What does Warren Buffett look for in a stock?

Buffett's four filters: (1) a business he understands, (2) with favorable long-term economics protected by a durable moat, (3) run by honest and capable management, (4) available at an attractive price relative to intrinsic value. All four must be true — not just three.

How long does Warren Buffett hold stocks?

Buffett's preferred holding period is 'forever.' His largest positions (Coca-Cola, American Express, Apple) have been held for years to decades. The compounding logic: every sale resets the tax clock and forces you to find a new wonderful business — a high bar to clear.

Does Buffett use technical analysis?

No. Buffett has been explicit that he ignores stock charts entirely and pays no attention to price patterns, moving averages, or technical indicators. His framework is purely fundamental: estimate the business's intrinsic value and buy when the market offers a meaningful discount.

What is Warren Buffett's most important investment rule?

Rule No. 1: Never lose money. Rule No. 2: Never forget rule No. 1. The deeper meaning is that protecting capital matters more than maximizing returns — a 50% loss requires a 100% gain to recover, so avoiding permanent capital impairment compounds faster than chasing upside.

Warren Buffett Investment Checklist — 12 Questions

Why a checklist?

Charlie Munger and Warren Buffett both credit checklists for avoiding their biggest mistakes. Surgeons and pilots use checklists for the same reason investors should: under pressure, smart people forget obvious things. A checklist forces discipline when emotion takes over.

Section 1: Is this a business you understand?

1. Can you explain the business in one paragraph?

If you can't explain how the company makes money — who pays, why they pay, and what could make them stop — you don't understand it well enough to own it. Buffett famously skipped tech for decades for this reason.

2. Where will this business be in 10 years?

Not "what will the stock price be" — what will the business itself look like. If the answer is "probably very similar, just bigger" (Coca-Cola, Visa, Costco), that's a Buffett business. If it's "honestly, no idea," skip it.

Section 2: Does it have a moat?

3. What protects this business from competition?

Specifically: brand power (Coca-Cola), switching costs (Microsoft), network effects (Visa), cost advantages (Costco), or intangible assets (Moody's regulatory franchise). Vague answers ("good products", "great team") are not moats. Read our guide on what makes an economic moat.

4. Is the moat widening or narrowing?

Moats are not static. A great moat 10 years ago can be a narrow moat today (newspapers, cable TV). Look at market share trend, gross margin trend, and customer churn. Numbers don't lie about moat decay.

5. Are returns on capital high and stable?

ROIC above 15% sustained for 10+ years is the financial signature of a real moat. ROIC that swings between 5% and 25% means there is no moat — only cyclicality.

Section 3: Is management trustworthy and capable?

6. Are they honest with shareholders?

Read 10 years of CEO letters and earnings calls. Do they acknowledge mistakes by name? Do they explain failures or hide them in jargon? Buffett: "We seek managers who explain their thinking with clarity and candor."

7. How do they allocate capital?

The CEO's most important job is deciding what to do with the cash. Are buybacks done at sensible prices? Are acquisitions disciplined or empire-building? Are dividends maintained without starving the business?

8. Do they have skin in the game?

Significant insider ownership aligns management with shareholders. Founder-led or family-owned companies (Berkshire, Costco originally, Markel) often outperform precisely because management thinks like owners.

Section 4: Is the business financially strong?

9. Is the balance sheet conservative?

Net debt / EBITDA below 3× for most industries; lower for cyclicals. Excessive leverage turns business problems into solvency problems. Buffett: "We never want to count on the kindness of strangers."

10. Does the business generate cash, not just earnings?

Free cash flow should track net income over 5-10 years. Persistent gaps between earnings and cash usually indicate aggressive accounting, working-capital build, or accelerating maintenance CapEx.

Section 5: Is the price right?

11. What is your estimate of intrinsic value?

Use DCF, Graham Formula, or owner earnings — but always end up with a range. See our guide to calculating intrinsic value.

12. Does the current price offer a margin of safety?

Wide-moat predictable businesses: 15-25% discount. Average quality: 30-40%. Cyclical or uncertain: 40-50% or pass. If the math only works at full price, the answer is "wait" — not "rationalize."

How to use this in practice

Write your answers out longhand. Forcing yourself to articulate beats vague mental approval every time.
If you can't answer 8+ confidently, the investment is outside your circle of competence today.
Re-run the checklist annually for every position. Moats erode silently — the checklist makes erosion visible.

The Warren Buffett Investment Checklist (12 Questions)