HAIR
+$0
3,910 sh
Dyckerhoff Stefan A
Director, 10% Owner, EVP Platform Systems Division, EVP Engineering, EVP and GM of IPG · SEC CIK 1484394Advertisement
Buy track record
How this insider's open-market purchases have performed50%
of buys now in profit
2 up · 2 down
Avg return since buy−14.8%
Median return−14.8%
Best trade+0.9%
Worst trade−30.5%
Buys scored4 (+5 n/a)
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
+0.0%
0% won · 4 trades
After 3 months
−4.7%
0% won · 4 trades
After 6 months
+0.0%
0% won · 4 trades
After 12 months
+0.9%
50% won · 4 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2017 | MATR | $4 | $742.8K | +24% | +0.0% | −9.4% | +0.0% | +1.9% | +0.9% | |
| Jun 1, 2017 | MATR | $4 | $3.3K | +4.3% | +0.0% | −9.4% | +0.0% | +1.9% | +0.9% | |
| Dec 3, 2013 | MATR | $4 | $880.8K | +10% | +0.0% | +0.0% | +0.0% | +0.0% | −30.5% | |
| Dec 3, 2013 | MATR | $4 | $14.9K | NEW | +0.0% | +0.0% | +0.0% | +0.0% | −30.5% |
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 4 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$5.91M
9 trades
Open-market sells
$66.46M
57 trades
Net flow
−$60.55M
Net selling
Total filings
84
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstHAIR
+$737.6K
105,369 sh @ $7
HAIR
+$6.6K
946 sh @ $7
MATR
Dyckerhoff Stefan A, MATR's 10% owner, spent $742.8K of their own money on 203,543 shares at $4, growing their stake 24%.
+$742.8K
203,543 sh @ $4
MATR
Dyckerhoff Stefan A, MATR's 10% owner, spent $3.3K of their own money on 902 shares at $4, growing their stake 4%.
+$3.3K
902 sh @ $4
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MATR
−$0
271,391 sh
YEXT
+$0
2,308 sh
MATR
+$0
17,333 sh
MATR
−$7.29M
1M sh @ $7
THLD
+$855K
417,050 sh @ $2
THLD
−$855K
226,657 sh @ $4
THLD
−$15.9K
3,960 sh @ $4
THLD
−$40.2K
10,028 sh @ $4
MATR
−$30K
5,853 sh @ $5
MATR
−$76K
14,847 sh @ $5
MATR
Dyckerhoff Stefan A, MATR's 10% owner, spent $880.8K of their own money on 225,846 shares at $4, growing their stake 10%.
+$880.8K
225,846 sh @ $4
MATR
Dyckerhoff Stefan A, MATR's 10% owner, spent $14.9K of their own money on 3,818 shares at $4, opening a brand-new position.
+$14.9K
3,818 sh @ $4
THLD
+$1.49M
801,952 sh @ $2
THLD
−$1.49M
260,592 sh @ $6
CRDC
Sutter Hill Ventures, CRDC's 10% owner, spent $1.03M of their own money on 981,736 shares at $1, growing their stake 40%.
+$1.03M
981,736 sh @ $1
CRDC
Dyckerhoff Stefan A, CRDC's 10% owner, spent $1.03M of their own money on 981,736 shares at $1, growing their stake 40%.
+$1.03M
981,736 sh @ $1
CRDC
Dyckerhoff Stefan A, CRDC's 10% owner, spent $19.4K of their own money on 18,433 shares at $1, opening a brand-new position.
+$19.4K
18,433 sh @ $1
JNPR
+$189K
7,500 sh @ $25
JNPR
−$326.8K
7,500 sh @ $44
Frequently asked questions
How is Dyckerhoff Stefan A'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 Dyckerhoff Stefan A'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.