MarketPeel
Insider Trading Intelligence
KM

Kathryn Mccarthy

SEIC
DIRECTOR · SEI INVESTMENTS CO · CIK 0001101310
FILING MIX · LIFETIME71%/29%
BUYS
17
SELLS
7
TOTAL VALUE
$5.83M
COMPANIES
1
ACTIVE SINCE
Dec 2020
HOLDINGS NOW
77,883
AVG SELL PX
$73.63
TRADE KIND
SHOWING 24 / 24
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 6 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Kathryn Mccarthy, 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
7d4+50.00%+0.03%+1.23%-1.21%-0.90%
14d4+50.00%-0.98%+0.21%-1.19%-1.35%
30d4+75.00%-1.36%+1.77%-2.35%-3.45%
60d4+66.67%-4.62%+3.00%-7.38%-7.28%
90d4(1 pending)+66.67%+0.49%+4.28%-3.79%-5.20%
180d4(1 pending)+33.33%+4.82%+8.93%-4.11%-3.67%
1y4(2 pending)+0.00%+7.82%+25.95%-18.13%-18.13%
2y4(2 pending)+0.00%+26.27%+29.72%-3.44%-3.44%
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
SEIC · 77,883 shares · as of May 4, 2026
021,97143,94265,91287,883202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 17 buys / 7 sellsCOVERAGE · 23 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SEIC
SEI INVESTMENTS CO
SALE
5,0000May 4, 2026May 5, 2026View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$49.63$248.2K82,883May 4, 2026May 5, 2026View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$49.63$248.2K87,883May 4, 2026May 5, 2026View →
SEIC
SEI INVESTMENTS CO
SALE
10,000$91.07$910.7K77,883May 4, 2026May 5, 2026View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
2,26677,907Dec 12, 2025Dec 16, 2025View →
SEIC
SEI INVESTMENTS CO
SALE
24$81.25$1.9K77,883Dec 5, 2025Dec 29, 2025View →
SEIC
SEI INVESTMENTS CO
PURCHASE
10,000$53.34$533.4K85,641Sep 29, 2025Sep 29, 2025View →
SEIC
SEI INVESTMENTS CO
SALE
5,0000Sep 29, 2025Sep 29, 2025View →
SEIC
SEI INVESTMENTS CO
SALE
10,000$85.66$856.6K75,641Sep 29, 2025Sep 29, 2025View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
2,17575,641Dec 12, 2024Dec 16, 2024View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
4,0004,000Dec 15, 2023Dec 19, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
1,00073,466Dec 15, 2023Dec 19, 2023View →
SEIC
SEI INVESTMENTS CO
SALE
10,000$60.58$605.8K72,466Sep 8, 2023Sep 11, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASE
10,000$40.64$406.4K82,466Sep 8, 2023Sep 11, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASE
10,0000Sep 8, 2023Sep 11, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
76672,466Dec 5, 2022Feb 28, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASEGRANT
Stock grant
3,7503,750Dec 5, 2022Feb 28, 2023View →
SEIC
SEI INVESTMENTS CO
PURCHASE
10,000$60.46$604.6K10,000Dec 10, 2021Dec 14, 2021View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$15.77$78.8K76,200Dec 9, 2020Dec 10, 2020View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$15.77$78.8K0Dec 9, 2020Dec 10, 2020View →
SEIC
SEI INVESTMENTS CO
SALE
9,500$56.35$535.3K71,700Dec 9, 2020Dec 10, 2020View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$15.77$78.8K5,000Dec 9, 2020Dec 10, 2020View →
SEIC
SEI INVESTMENTS CO
PURCHASE
5,000$15.77$78.8K81,200Dec 9, 2020Dec 10, 2020View →
SEIC
SEI INVESTMENTS CO
PURCHASE
10,000$56.54$565.4K10,000Dec 8, 2020Dec 10, 2020View →
Other insiders · SEIC
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About this filer
CIK 0001101310
ROLE
Director
PRIMARY
SEIC
COMPANIES
1
ACTIVE SINCE
Dec 2020
MARKETPEEL · /INSIDER/0001101310DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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