CompetitorsNarrow moat
Berkshire Hathaway (BRK.B) — moat facet
Nothing competes with Berkshire as a whole — competition happens one subsidiary at a time, and most of its disadvantages are disciplines it imposed on itself.
Nothing competes with Berkshire Hathaway. There is no other company assembled this way, and no rival conglomerate bidding against it for the whole. Competition happens one subsidiary at a time, which is why this aspect looks so different from every other company's in this collection: four contests in four unrelated industries, sharing only a parent.
In insurance, GEICO has slipped to third in private auto as Progressive overtook State Farm for the top position1. In railroads, Union Pacific's $85 billion combination with Norfolk Southern would create a network BNSF says would control half of American rail freight, and BNSF is campaigning against it publicly2 — an unusually loud posture for a Berkshire company. In acquisitions, private equity bids against Berkshire for the same private businesses with cheaper money and no intention of holding forever. And for the shareholder's dollar, Berkshire competes with the low-cost index fund its own chairman spent decades recommending.
The pattern worth noticing is that Berkshire's competitive disadvantages are mostly self-imposed. It will not overpay for acquisitions, will not price insurance below its estimate of risk, and will not chase a merger for defensive reasons. Those disciplines cost it share in every one of these markets, and they are the same disciplines that produced the balance sheet.
Watch operating earnings rather than any individual subsidiary's position. Berkshire has never competed to be largest; it competes to earn well, and the consolidated figure is the only place that shows up.
Berkshire's competitive position is unchanged in character and mildly worse in detail. GEICO slipped to third in private auto, the railroad faces a merger that would reshape its industry, and the acquisition market is more crowded with financial buyers than ever. None of that threatens the enterprise, because none of these contests is existential to a company this diversified — but none of them is being won, either.
Each subsidiary faces its own rival; the sum is what Berkshire earns against all of them together.
- Third-party estimateGEICO has slipped to about 12% of US private auto as Progressive passed State Farm for the top position.NAIC auto insurance market share data and industry reporting — State Farm holds roughly 19% of the US private auto market, Progressive about 17%, GEICO about 12%, Allstate about 10% and USAA about 6%; Progressive added 187 basis points of share in 2025 and recently passed State Farm to become the largest private auto insurer on a trailing-twelve-month basis — 2025-2026 · publ. 2026 · source ↗
- Third-party estimateUnion Pacific's $85B combination with Norfolk Southern would, per BNSF, control half of US rail freight; BNSF is campaigning against it publicly.Rail industry reporting — Union Pacific announced an $85 billion end-to-end combination with Norfolk Southern with virtually no route overlap; BNSF's chief executive states the merged network would control half of all US rail freight; BNSF publicly opposes the deal, urging shippers to object and arguing it would reduce competition, raise rates and degrade service; BNSF and CSX have been reported to be weighing their own combination in response — 2026 · publ. 2026 · source ↗
- Berkshire Hathaway Form 10-K filings — Business & Risk Factors (SEC EDGAR)
- NAIC auto insurance market share data, 2026
- BNSF's case against the Union Pacific-Norfolk Southern merger (FreightWaves)