Berkshire Hathaway Inc-cl B
$532.02+1.2%
+$262.4B
Net Activity
+116.70% total shares
Institutions Holding
4971
Popularity Rank
#9
Avg Weight
1.21%
Total Value
$486.3B
4971 institutions currently hold BRK-B, with 2245 net buyers and 2153 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
2153
Net Buying Institutions
2245
Top 5 by Value
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Across its top 20 institutional holders, BRK-B's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 13/100, avg. turnover score 29/100).
BRK-B ranks #9 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
BRK-B is a top-conviction position for Check Capital Management Inc/ca — at 68.0% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in BRK-B belongs to BlackRock, Inc., but the position matters far more to Check Capital Management Inc/ca, who has 68.0% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Assenagon Asset Management S.A. has added to its BRK-B position for two straight quarters, increasing it by $1.2B to reach $2.3B today.
Diesslin Group, Inc. has trimmed its BRK-B position for two straight quarters, cutting it by $25.8M while still holding $32.3M.
BRK-B is up 1.2% today, and institutions have been net buyers of $262.4B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
BRK-B posted net income of $85.8B over the trailing twelve months.
+$35.5B
Total Buy Value
$16.0B
Total Sell Value
2245
Net Buyers
2153
Net Sellers
BRK-B
Q2 2026
Top 5 Institutional Movers
BRK-B does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Warren E. Buffett | 13D/A | 2026-07-15 | 38.2% |
1
Filings (14d)
Berkshire Hathaway (BRK-B) filed this 8-K on August 8, 2026 to share its earnings release for the second quarter and first half ended June 30, 2026. The filing itself is just a formal notice that the press release was issued — the excerpt doesn't include the actual numbers. So this is a routine disclosure rather than a detailed report on the results.
View Full Filing (SEC EDGAR)084670702, 084656107, 084670207, 08467070 , 084670952, 84670702
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
5,106
Total reported value
$1.1T
Held by 5106 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,868
Total reported value
$1.5T
Held by 4868 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,789
Total reported value
$1.2T
Held by 4789 institutions — one of the most-tracked stocks on AlphaSMO
315
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Access BRK-B's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/BRK-BCLI
npx alphasmo stocks get BRK-B