MarketPeel
Insider Trading Intelligence
TE

Thomas W. Erickson

DDD
DIRECTOR · 3D SYSTEMS CORP · CIK 0001120226
FILING MIX · LIFETIME100%/0%
BUYS
10
SELLS
0
TOTAL VALUE
$493.4K
COMPANIES
1
ACTIVE SINCE
May 2020
HOLDINGS NOW
395,178
AVG SELL PX
TRADE KIND
SHOWING 10 / 10
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Thomas W. Erickson, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+100.00%+10.57%+0.37%+10.20%+10.20%
14d2+100.00%+15.09%+1.38%+13.71%+13.71%
30d2+100.00%+29.39%+4.96%+24.43%+24.43%
60d2+50.00%-0.19%+7.22%-7.41%-7.41%
90d2+50.00%+4.07%+10.86%-6.79%-6.79%
180d2+0.00%-27.86%+17.50%-45.36%-45.36%
1y2+0.00%-39.02%+32.72%-71.74%-71.74%
2y2+0.00%-60.85%+49.61%-110.47%-110.47%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
DDD · 395,178 shares · as of May 14, 2026
098,795197,589296,384395,178202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 10 buys / 0 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
45,731395,178May 14, 2026May 29, 2026View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
29,069349,447Jun 11, 2025Jun 13, 2025View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
63,084320,378Aug 30, 2024Sep 4, 2024View →
DDD
3D SYSTEMS CORP
PURCHASE
50,000$5.30$265.0K257,294Nov 28, 2023Nov 29, 2023View →
DDD
3D SYSTEMS CORP
PURCHASE
50,000$4.57$228.4K207,294Nov 21, 2023Nov 22, 2023View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
18,094157,294May 16, 2023May 18, 2023View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
15,015139,200May 24, 2022May 26, 2022View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
6,007124,185May 18, 2021May 19, 2021View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
15,209118,178Sep 21, 2020Sep 22, 2020View →
DDD
3D SYSTEMS CORP
PURCHASEGRANT
Stock grant
10,000102,969May 19, 2020Jun 8, 2020View →
Other insiders · DDD
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About this filer
CIK 0001120226
ROLE
Director
PRIMARY
DDD
COMPANIES
1
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001120226DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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