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
$79.9B
$11.9B
$13.5B
$11.1B
65.1%
14.9%
$40.9B
$7.8B
2017
$79.1B
$5.8B
$13.5B
$5.5B
32.7%
7.3%
$45.1B
$12.0B
2018
$79.6B
$8.7B
$11.9B
$8.5B
52.0%
11.0%
$42.7B
$11.4B
2019
$57.7B
$9.4B
$12.5B
$11.4B
45.3%
16.3%
$54.1B
$8.2B
2020
$55.2B
$5.6B
$15.6B
$7.2B
27.1%
10.1%
$54.2B
$13.2B
2021
$57.4B
$5.7B
$10.7B
$7.6B
30.4%
10.0%
$44.9B
$6.7B
2022
$60.5B
$1.6B
$9.1B
$2.7B
7.5%
2.7%
$46.2B
$7.9B
2023
$61.9B
$7.5B
$12.7B
$8.4B
33.3%
12.1%
$50.1B
$13.1B
2024
$62.8B
$6.0B
$12.4B
$7.1B
22.1%
9.6%
$49.9B
$13.9B
2025
$67.5B
$10.6B
$12.1B
$11.8B
32.4%
15.7%
$54.8B
$13.6B
Warren & Charlie
Buffett / Munger — quality, moat & valuation
INTERNATIONAL BUSINESS MACHINES CORP (IBM) — Investment Memo
🐂 The Bull Case (Warren's voice)
The investment case isn't "technology"—it's utility. IBM is a global landlord for critical enterprise infrastructure.
The "Unfireable" Moat: IBM owns the "plumbing" of the global financial and government sectors. These clients aren't buying the latest tech; they are buying the certainty that their transaction will process tomorrow. That is an annuity, not a product.
FCF Consistency: When you strip away the accounting noise—the R&D write-offs and the M&A shenanigans—what remains is a company that generates $10B+ in cash like clockwork. That is a fortress in a storm.
Hybrid Cloud as a Moat, Not a Product: By positioning themselves as the "middleman" between cloud providers (AWS/Azure) and on-premise legacy systems, IBM has effectively forced themselves into the architecture of modern enterprise. They aren't trying to win the cloud war; they are selling the shovels to the people fighting it.
The Price Point: IBM becomes attractive only when Mr. Market gets bored of the lack of "glamour" growth. We want this business when the multiple compresses to a point where the free cash flow yield starts looking like a high-yield bond with an inflation hedge attached.
🐻 The Bear Case (Charlie inverts)
Show me where I'll die and I won't go there. How does IBM collapse?
The Acquisition Treadmill: This is the primary structural rot. When a company stops innovating, it starts buying. They are currently paying for revenue growth rather than earnings quality. Eventually, the cost of integrating these disjointed, expensive acquisitions will exceed the synergies they are supposed to create. It is a slow, expensive suicide.
Technical Bankruptcy: IBM’s "moat" is actually technical debt. They win because the client is too lazy or scared to move. But technology is an accelerating force; one day, the cost-benefit analysis will shift, and the migration to newer, leaner cloud-native architecture will become cheaper than the cost of maintaining the "IBM hostage situation." That won't happen overnight, but it is inevitable.
The Talent Drain: Great engineers want to solve new problems, not maintain legacy mainframes from 1985. If your workforce becomes a collection of custodians instead of creators, your institutional knowledge is just a museum exhibit. A culture that celebrates maintenance over creation is a company in its sunset.
💰 Valuation & Margin of Safety
Reacting to the provided DCF ($189.84/share intrinsic value):
Intrinsic value estimate: $189.84 per share.
25% margin of safety entry: $142.38(The "fair" price for a slow-grower).
50% margin of safety entry: $94.92(The "Buffett" price—when the panic is absolute).
Assessment: At current market pricing (often trading north of $200), IBM is currently expensive. It is priced for growth that it hasn't demonstrated, trading on the "AI" narrative rather than the reality of its stagnant, cash-cow economics. There is no margin of safety here; you are paying for the blue-chip name while buying an acquisition-heavy utility.
Verdict: WATCH
The current valuation demands perfection from a business model that relies on buying growth rather than engineering it. We will wait for the market to lose interest in the "AI story," pushing the price back toward our $142 entry threshold. Until the acquisition treadmill stops and organic FCF growth takes over, this remains a museum piece, not a compounder.
Research Notes· Money Model · Moat · Financials · Management
Data sourced from SEC EDGAR XBRL filings (10-K only). For educational purposes — not investment advice.