Warren E Buffett
CIK 315090 · Chairman and CEO · last filed 2026-09-30
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
OXY.WS price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
STE 1440
OMAHA, NE 68131
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| LEN.B | 10%+ Owner | 26,034,436 | $82.38 | $2.14B | $53.88M | 1 | 2026-09-30 |
| BRK.B | Chairman and CEO | 12,001,162 | $579.01 | $6.95B | $0 | 38 | 2026-07-15 |
| BAC | 10%+ Owner | 766,629,822 | $50.59 | $38.78B | -$3.40B | 7 | 2024-10-17 |
| Liberty Media Corp (LSXMK) Delisted | 10%+ Owner | 4,999,007 | $22.29 | $111.43M | $1.14B | 25 | 2024-06-20 |
| OXY.WS | 10%+ Owner | 237,008,296 | $35.51 | $8.42B | $7.33B | 10 | 2023-12-13 |
| Liberty Media Corp (LSXMR) Delisted | 10%+ Owner | 35,692,115 | — | — | $168.31M | 3 | 2020-06-03 |
| PSX | 10%+ Owner | 80,689,892 | $256.32 | $20.68B | $1.20B | 13 | 2016-09-19 |
| DVA | 10%+ Owner | 38,441,170 | $180.09 | $6.92B | $645.42M | 13 | 2014-11-12 |
| MCO | 10%+ Owner | 29,923,326 | $508.18 | $15.21B | -$251.62M | 2 | 2010-09-14 |
| BURLINGTON NORTHERN SANTA FE, LLC (BNI) Delisted | 10%+ Owner | 69,089,029 | — | — | $202.22M | 7 | 2008-12-12 |
Recent Filings · Page 11 of 13
122 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2012-11-29 | DVA | Buy (P) | +679,249 | $73.50M | EDGAR |
| 2012-11-26 | DVA | Buy (P) | +412,050 | $45.48M | EDGAR |
| 2012-11-13 | DVA | Buy (P) | +548,823 | $61.55M | EDGAR |
| 2012-11-07 | DVA | Buy (P) | +139,491 | $15.63M | EDGAR |
| 2012-10-12 | DVA | Buy (P) | +217,597 | $23.88M | EDGAR |
| 2012-10-11 | DVA | Buy (P) | +67,946 | $7.32M | EDGAR |
| 2012-10-01 | DVA | Buy (P) | +282,403 | $28.81M | EDGAR |
| 2012-07-09 | BRK.B | Gift (G) | −22,382,949 | $0 | EDGAR |
| 2011-07-07 | BRK.B | Gift (G) | −23,406,056 | $0 | EDGAR |
| 2010-09-14 | MCO | Sell (S) | −1,350,550 | -$33.98M | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.