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Benjamin Bielak

ISPC
CHIEF INFORMATION OFFICER · ISPECIMEN INC. · CIK 0001857054
FILING MIX · LIFETIME67%/33%
BUYS
2
SELLS
1
TOTAL VALUE
$68.7K
COMPANIES
1
ACTIVE SINCE
Jun 2022
HOLDINGS NOW
84,348
AVG SELL PX
$2.36
TRADE KIND
SHOWING 3 / 3
Trades · vs SPY
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Performance · forward returns vs SPY
1 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Benjamin Bielak, 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
7d1+0.00%-6.94%-3.87%-3.07%-3.07%
14d1+0.00%-15.28%-4.51%-10.76%-10.76%
30d1+0.00%-30.56%-3.85%-26.71%-26.71%
60d1+0.00%-23.61%-1.91%-21.70%-21.70%
90d1+0.00%-30.56%+4.84%-35.40%-35.40%
180d1+0.00%-43.06%+15.62%-58.67%-58.67%
1y1+0.00%-73.19%+26.54%-99.73%-99.73%
2y1+0.00%-86.46%+49.42%-135.88%-135.88%
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
ISPC · 84,348 shares · as of Sep 14, 2023
021,08742,17463,26184,3482023SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2022
2022
2023
2023
2023
FLOW · 2 buys / 1 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ISPC
ISPECIMEN INC.
PURCHASE
Chief Info Officer & Secretary
18,000$0.72$13.0K84,348Sep 14, 2023Sep 15, 2023View →
ISPC
ISPECIMEN INC.
PURCHASEGRANT
Stock grant
30,000$1.61$48.3K57,952Nov 1, 2022Nov 4, 2022View →
ISPC
ISPECIMEN INC.
SALE
Chief Information Officer
3,148$2.36$7.4K66,348Jun 22, 2022Jun 24, 2022View →
Other insiders · ISPC
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About this filer
CIK 0001857054
ROLE
Chief Information Officer
PRIMARY
ISPC
COMPANIES
1
ACTIVE SINCE
Jun 2022
MARKETPEEL · /INSIDER/0001857054DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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