OXY
Berkshire Hathaway Inc, OXY's 10% owner, spent $112.2M of their own money on 2.43M shares at $46, growing their stake 1%.
+$112.2M
2.43M sh @ $46
BUFFETT WARREN E
Director, 10% Owner, See Remarks, Vice Chairman, Chairman and CEO · SEC CIK 1067983Advertisement
Buy track record
How this insider's open-market purchases have performed100%
of buys now in profit
58 up · 0 down
Avg return since buy+37.3%
Median return+38.2%
Best trade+45.9%
Worst trade+19.4%
Buys scored58 (+2 n/a)
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
+6.2%
100% won · 58 trades
After 3 months
+16.8%
91% won · 58 trades
After 6 months
+29.9%
83% won · 58 trades
After 12 months
+16.8%
85% won · 54 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 4, 2025 | SIRI | $22 | $22.43M | +0.8% | +10.5% | +2.3% | −1.7% | — | +34.4% | |
| Aug 1, 2025 | SIRI | $21 | $40.57M | +1.6% | +10.5% | +4.7% | −1.4% | — | +37.2% | |
| Jul 31, 2025 | SIRI | $21 | $41.62M | +1.7% | +10.8% | +4.0% | −1.1% | — | +37.6% | |
| Jul 31, 2025 | SIRI | $21 | $1.83M | +0.1% | +10.8% | +4.0% | −1.1% | — | +37.6% | |
| Feb 7, 2025 | OXY | $47 | $35.72M | +0.3% | +1.0% | −16.2% | −5.8% | +1.9% | +19.4% | |
| Feb 3, 2025 | SIRI | $23 | $10.17M | +0.4% | +1.2% | −10.4% | −7.8% | −11.9% | +23.9% | |
| Feb 3, 2025 | SIRI | $24 | $6.83M | +0.2% | +1.2% | −10.4% | −7.8% | −11.9% | +23.9% | |
| Jan 31, 2025 | SIRI | $24 | $19.84M | +0.7% | +1.2% | −17.9% | −10.0% | −11.0% | +23.8% | |
| Jan 30, 2025 | SIRI | $23 | $17.12M | +0.6% | +5.1% | −6.3% | +1.5% | −7.6% | +28.7% | |
| Jan 3, 2025 | VRSN | $205 | $2.4M | +0.1% | +5.1% | +24.2% | +39.6% | +17.4% | +35.8% | |
| Jan 3, 2025 | VRSN | $205 | $164K | — | +5.1% | +24.2% | +39.6% | +17.4% | +35.8% | |
| Jan 2, 2025 | VRSN | $205 | $1.2M | — | +5.3% | +24.6% | +37.9% | +18.3% | +36.2% | |
| Dec 31, 2024 | VRSN | $205 | $332K | — | +3.9% | +22.7% | +40.1% | +18.4% | +34.9% | |
| Dec 30, 2024 | VRSN | $203 | $1.02M | — | +4.3% | +23.8% | +41.2% | +20.9% | +36.2% | |
| Dec 30, 2024 | VRSN | $204 | $2.4M | +0.1% | +4.3% | +23.8% | +41.2% | +20.9% | +36.2% | |
| Dec 30, 2024 | VRSN | $205 | $2M | +0.1% | +4.3% | +23.8% | +41.2% | +20.9% | +36.2% | |
| Dec 27, 2024 | VRSN | $203 | $1.34M | +0.1% | +4.3% | +24.9% | +41.4% | +21.2% | +36.9% | |
| Dec 27, 2024 | VRSN | $204 | $3.65M | +0.1% | +4.3% | +24.9% | +41.4% | +21.2% | +36.9% | |
| Dec 27, 2024 | VRSN | $204 | $970.1K | — | +4.3% | +24.9% | +41.4% | +21.2% | +36.9% | |
| Dec 27, 2024 | VRSN | $205 | $513.1K | — | +4.3% | +24.9% | +41.4% | +21.2% | +36.9% | |
| Dec 27, 2024 | VRSN | $206 | $62.8K | — | +4.3% | +24.9% | +41.4% | +21.2% | +36.9% | |
| Dec 26, 2024 | VRSN | $202 | $1.36M | +0.1% | +4.9% | +22.4% | +40.1% | +22.6% | +37.7% | |
| Dec 26, 2024 | VRSN | $203 | $2.24M | +0.1% | +4.9% | +22.4% | +40.1% | +22.6% | +37.7% | |
| Dec 26, 2024 | VRSN | $203 | $21.5K | — | +4.9% | +22.4% | +40.1% | +22.6% | +37.7% | |
| Dec 24, 2024 | VRSN | $200 | $648.5K | — | +4.6% | +21.8% | +41.9% | +23.0% | +38.6% | |
| Dec 24, 2024 | VRSN | $201 | $2.31M | +0.1% | +4.6% | +21.8% | +41.9% | +23.0% | +38.6% | |
| Dec 24, 2024 | VRSN | $202 | $40.3K | — | +4.6% | +21.8% | +41.9% | +23.0% | +38.6% | |
| Dec 23, 2024 | VRSN | $198 | $2.09M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +39.7% | |
| Dec 23, 2024 | VRSN | $199 | $1.89M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +39.7% | |
| Dec 23, 2024 | VRSN | $200 | $2.89M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +39.7% | |
| Dec 23, 2024 | VRSN | $201 | $40.2K | — | +3.3% | +22.7% | +41.9% | +23.6% | +39.7% | |
| Dec 20, 2024 | VRSN | $195 | $1.21M | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $197 | $63K | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $198 | $213.2K | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $199 | $14.59M | +0.6% | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $199 | $1.91M | +0.1% | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $200 | $633K | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $201 | $20.1K | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 20, 2024 | VRSN | $197 | $63K | — | +5.8% | +21.9% | +41.6% | +24.9% | +40.4% | |
| Dec 19, 2024 | VRSN | $191 | $210.2K | — | +8.8% | +25.2% | +45.5% | +27.3% | +44.4% | |
| Dec 19, 2024 | VRSN | $193 | $1.72M | +0.1% | +8.8% | +25.2% | +45.5% | +27.3% | +44.4% | |
| Dec 19, 2024 | VRSN | $194 | $10.72M | +0.4% | +8.8% | +25.2% | +45.5% | +27.3% | +44.4% | |
| Dec 19, 2024 | VRSN | $194 | $368.5K | — | +8.8% | +25.2% | +45.5% | +27.3% | +44.4% | |
| Dec 19, 2024 | SIRI | $21 | $42.49M | +1.8% | +7.8% | +13.3% | +8.1% | +5.9% | +44.5% | |
| Dec 19, 2024 | SIRI | $22 | $674.1K | — | +7.8% | +13.3% | +8.1% | +5.9% | +44.5% | |
| Dec 19, 2024 | OXY | $46 | $153.59M | +1.3% | +11.4% | +6.3% | +1.7% | −10.7% | +23.1% | |
| Dec 19, 2024 | OXY | $46 | $11.19M | +0.1% | +11.4% | +6.3% | +1.7% | −10.7% | +23.1% | |
| Dec 18, 2024 | VRSN | $191 | $10.24M | +0.4% | +9.9% | +25.3% | +47.3% | +28.8% | +45.9% | |
| Dec 18, 2024 | VRSN | $193 | $496.1K | — | +9.9% | +25.3% | +47.3% | +28.8% | +45.9% | |
| Dec 18, 2024 | VRSN | $194 | $914.8K | — | +9.9% | +25.3% | +47.3% | +28.8% | +45.9% | |
| Dec 18, 2024 | VRSN | $195 | $3.7M | +0.1% | +9.9% | +25.3% | +47.3% | +28.8% | +45.9% | |
| Dec 18, 2024 | VRSN | $195 | $820.2K | — | +9.9% | +25.3% | +47.3% | +28.8% | +45.9% | |
| Dec 18, 2024 | SIRI | $22 | $20.09M | +0.8% | +3.2% | +6.3% | +2.2% | +3.6% | +38.2% | |
| Dec 18, 2024 | SIRI | $22 | $12.12M | +0.5% | +3.2% | +6.3% | +2.2% | +3.6% | +38.2% | |
| Dec 18, 2024 | OXY | $46 | $112.2M | +0.9% | +9.8% | +4.1% | −0.4% | −11.8% | +21.4% | |
| Dec 18, 2024 | OXY | $47 | $17.57M | +0.1% | +9.8% | +4.1% | −0.4% | −11.8% | +21.4% | |
| Dec 17, 2024 | VRSN | $195 | $1.2M | — | +7.4% | +22.2% | +45.9% | +25.6% | +43.1% | |
| Dec 17, 2024 | VRSN | $195 | $14.85M | +0.6% | +7.4% | +22.2% | +45.9% | +25.6% | +43.1% |
How this is calculated. We score only open-market purchases (SEC code
P) — the buys that carry real signal. Each trade's return is measured from the adjusted closing price on the purchase date to the latest close, accounting for stock splits and dividends. The 1M/3M/6M/12M columns show the same trade's return after each fixed holding period; a dash means that horizon hasn't elapsed yet or isn't priceable. Sales are excluded because insiders sell for many routine reasons. With only 58 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$996.03M
73 trades
Open-market sells
$5.95B
65 trades
Net flow
−$4.95B
Net selling
Total filings
157
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstOXY
Berkshire Hathaway Inc, OXY's 10% owner, spent $17.57M of their own money on 374,589 shares at $47.
+$17.57M
374,589 sh @ $47
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.2M of their own money on 6,160 shares at $195.
+$1.2M
6,160 sh @ $195
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $14.85M of their own money on 76,056 shares at $195, growing their stake 1%.
+$14.85M
76,056 sh @ $195
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $156K of their own money on 796 shares at $196.
+$156K
796 sh @ $196
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SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $31.86M of their own money on 1.44M shares at $22, growing their stake 1%.
+$31.86M
1.44M sh @ $22
OXY
Berkshire Hathaway Inc, OXY's 10% owner, spent $114.59M of their own money on 2.48M shares at $46, growing their stake 1%.
+$114.59M
2.48M sh @ $46
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $18.06M of their own money on 679,207 shares at $27, growing their stake 1%.
+$18.06M
679,207 sh @ $27
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $25.39M of their own money on 925,205 shares at $27, growing their stake 1%.
+$25.39M
925,205 sh @ $27
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $17.24M of their own money on 623,527 shares at $28, growing their stake 1%.
+$17.24M
623,527 sh @ $28
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $4.82M of their own money on 175,569 shares at $27.
+$4.82M
175,569 sh @ $27
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $28.09M of their own money on 1.04M shares at $27, growing their stake 1%.
+$28.09M
1.04M sh @ $27
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $9.23M of their own money on 342,133 shares at $27.
+$9.23M
342,133 sh @ $27
BAC
−$355.92M
8.37M sh @ $43
BAC
−$14.01M
324,360 sh @ $43
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $31.42M of their own money on 1.26M shares at $25, growing their stake 1%.
+$31.42M
1.26M sh @ $25
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $22.18M of their own money on 917,846 shares at $24, growing their stake 1%.
+$22.18M
917,846 sh @ $24
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $12.65M of their own money on 517,154 shares at $24.
+$12.65M
517,154 sh @ $24
BAC
−$64.45M
1.61M sh @ $40
SIRI
Berkshire Hathaway Inc, SIRI's 10% owner, spent $20.49M of their own money on 869,800 shares at $24, growing their stake 1%.
+$20.49M
869,800 sh @ $24
BAC
−$160.66M
4M sh @ $40
BAC
−$157.29M
3.93M sh @ $40
BAC
−$163.27M
4.08M sh @ $40
BAC
−$207.89M
5.19M sh @ $40
BAC
−$11.88M
302,604 sh @ $39
BAC
−$67.87M
1.72M sh @ $39
BAC
−$72.49M
1.84M sh @ $39
BAC
−$197.5M
4.99M sh @ $40
BAC
−$154.74M
3.92M sh @ $40
BAC
−$215.39M
5.46M sh @ $39
Frequently asked questions
How is BUFFETT WARREN E's win rate calculated?
We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.
Why are some buys not included in the score?
A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.
What do the 1M / 3M / 6M / 12M columns mean?
They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.
Does a high win rate mean I should copy this insider?
No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.
Where does this data come from?
Trades come from BUFFETT WARREN E's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.