MarketPeel
Insider Trading Intelligence
GG

Guy Gibson

NTRS
CO-PRESIDENT ASSET SERVICING · NORTHERN TRUST CORP · CIK 0002104487
FILING MIX · LIFETIME20%/80%
BUYS
1
SELLS
4
TOTAL VALUE
$1.10M
COMPANIES
1
ACTIVE SINCE
Feb 2026
HOLDINGS NOW
29,332
AVG SELL PX
$144.13
TRADE KIND
SHOWING 5 / 5
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 6 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Guy Gibson, 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+50.00%-1.88%-0.88%-1.00%-1.00%
14d2+50.00%-1.52%-0.99%-0.53%-0.53%
30d2+100.00%-2.96%-3.26%+0.30%+0.30%
60d2+0.00%+9.57%+3.05%+6.52%+6.52%
90d2+0.00%+15.66%+8.96%+4.05%+4.05%
180d2(2 pending)
1y2(2 pending)
2y2(2 pending)
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
NTRS · 29,332 shares · as of Mar 5, 2026
09,24518,49127,73636,981SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
FLOW · 1 buys / 4 sellsCOVERAGE · 1 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NTRS
NORTHERN TRUST CORP
SALE
Co-President Asset Servicing
3,009$142.39$428.5K29,332Mar 5, 2026Mar 6, 2026View →
NTRS
NORTHERN TRUST CORP
SALE
Co-President Asset Servicing
2,672$143.15$382.5K32,341Mar 1, 2026Mar 4, 2026View →
NTRS
NORTHERN TRUST CORP
SALE
Co-President Asset Servicing
1,043$147.43$153.8K35,013Feb 12, 2026Feb 13, 2026View →
NTRS
NORTHERN TRUST CORP
SALE
Co-President Asset Servicing
925$148.88$137.7K36,056Feb 5, 2026Feb 9, 2026View →
NTRS
NORTHERN TRUST CORP
PURCHASEGRANT
Stock grant
6,44936,981Feb 5, 2026Feb 9, 2026View →
Other insiders · NTRS
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About this filer
CIK 0002104487
ROLE
Co-President Asset Servicing
PRIMARY
NTRS
COMPANIES
1
ACTIVE SINCE
Feb 2026
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