MarketPeel
Insider Trading Intelligence
DH

David D. Harrison

NOV
DIRECTOR · NOV INC. · CIK 0001189046
FILING MIX · LIFETIME78%/22%
BUYS
7
SELLS
2
TOTAL VALUE
$81.7K
COMPANIES
1
ACTIVE SINCE
May 2020
HOLDINGS NOW
136,357
AVG SELL PX
$16.68
TRADE KIND
SHOWING 9 / 9
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 1 pending
Forward-return performance of every backtestable P/S trade by David D. Harrison, 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%-0.98%+1.21%-2.18%-2.18%
14d2+50.00%+0.41%+0.66%-0.25%-0.25%
30d2+100.00%-9.18%-4.54%-4.64%-4.64%
60d2+50.00%+13.87%-0.32%+14.18%+14.18%
90d2+50.00%+14.04%+3.58%+10.46%+10.46%
180d2+50.00%+3.12%+1.11%+2.01%+2.01%
1y2+50.00%+7.86%+13.44%-5.58%-5.58%
2y2(1 pending)+0.00%+4.71%+46.54%-41.83%-41.83%
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
NOV · 136,357 shares · as of May 20, 2026
034,08968,179102,268136,357202120222023202420252026SHARES 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 · 7 buys / 2 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NOV
NOV INC.
PURCHASEGRANT
Stock grant
9,457136,357May 20, 2026May 22, 2026View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
15,949126,900May 20, 2025May 22, 2025View →
NOV
NOV INC.
SALE
1,784$16.10$28.7K110,951Nov 20, 2024Nov 21, 2024View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
9,550112,735May 15, 2024May 16, 2024View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
12,000103,185May 17, 2023May 18, 2023View →
NOV
NOV INC.
SALE
3,112$17.01$52.9K91,185Sep 1, 2022Sep 1, 2022View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
8,47394,297May 24, 2022May 26, 2022View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
9,81985,824May 19, 2021May 20, 2021View →
NOV
NOV INC.
PURCHASEGRANT
Stock grant
12,46276,005May 20, 2020May 21, 2020View →
Other insiders · NOV
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About this filer
CIK 0001189046
ROLE
Director
PRIMARY
NOV
COMPANIES
1
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001189046DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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