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
$39.8B
—
$3.6B
—
—
—
—
$3.2B
2017
$41.8B
—
$3.6B
—
—
—
—
$3.0B
2018
$48.6B
—
$3.2B
—
—
—
—
$3.9B
2019
$153.6B
—
$8.4B
—
—
—
—
$4.6B
2020
$160.4B
—
—
—
—
—
—
$10.2B
2021
$174.1B
—
—
—
—
—
—
$5.1B
2022
$180.5B
—
—
—
—
—
—
$5.9B
2023
$195.3B
$5.2B
—
—
11.2%
2.6%
—
$7.8B
2024
$247.1B
$3.4B
—
—
8.4%
1.4%
—
$7.5B
2025
$274.9B
$6.0B
—
—
14.3%
2.2%
—
$7.7B
Warren & Charlie
Buffett / Munger — quality, moat & valuation
Cigna Group (CI) — Investment Memo
🐂 The Bull Case (Warren's voice)
We aren't buying an insurance company; we are buying a toll booth on the American healthcare highway.
The "Plumbing" Moat: Evernorth isn't just a service; it is the infrastructure. When a company integrates Cigna’s pharmacy benefit management (PBM) and clinical services, ripping it out is surgical trauma. The switching costs are immense.
The Float Engine: Like our beloved GEICO, the insurance arm provides a steady stream of float. While the net margins look thin on the P&L, the cash flow is the heartbeat. They collect premiums upfront and pay claims later.
The Pivot to Services: The shift from "paying claims" (Healthcare) to "managing care" (Evernorth) is the key. Services have stickier revenue and higher quality earnings than the volatile underwriting of insurance.
The Essentiality: Healthcare spending is the ultimate non-discretionary expense. As the population ages, the volume of claims increases. Cigna doesn't need to "innovate" to win; they just need to exist as the middleman.
Attractive Entry: This becomes a Berkshire-grade asset when the price reflects a utility rather than a growth stock. If we can buy it at a significant discount to its cash-generating power, the thin margins are a feature (keeping competitors away), not a bug.
🐻 The Bear Case (Charlie inverts)
Let's look at where the corpse is buried. This business is a house of cards built on a 2% margin.
The Regulatory Guillotine: The PBM model (Evernorth) is a political target. If the government mandates "transparent pricing" or caps PBM rebates, the "plumbing" doesn't just leak—it bursts. This is a structural threat that no amount of "optimization" can fix.
The Margin Fragility: A net margin of 1.4% to 2.2% is an absolute joke. In a business this size, a 1% swing in medical loss ratios (MLR) or a slight miscalculation in reserves doesn't just hurt earnings—it wipes them out. It is a high-wire act without a net.
Growth by Ledger: Revenue jumped from $153.6B to $274.9B, but earnings didn't follow the same trajectory. That is "empty calories" growth. They are buying revenue to mask a lack of organic brilliance. Buying growth is the fastest way to destroy capital.
The Most Likely Death: Federal intervention in PBMs. Timeline: 2–5 years. The political appetite for "fixing" pharmacy costs is at an all-time high. If the revenue model of Evernorth is legislated away, the valuation craters.
💰 Valuation & Margin of Safety
The DCF tells us what it's worth in a vacuum; the Margin of Safety tells us if we can sleep at night.
Intrinsic value estimate: $392.72 per share.
25% margin of safety entry: $294.54(Conservative: protects against mild regulatory headwinds).
50% margin of safety entry: $196.36(Buffett's ideal: protects against a total PBM collapse).
Current Status: Fairly valued to slightly cheap relative to the DCF, but dangerously expensive relative to the fragility of the margins. We are paying for a "moat" that the government might fill in with concrete.
Verdict: WATCH
The intrinsic value is there, but the margin of safety is missing. We cannot ignore the extreme fragility of a 2.2% net margin in a politically charged industry. We wait for a regulatory panic to drive the price toward $290 before committing capital.
Research Notes· Money Model · Moat · Financials · Management
Data sourced from SEC EDGAR XBRL filings (10-K only). For educational purposes — not investment advice.