tradeval
BRK-B

Who Berkshire Hathaway buys from and sells to

Conglomerate: GEICO and reinsurance, BNSF railroad, BHE utilities, manufacturers, OxyChem, and a stock portfolio.

Sells to 4

Where the chain could break

  • PacifiCorp wildfire lawsuits in Oregon and California
  • Auto insurance underwriting cycle drives GEICO profits
  • Equity portfolio concentrated in a few names (Apple, AmEx, Bank of America)

Competes with

Mapped by hand from filings and company reporting, as of October 2026. It shows the relationships that matter most, not every contract: most are never disclosed, and agreements change.

Sources (2)