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Berkshire Hathaway-B BRK.B

US equityMarket cap rank #14Insurance - Diversified
$507.02
−$0.15 (-0.03%)
Market open · Sep 24, 2:00 pm ET
After hours $510.00 +0.56%
Open$509.99
Prev close$507.17
Day range$506.71 – $510.00
Volume1.21M
Market cap$1.09T
P/E (TTM)12.8
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership52.5%+0.12 pts vs. prior quarter
Institutions holding5,645-19 vs. prior quarter
Insider trades (recent)3 buys / 3 sellsBalanced
Short interest0.58% of floatDays to cover 3.0 · as of 31 Aug 2026
Short-sale volume share3.1%5-day average of daily volume

Short-sale volume as % of daily volume

1%3%4%6%Aug '26Sep '26Sep '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$14.87M (9 inflow days, 11 outflow days).

Largest holders

  • Warren Buffett13.19%
  • Vanguard Capital Management, LLC6.11%
  • BlackRock5.69%
  • State Street Global Advisors3.56%
  • Geode Capital Management, LLC1.94%

By investor type

  • Mutual Fund40.50%
  • Individual/Insider13.40%
  • Public Company3.05%
  • Private Company2.92%
  • Government Pension Fund1.47%
  • Sovereign Wealth Fund1.19%
  • Hedge Fund1.15%
  • Family Office/Trust0.73%
Institutional holders5,645
Institutional ownership52.5%

Insider activity

Total transactions13
Bought3
Sold3

Short interest

Report dateShares short% of floatDays to cover
31 Aug 2026 12,347,326 0.6% 3.0
14 Aug 2026 11,068,550 0.5% 2.5
31 Jul 2026 12,455,328 0.6% 3.0
15 Jul 2026 13,030,468 0.6% 3.3
30 Jun 2026 12,987,527 0.6% 2.2
15 Jun 2026 12,490,426 0.6% 2.2
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