This piece explains why Berkshire Hathaway is so successful. Guest Chris Bloomstran says it's mainly due to insurance float (money from premiums that can be invested before claims are paid) giving cheap capital, not stock-picking genius. He's bullish on Berkshire overall, especially Berkshire Energy (BHE), predicting its profit will double and surpass the railroad business. Three key holdings: Berkshire Hathaway ($50B annual profit, 12x P/E, seen as cheap); Berkshire Energy ($40B profit, heavy renewable investment); Occidental Petroleum (Oxy) ($10B preferred stock plus common shares, betting on energy scarcity).
At a Glance This episode of Business Breakdowns invites Chris Bloomstran of Semper Augustus to delve into what makes Berkshire Hathaway unique. The core argument is that Berkshire’s success stems not only from Buffett and Munger’s stock-picking prowess but, more critically, from the low-cost capital
Chris Bloomstran (President and CIO of Semper Augustus) provides an in-depth analysis of Berkshire Hathaway. The core judgment: Berkshire’s success is primarily attributable to the low-cost capital generated by insurance float, rather than stock-picking ability alone — Bloomstran argues that the market’s main misunderstanding of Buffett is an excessive focus on "what to buy," while overlooking the more fundamental question of "with what money to buy."
Chris Bloomstran argues that float is the fundamental advantage distinguishing Berkshire from all other investment institutions, and it is nearly impossible to replicate.
Berkshire holds approximately $150 billion in insurance float—funds collected as premiums in advance, available for use before claims are paid. Bloomstran notes that Berkshire’s insurance operations are divided into three segments: GEICO (annual premiums of roughly $40 billion), BH Primary specialty insurance (about $13 billion), and reinsurance (around $20 billion), totaling approximately $70 billion in premium income.
The key difference lies in capital structure. Bloomstran uses data to illustrate Berkshire’s uniqueness:
| Metric | Berkshire | Global Reinsurance Industry |
|---|---|---|
| Premiums as share of industry | 7% (~$20 billion in reinsurance premiums) | 100% (~$300 billion) |
| Statutory surplus as share of industry | 40% (~$260 billion) | 100% (~$650 billion) |
| Equity investments as share of portfolio | Majority (~$320 billion in stocks) | 4-5% (e.g., Alleghany at only 15%) |
Bloomstran emphasizes: "For every $1 of capital, the global reinsurance industry writes $1 in premiums; Berkshire writes only $0.07 in premiums per $1 of capital." This extremely conservative underwriting discipline means Berkshire can actively shrink its business when market pricing is unreasonable—"a 30%, 40%, or 50% decline in premium volume is irrelevant"—while competitors (such as Munich Re and Swiss Re) "have never seen a premium they didn’t like."
The true power of float lies on the investment side: Berkshire can invest the majority of its float in equities, capturing stock returns (roughly 10% long-term), whereas other insurers can only invest in bonds (yielding 3-4%). Bloomstran calculates: "Compounding an extra 3 to 6 percentage points annually over decades ultimately leads to an exponential difference in the balance sheet."
Readers should note: Bloomstran is a long-term major shareholder of Berkshire, and his analysis reflects a position-holder’s perspective, though the data itself is verifiable.
Bloomstran argues that the biggest misconception about Buffett is the excessive focus on "what stocks to buy," while ignoring the more fundamental question of "where to obtain capital."
He proposes a thought experiment: if Berkshire's success were attributed to 100 points, float and capital structure should account for the majority. Bloomstran points out that before 1998 (i.e., before the acquisition of General Re), Berkshire was essentially a "leveraged operation"—the investment assets in the insurance business exceeded Berkshire's own book value, equivalent to 10-15% leverage. This enabled Berkshire to achieve an annualized return of 28-29% before 1998.
The acquisition of General Re (1998) was a turning point: At the time, Berkshire's stock traded at 3 times book value, and its stock portfolio (e.g., Coca-Cola accounted for 40%) was severely overvalued. Buffett used Berkshire stock to acquire General Re, completing the deal at a "2 dollars for 1 dollar" price (Berkshire's intrinsic value was $11, stock price $22). This transaction increased float from $7 billion to $22 billion, while reducing the stock portfolio as a percentage of book value from 115% to 69%.
Bloomstran emphasizes: "Buffett knew the float was trapped in an overvalued stock portfolio." After acquiring General Re, Berkshire allocated a significant amount of capital to fixed-income assets, and subsequently acquired MidAmerican Energy (now Berkshire Hathaway Energy) in 1999, initiating a diversification into non-insurance businesses.
Key mechanism: Berkshire's current annual profit is approximately $50 billion (Bloomstran's adjusted conservative estimate), of which insurance underwriting profit is only about $3 billion (5% pre-tax margin), while investment portfolio returns are at least $21 billion (based on a 6.2% earnings yield), and could actually be as high as $30-35 billion. "It is the investment portfolio that drives the bus."
Bloomstran believes that Berkshire Hathaway Energy (BHE) is the most important growth driver over the next decade, with its scale set to surpass the railroad business.
Berkshire Hathaway Energy owns three utility companies (MidAmerican, Nevada Power, and Pacific Corp), with equity capital of approximately $40 billion and a return on equity exceeding 10%. Unlike most utility companies, Berkshire Hathaway Energy does not pay dividends to its parent company; instead, it reinvests all profits into renewable energy and grid infrastructure.
Key data points:
Bloomstran predicts: "The energy business currently generates annual profits of $4 billion, which will grow to $8 billion over the next 7–10 years, making its scale larger than the railroad." The railroad (BNSF) currently generates annual profits of approximately $7 billion, but its growth tracks GDP, whereas the energy business has a longer capital expenditure runway.
On oil and gas investments: Bloomstran notes that Berkshire's investment in Occidental Petroleum (Oxy) demonstrates the "ability to change its mind." Berkshire initially invested in Oxy via $10 billion in preferred stock (with an 8% coupon) and subsequently bought a large number of common shares at over $50 per share. Bloomstran believes this reflects a judgment on energy scarcity—approximately 3 million barrels per day of global refining capacity has been shut down (since 2019), and "you cannot build a new refinery overnight."
Bloomstran uses Berkshire's acquisition of Alleghany ($11.6 billion) as an example to illustrate that the same asset holds higher value within the Berkshire system.
Alleghany owns three insurance companies (TransRe, RSUI, Cap Specialty), with total premiums of approximately $7 billion. Before the acquisition, Alleghany's investment portfolio was around $22-23 billion, of which only $3.5 billion was invested in equities (about 15%), with the remainder in bonds. Bloomstran calculates:
| Metric | Alleghany Operating Independently | Within the Berkshire System |
|---|---|---|
| Equity Investment Ratio | 15% ($3.5B / $23B) | Can be increased to a majority |
| Investment Return | Bond returns (approx. 4%) | Equity returns (high single digits) |
| Additional Investment Income | Baseline | $600 million more per year |
| Debt | $2.5 billion in net debt | Zero debt (Berkshire will repay it) |
More important intangible value: Alleghany's reinsurance business (TransRe) previously had to cede some business to other reinsurers (due to insufficient capital). After being acquired by Berkshire, it can retain all business, directly boosting profit margins. Bloomstran also notes that the acquisition may imply a succession plan — former General Re CEO Joe Brandon (who was sacrificed during the AIG incident) could become Ajit Jain's successor.
"Berkshire acquired Alleghany at 7 times earnings, and it will become even better within the Berkshire system."
Bloomstran argues that Berkshire's durability stems from its capital structure and culture, not individual capabilities, and thus succession risk is overestimated.
The "Flywheel" Effect of the Capital Structure: Berkshire holds $900 billion in assets, with the following liabilities on the right side of the balance sheet:
Bloomstran concludes: "The right side of this giant conglomerate has no net cost of capital."
Cultural Mechanisms:
Bloomstran believes that Greg Abel will succeed Buffett well, but the board's role is even more critical—"protecting the culture and preventing activist investors from intervening." He predicts Berkshire will continue to compound at a return on equity of over 10%, with stock returns matching the ROE.
On Valuation: Berkshire currently has a market cap of approximately $600 billion, corresponding to Bloomstran's estimated economic profit of $50 billion, a P/E ratio of about 12 times, and an earnings yield of 8.3%. "You buy at an 8.3% yield, and Berkshire will reinvest retained earnings at 10-12%—while the 30-year Treasury yield is only 2%."
| Position | Guest's View | Key Data |
|---|---|---|
| Berkshire Hathaway | Bullish (core holding) | Annual profit ~$50B, market cap ~$600B, P/E 12x |
| GEICO | Bullish | Annual premiums $40B, second-largest auto insurer in the US |
| Berkshire Hathaway Energy (BHE) | Bullish (growth engine) | Equity capital $40B, annual profit $4B, largest renewable energy producer in the US |
| BNSF Railway | Bullish | Annual profit $7B, valuation $120-130B |
| Alleghany | Bullish (acquisition target) | Acquisition price $11.6B, P/E 7x, to benefit from Berkshire's system |
| Apple | Bullish (holding) | Berkshire invested over $100B, viewed as a consumer goods company rather than a tech company |
| Occidental Petroleum (Oxy) | Bullish (holding) | $10B in preferred shares (8% coupon) + common stock (bought at ~$50+/share) |
| Chevron | Bullish (holding) | Heavily bought in Q1 2022 |
| Coca-Cola | Neutral (historical holding) | Berkshire once earned 13x, P/E 50x in 1998 |
| Precision Castparts | Risk warning (mistake) | Written down by $10B, one of Berkshire's biggest mistakes |
| Munich Re / Swiss Re | Risk warning (competitors) | Poor underwriting discipline, frequent capital increases needed |
1. "For every $1 of capital, the global reinsurance industry writes $1 of premiums; for every $1 of capital, Berkshire writes only $0.07 of premiums." — Bloomstran uses data to show that Berkshire's underwriting discipline is 14 times the industry average, which is the fundamental source of its float advantage.
2. "The market's biggest misunderstanding of Buffett is focusing too much on 'what to buy' while ignoring 'what money to use to buy it.'" — Bloomstran argues that float and capital structure are more critical than stock-picking ability, and Berkshire's success is essentially a success of capital sources.
3. "You buy Berkshire at an 8.3% yield, and Berkshire reinvests retained earnings at 10-12% — while the 30-year Treasury yield is only 2%." — Bloomstran uses a bond analogy to illustrate Berkshire's compounding advantage: the purchase yield exceeds the reinvestment yield, and the reinvestment yield also exceeds the market average.
4. "Berkshire is the only insurance company that can invest most of its float in stocks; other insurers can only invest in bonds." — Bloomstran points out that this 3-6 percentage point annualized return difference leads to exponential balance sheet divergence over decades.
5. "There is no net cost of capital on the right side of this giant conglomerate's balance sheet." — Bloomstran calculates that Berkshire's $150 billion in float and $3 billion in insurance underwriting profit fully cover the interest on its $110 billion in debt, making its capital structure extremely efficient.
6. "Alleghany will become better within the Berkshire system — same asset, different owner, different value." — Bloomstran uses Alleghany as an example to show that Berkshire's float and capital advantages can immediately enhance the value of acquired assets (e.g., shifting bond investments to stock investments, earning an extra $600 million annually).
7. "Berkshire Hathaway Energy's profit will grow from $4 billion to $8 billion over the next 7-10 years, surpassing the railroad in scale." — Bloomstran believes that renewable energy investments and grid construction provide a long-term capital expenditure runway, making this Berkshire's most important future growth engine.
8. "Berkshire's management earns an annual salary of $100,000, has never been granted stock options, and the board earns $2,000 a year — you come here not to get rich, but to protect the culture." — Bloomstran uses the compensation structure to illustrate the uniqueness of Berkshire's culture: no short-term incentives, no agency problems, and all decisions are based on long-term value.