Berkshire requires a 25–50% discount to intrinsic value before buying.
Buffett Quality Checklist
✓ROE >15% consistently (≥7 of last 10 years)
✓Free cash flow positive (≥8 of last 10 years)
✗Conservative leverage — Debt/Equity below 1
✗Revenue growing at CAGR >5%
✓EPS growing at CAGR >5%
10-Year Financial History — SEC EDGAR 10-K Filings
Year▲
Revenue▲
Net Income▲
FCF▲
Owner Earnings▲
ROE▲
Net Margin▲
LT Debt▲
Cash▲
2016
$24.2B
$5.4B
—
—
26.2%
22.2%
$47.0B
—
2017
$24.8B
$2.7B
$12.5B
—
15.0%
11.1%
$55.8B
—
2018
$26.6B
$6.9B
$7.6B
—
31.0%
26.0%
$58.4B
—
2019
$28.2B
$6.8B
$12.0B
—
29.3%
24.0%
$57.8B
—
2020
$22.0B
$3.1B
$4.1B
—
13.6%
14.3%
$43.0B
—
2021
$27.7B
$8.1B
$13.1B
—
36.3%
29.1%
$38.7B
—
2022
$34.2B
$7.5B
$19.2B
—
30.4%
22.0%
$42.6B
—
2023
$37.2B
$8.4B
$17.0B
—
29.8%
22.5%
$47.9B
—
2024
$38.8B
$10.1B
$12.1B
—
33.5%
26.1%
$49.7B
—
2025
$41.3B
$10.8B
$16.0B
—
32.4%
26.2%
$56.4B
—
Warren & Charlie
Buffett / Munger — quality, moat & valuation
AMERICAN EXPRESS CO (AXP) — Investment Memo
🐂 The Bull Case (Warren's voice)
Moat durability: Network effects are self-reinforcing. High-spend cardholders attract merchants; merchant acceptance attracts more cardholders. Switching costs on both sides — points, credit history, merchant fear of losing premium customers — are sticky as glue.
Exceptional economics: ROE 32.4% , net margin 26.2% , and FCF consistently above net income. Pricing power is real — they raised annual fees and discount rates without mass defection. This is a toll bridge with a subscription attached.
Attractive price range: At $260/share (25% discount to DCF value of $347), you’re buying a 30%+ ROE business with a durable moat and a modest 3% FCF growth assumption. At $173/share (50% margin), it’s a no-brainer — the market is pricing in a death spiral that hasn’t happened in 50 years.
The compounding tailwind: Premium spending grows with GDP + inflation, and the lending book (20%+ APR) generates fat spreads through any normal cycle. Buffett would say: “You get to collect tolls and charge interest — and the customer pays both.”
🐻 The Bear Case (Charlie inverts)
Regulatory guillotine: A political cap on merchant interchange fees would slice discount revenue by 30–50% overnight. AmEx has less lobbying clout than Visa/Mastercard and a higher fee structure — they’d be the first to bleed.
Decentralized rails or CBDCs: A frictionless real-time payment system that bypasses plastic (think FedNow, stablecoins, or a digital euro) could rend the network moat in a decade. Cardholders wouldn’t need AmEx, merchants wouldn’t pay 2.5%.
Hidden balance-sheet bomb: $56.4B debt on $33B equity — a 1.7× leverage ratio. Consumer card net write-offs rose 19% in a “good” economy (to 2.5% ). A recession with 5%+ write-offs (not historically extreme) would wipe out half of equity. Buybacks at peak prices have fattened EPS but hollowed out the buffer. This is not a slow leak — it’s a short-fuse dynamite.
Most likely structural threat: The regulatory cap is the nearer-term risk (5–10 years). Decentralized rails are plausible in 15–20 years. Either would permanently impair the business, not just dent earnings.
25% margin of safety entry: $260/share — conservative buy for a stable moat with manageable risk.
50% margin of safety entry: $173/share — Buffett’s ideal: enough cushion to absorb a regulatory shock or credit cycle.
Current price: Not provided, but against the DCF of $347, the stock likely trades near or slightly above intrinsic value given 2025’s sentiment. It is not cheap. The market is pricing in the moat but ignoring the loaded balance sheet.
Verdict: WATCH
At ~$347/share, the price fully reflects a durable moat with no margin for error — and the balance sheet has a crack that could widen in a downturn.Wait for a 25%+ discount that compensates for the debt risk and regulatory overhang. The moat is real, but the entry price must leave room for the dynamite.
Exactly 3 sentences: Watch because value is fair but not compelling; the debt and write-off trends demand a wider safety margin; conviction in the moat is high, but patience will be rewarded.
Data sourced from SEC EDGAR XBRL filings (10-K only). For educational purposes — not investment advice.