RDVT
−$345.7K
6,000 sh @ $58
Dubner Derek
Director, Chief Executive Officer, CEO, Co-Chief Executive Officer · SEC CIK 1636349Advertisement
Buy track record
How this insider's open-market purchases have performed56%
of buys now in profit
5 up · 4 down
Avg return since buy+373.2%
Median return+629.7%
Best trade+776.1%
Worst trade−25.5%
Buys scored9 (+1 n/a)
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
−0.0%
33% won · 9 trades
After 3 months
+16.5%
33% won · 9 trades
After 6 months
+19.5%
44% won · 9 trades
After 12 months
+55.0%
56% won · 9 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 28, 2019 | RDVT | $7 | $20.3K | +1.8% | +11.2% | +84.5% | +87.6% | +165.5% | +725.3% | |
| Mar 8, 2019 | RDVT | $7 | $14.2K | +1.2% | +3.6% | +72.2% | +80.9% | +150.1% | +692.2% | |
| Sep 10, 2018 | RDVT | $6 | $13K | +1.2% | −4.4% | +19.6% | +9.0% | +98.4% | +776.1% | |
| Sep 6, 2018 | RDVT | $8 | $7.6K | +0.6% | −16.8% | −4.1% | −3.8% | +75.0% | +629.7% | |
| Jun 15, 2018 | RDVT | $5 | $50K | +6.5% | +6.4% | −24.1% | −6.9% | +60.5% | +637.5% | |
| Dec 14, 2017 | COGT | $4 | $3.7K | +0.2% | +0.0% | +0.0% | +8.6% | −54.5% | −25.5% | |
| Mar 22, 2017 | COGT | $3 | $3.4K | +0.3% | +0.0% | +0.0% | +0.0% | +0.0% | −25.5% | |
| Mar 14, 2017 | COGT | $4 | $3.6K | +0.3% | +0.0% | +0.0% | +0.0% | +0.0% | −25.5% | |
| Nov 7, 2016 | COGT | $4 | $11K | +6.1% | +0.0% | +0.0% | +0.0% | +0.0% | −25.5% |
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 9 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$163.9K
10 trades
Open-market sells
$2.68M
15 trades
Net flow
−$2.52M
Net selling
Total filings
70
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstRDVT
−$343.4K
6,000 sh @ $57
RDVT
−$293.1K
5,247 sh @ $56
RDVT
+$0
18,520 sh
RDVT
−$25.3K
440 sh @ $58
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RDVT
−$72.1K
1,271 sh @ $57
RDVT
−$38.3K
660 sh @ $58
RDVT
−$198.8K
3,439 sh @ $58
RDVT
−$126.3K
2,184 sh @ $58
RDVT
−$43.1K
733 sh @ $59
RDVT
−$364K
6,273 sh @ $58
RDVT
−$503K
9,379 sh @ $54
RDVT
−$267.9K
5,736 sh @ $47
RDVT
−$194.2K
4,264 sh @ $46
RDVT
+$0
13,334 sh
RDVT
−$245.3K
6,667 sh @ $37
RDVT
−$372.5K
10,000 sh @ $37
RDVT
+$0
31,500 sh
RDVT
+$0
13,333 sh
RDVT
−$200.5K
6,667 sh @ $30
RDVT
+$0
10,833 sh
RDVT
−$154.1K
5,417 sh @ $28
RDVT
+$0
40,000 sh
RDVT
+$0
23,334 sh
RDVT
−$200.6K
9,882 sh @ $20
RDVT
+$0
10,833 sh
RDVT
−$90.1K
4,588 sh @ $20
RDVT
+$0
10,000 sh
RDVT
−$71.6K
4,235 sh @ $17
RDVT
+$0
40,000 sh
Frequently asked questions
How is Dubner Derek'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 Dubner Derek'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.