VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.4M of their own money on 11,744 shares at $205.
+$2.4M
11,744 sh @ $205
BUFFETT WARREN E
Director, 10% Owner, Chairman and CEO · SEC CIK 315090Advertisement
Buy track record
How this insider's open-market purchases have performed100%
of buys now in profit
60 up · 0 down
Avg return since buy+39.0%
Median return+40.2%
Best trade+48.4%
Worst trade+23.0%
Buys scored60
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
+6.2%
98% won · 60 trades
After 3 months
+16.4%
92% won · 60 trades
After 6 months
+28.9%
80% won · 60 trades
After 12 months
+16.1%
84% won · 56 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% | — | +33.5% | |
| Aug 1, 2025 | SIRI | $21 | $40.57M | +1.6% | +10.5% | +4.7% | −1.4% | — | +36.3% | |
| Jul 31, 2025 | SIRI | $21 | $41.62M | +1.7% | +10.8% | +4.0% | −1.1% | — | +36.7% | |
| Jul 31, 2025 | SIRI | $21 | $1.83M | +0.1% | +10.8% | +4.0% | −1.1% | — | +36.7% | |
| Feb 7, 2025 | OXY | $47 | $35.72M | +0.3% | +1.0% | −16.2% | −5.8% | +1.9% | +24.7% | |
| Feb 3, 2025 | SIRI | $23 | $10.17M | +0.4% | +1.2% | −10.4% | −7.8% | −11.9% | +23.1% | |
| Feb 3, 2025 | SIRI | $24 | $6.83M | +0.2% | +1.2% | −10.4% | −7.8% | −11.9% | +23.1% | |
| Jan 31, 2025 | SIRI | $24 | $19.84M | +0.7% | +1.2% | −17.9% | −10.0% | −11.0% | +23.0% | |
| Jan 30, 2025 | SIRI | $23 | $17.12M | +0.6% | +5.1% | −6.3% | +1.5% | −7.6% | +27.8% | |
| Jan 3, 2025 | VRSN | $205 | $2.4M | +0.1% | +5.1% | +24.2% | +39.6% | +17.4% | +38.2% | |
| Jan 3, 2025 | VRSN | $205 | $164K | — | +5.1% | +24.2% | +39.6% | +17.4% | +38.2% | |
| Jan 2, 2025 | VRSN | $205 | $1.2M | — | +5.3% | +24.6% | +37.9% | +18.3% | +38.5% | |
| Dec 31, 2024 | VRSN | $205 | $332K | — | +3.9% | +22.7% | +40.1% | +18.4% | +37.3% | |
| Dec 30, 2024 | VRSN | $203 | $1.02M | — | +4.3% | +23.8% | +41.2% | +20.9% | +38.5% | |
| Dec 30, 2024 | VRSN | $204 | $2.4M | +0.1% | +4.3% | +23.8% | +41.2% | +20.9% | +38.5% | |
| Dec 30, 2024 | VRSN | $205 | $2M | +0.1% | +4.3% | +23.8% | +41.2% | +20.9% | +38.5% | |
| Dec 27, 2024 | VRSN | $203 | $1.34M | +0.1% | +4.3% | +24.9% | +41.4% | +21.2% | +39.3% | |
| Dec 27, 2024 | VRSN | $204 | $3.65M | +0.1% | +4.3% | +24.9% | +41.4% | +21.2% | +39.3% | |
| Dec 27, 2024 | VRSN | $204 | $970.1K | — | +4.3% | +24.9% | +41.4% | +21.2% | +39.3% | |
| Dec 27, 2024 | VRSN | $205 | $513.1K | — | +4.3% | +24.9% | +41.4% | +21.2% | +39.3% | |
| Dec 27, 2024 | VRSN | $206 | $62.8K | — | +4.3% | +24.9% | +41.4% | +21.2% | +39.3% | |
| Dec 26, 2024 | VRSN | $202 | $1.36M | +0.1% | +4.9% | +22.4% | +40.1% | +22.6% | +40.2% | |
| Dec 26, 2024 | VRSN | $203 | $2.24M | +0.1% | +4.9% | +22.4% | +40.1% | +22.6% | +40.2% | |
| Dec 26, 2024 | VRSN | $203 | $21.5K | — | +4.9% | +22.4% | +40.1% | +22.6% | +40.2% | |
| Dec 24, 2024 | VRSN | $200 | $648.5K | — | +4.6% | +21.8% | +41.9% | +23.0% | +41.0% | |
| Dec 24, 2024 | VRSN | $201 | $2.31M | +0.1% | +4.6% | +21.8% | +41.9% | +23.0% | +41.0% | |
| Dec 24, 2024 | VRSN | $202 | $40.3K | — | +4.6% | +21.8% | +41.9% | +23.0% | +41.0% | |
| Dec 23, 2024 | VRSN | $198 | $2.09M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +42.1% | |
| Dec 23, 2024 | VRSN | $199 | $1.89M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +42.1% | |
| Dec 23, 2024 | VRSN | $200 | $2.89M | +0.1% | +3.3% | +22.7% | +41.9% | +23.6% | +42.1% | |
| Dec 23, 2024 | VRSN | $201 | $40.2K | — | +3.3% | +22.7% | +41.9% | +23.6% | +42.1% | |
| Dec 20, 2024 | VRSN | $195 | $1.21M | — | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $197 | $63K | — | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $198 | $213.2K | — | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $199 | $14.59M | +0.6% | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $199 | $1.91M | +0.1% | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $200 | $633K | — | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 20, 2024 | VRSN | $201 | $20.1K | — | +5.8% | +21.9% | +41.6% | +24.9% | +42.9% | |
| Dec 19, 2024 | VRSN | $191 | $210.2K | — | +8.8% | +25.2% | +45.5% | +27.3% | +46.9% | |
| Dec 19, 2024 | VRSN | $193 | $1.72M | +0.1% | +8.8% | +25.2% | +45.5% | +27.3% | +46.9% | |
| Dec 19, 2024 | VRSN | $194 | $10.72M | +0.4% | +8.8% | +25.2% | +45.5% | +27.3% | +46.9% | |
| Dec 19, 2024 | VRSN | $194 | $368.5K | — | +8.8% | +25.2% | +45.5% | +27.3% | +46.9% | |
| Dec 19, 2024 | SIRI | $21 | $42.49M | +1.8% | +7.8% | +13.3% | +8.1% | +5.9% | +43.6% | |
| Dec 19, 2024 | SIRI | $22 | $674.1K | — | +7.8% | +13.3% | +8.1% | +5.9% | +43.6% | |
| Dec 19, 2024 | OXY | $46 | $153.59M | +1.3% | +11.4% | +6.3% | +1.7% | −10.7% | +28.6% | |
| Dec 19, 2024 | OXY | $46 | $11.19M | +0.1% | +11.4% | +6.3% | +1.7% | −10.7% | +28.6% | |
| Dec 18, 2024 | VRSN | $191 | $10.24M | +0.4% | +9.9% | +25.3% | +47.3% | +28.8% | +48.4% | |
| Dec 18, 2024 | VRSN | $193 | $496.1K | — | +9.9% | +25.3% | +47.3% | +28.8% | +48.4% | |
| Dec 18, 2024 | VRSN | $194 | $914.8K | — | +9.9% | +25.3% | +47.3% | +28.8% | +48.4% | |
| Dec 18, 2024 | VRSN | $195 | $3.7M | +0.1% | +9.9% | +25.3% | +47.3% | +28.8% | +48.4% | |
| Dec 18, 2024 | VRSN | $195 | $820.2K | — | +9.9% | +25.3% | +47.3% | +28.8% | +48.4% | |
| Dec 18, 2024 | SIRI | $22 | $20.09M | +0.8% | +3.2% | +6.3% | +2.2% | +3.6% | +37.3% | |
| Dec 18, 2024 | SIRI | $22 | $12.12M | +0.5% | +3.2% | +6.3% | +2.2% | +3.6% | +37.3% | |
| Dec 18, 2024 | OXY | $46 | $112.2M | +0.9% | +9.8% | +4.1% | −0.4% | −11.8% | +26.7% | |
| Dec 18, 2024 | OXY | $47 | $17.57M | +0.1% | +9.8% | +4.1% | −0.4% | −11.8% | +26.7% | |
| Dec 17, 2024 | VRSN | $195 | $1.2M | — | +7.4% | +22.2% | +45.9% | +25.6% | +45.6% | |
| Dec 17, 2024 | VRSN | $195 | $14.85M | +0.6% | +7.4% | +22.2% | +45.9% | +25.6% | +45.6% | |
| Dec 17, 2024 | VRSN | $196 | $156K | — | +7.4% | +22.2% | +45.9% | +25.6% | +45.6% | |
| Dec 17, 2024 | SIRI | $22 | $31.86M | +1.3% | −0.3% | +4.3% | −1.8% | +2.2% | +32.2% | |
| Dec 17, 2024 | OXY | $46 | $114.59M | +1.0% | +11.6% | +2.0% | −0.2% | −10.8% | +25.3% |
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 60 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$995.72M
70 trades
Open-market sells
$5.94B
62 trades
Net flow
−$4.95B
Net selling
Total filings
145
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstVRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $164K of their own money on 800 shares at $205.
+$164K
800 sh @ $205
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.2M of their own money on 5,879 shares at $205.
+$1.2M
5,879 sh @ $205
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $332K of their own money on 1,621 shares at $205.
+$332K
1,621 sh @ $205
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.02M of their own money on 5,000 shares at $203.
+$1.02M
5,000 sh @ $203
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VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.4M of their own money on 11,730 shares at $204.
+$2.4M
11,730 sh @ $204
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2M of their own money on 9,741 shares at $205.
+$2M
9,741 sh @ $205
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.34M of their own money on 6,619 shares at $203.
+$1.34M
6,619 sh @ $203
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $3.65M of their own money on 17,932 shares at $204.
+$3.65M
17,932 sh @ $204
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $970.1K of their own money on 4,751 shares at $204.
+$970.1K
4,751 sh @ $204
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $513.1K of their own money on 2,498 shares at $205.
+$513.1K
2,498 sh @ $205
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $62.8K of their own money on 305 shares at $206.
+$62.8K
305 sh @ $206
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.36M of their own money on 6,745 shares at $202.
+$1.36M
6,745 sh @ $202
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.24M of their own money on 11,060 shares at $203.
+$2.24M
11,060 sh @ $203
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $21.5K of their own money on 106 shares at $203.
+$21.5K
106 sh @ $203
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $648.5K of their own money on 3,238 shares at $200.
+$648.5K
3,238 sh @ $200
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.31M of their own money on 11,483 shares at $201.
+$2.31M
11,483 sh @ $201
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $40.3K of their own money on 200 shares at $202.
+$40.3K
200 sh @ $202
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.09M of their own money on 10,527 shares at $198.
+$2.09M
10,527 sh @ $198
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.89M of their own money on 9,478 shares at $199.
+$1.89M
9,478 sh @ $199
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $2.89M of their own money on 14,461 shares at $200.
+$2.89M
14,461 sh @ $200
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $40.2K of their own money on 200 shares at $201.
+$40.2K
200 sh @ $201
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.21M of their own money on 6,200 shares at $195.
+$1.21M
6,200 sh @ $195
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $63K of their own money on 320 shares at $197.
+$63K
320 sh @ $197
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $213.2K of their own money on 1,079 shares at $198.
+$213.2K
1,079 sh @ $198
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $14.59M of their own money on 73,389 shares at $199, growing their stake 1%.
+$14.59M
73,389 sh @ $199
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $1.91M of their own money on 9,590 shares at $199.
+$1.91M
9,590 sh @ $199
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $633K of their own money on 3,159 shares at $200.
+$633K
3,159 sh @ $200
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $20.1K of their own money on 100 shares at $201.
+$20.1K
100 sh @ $201
VRSN
Berkshire Hathaway Inc, VRSN's 10% owner, spent $210.2K of their own money on 1,100 shares at $191.
+$210.2K
1,100 sh @ $191
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.