Berkshire Hathaway Doubled Its Buyback to $9.6 Billion — and Became AI Capex's Buyer of Last Resort

• Insurance float is the engine: $178.5 billion at September 30, up $2.1 billion since year-end 2025, with underwriting profit down 43% and GEICO's pretax result down 45%.
• Treasury bills are the bid: Berkshire's insurance businesses held $230.9 billion of cash and bills, including $15.4 billion of purchases not yet settled — a price-setter at the front end of the curve.
• Operations are the fuel: BNSF produced $1,729 million of segment operating earnings in the quarter and Berkshire Hathaway Energy $1,612 million, with manufacturing, service and retailing adding $4,042 million.

• Alphabet's data centers are the destination: Berkshire supplied roughly a quarter of the equity Alphabet raised in 2026 to date, into a capex program running at about a $176 billion annualized pace.
• The order book behind that spending is Nvidia, which posted $96.2 billion of revenue and $59.7 billion of net income in the July quarter, SK hynix with 104.6 trillion won of quarterly revenue, and Samsung Electronics with 107.4 trillion won of quarterly operating profit.
• Test equipment is the cleanest read on new capacity: Advantest reported a record September quarter of 477.7 billion yen of revenue and 266.6 billion yen of operating profit, and raised full-year operating profit guidance to 967 billion yen at a 49.4% margin.
• Berkshire's own five largest equity holdings were unchanged in the third quarter, with Alphabet among them — so the June placement looks like a deliberate private financing decision rather than the start of an open-ended accumulation.

• Korea took the worst of it: the KOSPI fell 6.02% to 5,059.69 on November 6 with circuit breakers triggered, SK hynix closed at 1,132,000 won after a 10.4% single-session drop, and the two Korean leaders sit roughly 19% and 13% below their pre-election levels.
• Japan followed, with the Nikkei down 5.9% into a bear market, semiconductors and SoftBank Group leading the decline while Advantest closed 5% lower.
• The demand data contradicted the tape: SK hynix reported record operating profit of 83.3 trillion won, up 632% year over year and ahead of the 76.7 trillion won consensus, and Samsung Electronics reported 107.4 trillion won of operating profit, up 783%, while planning a 62% increase in 2026 chip capital spending.
• The macro driver cut both ways: October payrolls of 165,000 and 4.1% unemployment pushed futures to a 76.8% chance of a rate hike, lifting yields on Berkshire's bill book while compressing the multiples of long-duration AI winners.

• Float is growing slower than the buyback: $2.1 billion of float added in nine months against $14.4 billion of stock retired, so the capital base behind the bid is being harvested faster than it is replenished.
• Berkshire's claims side is the problem, not its pricing: GEICO's pretax profit fell about 45% on higher accident losses and advertising spending, and underwriting profit fell 43%.
• The floor under the bid is a stated condition: Berkshire has said it will not repurchase stock if cash and Treasury bills would fall below $30 billion, which on a $377 billion balance sheet is not a live constraint.
• The same cycle is showing up downstream in brokerage: Aon's operating margin narrowed to 19.7% from 20.4% even as revenue grew, the early signature of a softening property-casualty pricing market.

• Days to quarters — the October pace: roughly $2 billion of October buying is about 60% of the third quarter's monthly run rate, and the full-year results in February will show whether the Q3 burst was quarter-end timing or a new policy.
• Days to quarters — the 13F: Berkshire's five largest equity holdings were unchanged in the third quarter, and the November filing will reveal whether the June Alphabet placement was the start of a position or a one-off.
• Days to quarters — the policy calendar: new congressional control makes data-center rules the swing factor for 2027 capex, and the January guidance cycle from Nvidia and SK hynix is where the market tests whether the selloff was political or functional.
• Days to quarters — remaining issuance: Alphabet has $27.6 billion of its $40 billion at-the-market program left, and every share sold near these prices either validates the Berkshire bid or hands the opportunity to someone else.
• One to three years — the arithmetic of the bid: a 0.9% quarterly reduction in share count is roughly 3.5% a year, enough to offset a mid-single-digit decline in operating earnings but not enough to manufacture growth on its own.
• One to three years — who funds AI capex next: Berkshire's $10 billion private placement and $12.4 billion of at-the-market issuance mean the buildout is being financed with equity sold into a frightened market, and a Berkshire that keeps absorbing that supply is underwriting the cycle, not fleeing it.
• One to three years — the insurance cycle: float growth of $2.1 billion in nine months against a 43% drop in underwriting profit is the trend to watch, because a shrinking claims result makes the bid a balance-sheet decision rather than a surplus-cash decision.
• One to three years — the macro variable: futures priced a 76.8% chance of a rate hike on November 6, and if the Fed holds or cuts, the $2.7 billion of quarterly insurance investment income shrinks while the AI complex's multiple problem stays.

The limited information that follows in this press release is not adequate for making an informed investment judgment.