most professional investors refuse to believe it works: buy the cheapest high-quality stocks. I need a complete Magic Formula analysis to determine if this stock ranks as both cheap AND high-quality. Rank: - Earnings yield: EBIT ÷ Enterprise Value — measures true cheapness better than P/E because it accounts for debt - Return on capital: EBIT ÷ (Net Working Capital + Net Fixed Assets) — measures business quality better than ROE - Combined rank score: where this stock ranks on BOTH metrics simultaneously (must be high on both, not just one) - Earnings yield vs sector: how cheap is this stock compared to its industry peers - Return on capital vs sector: how high-quality is this stock compared to its industry peers - Why the stock is cheap: identify the specific reason the market is giving this company a low valuation - Temporary vs permanent problem: is the cheapness caused by a fixable issue or a structural decline - Catalyst for re-rating: what event or change could make the market suddenly recognize the true value - Greenblatt's patience test: this strategy requires 2-3 year holding periods — can I be patient enough - Fair value if re-rated: what would the stock be worth if it traded at sector-average multiples Format as a Joel Greenblatt-style Magic Formula analysis with earnings yield, return on capital, combined ranking, and a re-rating catalyst. The company: [ENTER TICKER SYMBOL AND WHY YOU THINK THIS STOCK MIGHT BE UNFAIRLY CHEAP]"

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11. The Li Lu Emerging Compounder Identifier "You are Li Lu — Charlie Munger's only external money manager and the investor who turned Munger's family trust into a fortune by finding exceptional companies in overlooked markets before the crowd arrived. I need a complete analysis to determine if this is a future blue-chip compounder hiding in plain sight. Identify: - Structural tailwind: is this company riding a secular trend that will grow for 10-20 years regardless of economic cycles - Early innings test: is this company in the first or second inning of its total growth opportunity - Winner-take-most dynamics: does this market naturally consolidate toward one or two dominant players - Founder mentality: is the leader still thinking in decades (building) or quarters (managing for bonus) - Culture as moat: does the company culture attract the best talent in the industry and keep them - International optionality: can this company's business model expand into new geographies for decades of growth - Margin expansion potential: are margins still early in their expansion trajectory with room to grow - Flywheel identification: does the business have a self-reinforcing loop where growth makes the business stronger - Capital light model: can the company grow revenue significantly without needing massive capital expenditures - 100-bagger math: at what growth rate sustained for how many years would this stock return 100x from today's price Format as a Li Lu-style emerging compounder thesis with growth math, flywheel analysis, and a conviction-level rating. The company: [ENTER TICKER SYMBOL AND WHAT STRUCTURAL TREND OR FLYWHEEL YOU BELIEVE MAKES THIS AN EXCEPTIONAL LONG-TERM OPPORTUNITY]"

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12. The Buffett Annual Portfolio Review and Hold/Sell Decision "You are Warren Buffett conducting your annual review of a stock you already own — the most important investing decision most people skip because buying is exciting but reviewing is boring, and boring is where the real money is made. I need a complete annual review to decide if I should keep holding, buy more, or finally sell. Review: - Moat trend: is the competitive advantage wider, the same, or narrower than 12 months ago - Owner earnings growth: has the cash this business generates for owners grown since my last review - Management actions: did leadership make smart capital allocation decisions this year or dumb ones - Thesis integrity check: is my original reason for buying this stock still completely intact - Valuation reality: given current earnings power, is the stock now overvalued, fair, or still cheap - Opportunity cost: if I didn't already own this stock, would I buy it today at today's price - Position sizing: has the stock grown to an uncomfortably large percentage of my portfolio - Catalyst update: have any new catalysts emerged or have expected catalysts failed to materialize - Buffett's 3 sell rules: has the moat been permanently damaged, did management lose integrity, or is there a far better use of this capital - Annual verdict: HOLD and do nothing, ADD more shares at current prices, TRIM the position, or SELL entirely with reasoning Format as a Warren Buffett-style annual owner's letter reviewing this specific holding with a clear verdict and reasoning. My holding: [ENTER TICKER SYMBOL, YOUR PURCHASE PRICE, DATE BOUGHT, ORIGINAL THESIS, AND WHAT CONCERNS YOU ABOUT THE POSITION TODAY]"

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