MarketPeel
Insider Trading Intelligence
GM

Gary Stephen May

LDOS
DIRECTOR · LEIDOS HOLDINGS, INC. · CIK 0001635110
FILING MIX · LIFETIME43%/57%
BUYS
19
SELLS
25
TOTAL VALUE
$5.57M
COMPANIES
1
ACTIVE SINCE
May 2020
HOLDINGS NOW
1,281
AVG SELL PX
$111.82
TRADE KIND
SHOWING 44 / 44
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
13 backtested trades · 8 horizons · 9 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Gary Stephen May, 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
7d13+30.77%+1.23%+0.63%+0.60%+0.60%
14d13+15.38%+3.49%+0.79%+3.33%+2.51%
30d13+7.69%+4.66%+2.60%+2.07%+1.33%
60d13(1 pending)+8.33%+6.54%+2.75%+3.79%+4.43%
90d13(1 pending)+33.33%+11.87%+6.10%+5.77%+5.04%
180d13(1 pending)+33.33%+8.86%+9.66%-0.80%-3.88%
1y13(2 pending)+18.18%+15.56%+15.80%-0.24%+2.43%
2y13(4 pending)+11.11%+26.13%+21.43%+4.70%+4.85%
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
LDOS · 1,281 shares · as of May 8, 2026
05,07510,15115,22620,301202120222023202420252026SHARES 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 · 19 buys / 25 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,2811,281May 8, 2026May 12, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,06711,204May 8, 2026May 12, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
3,345$75.02$250.9K13,482May 7, 2026May 8, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
3,3450May 7, 2026May 8, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
1,861$134.90$251.0K11,621May 7, 2026May 8, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
1,484$132.75$197.0K10,137May 7, 2026May 8, 2026View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,000$178.05$356.1K10,137Aug 11, 2025Aug 13, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
87312,137May 9, 2025May 13, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,0301,030May 9, 2025May 13, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
1,942$132.26$256.8K13,392Feb 18, 2025Feb 19, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
4,0700Feb 18, 2025Feb 19, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,128$131.24$279.3K11,264Feb 18, 2025Feb 19, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
4,070$63.08$256.7K15,334Feb 18, 2025Feb 19, 2025View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
1,000$144.02$144.0K11,264Aug 13, 2024Aug 14, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
91212,264May 3, 2024May 7, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,1791,179May 3, 2024May 7, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,745$124.49$341.7K11,352Feb 21, 2024Feb 22, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
4,7880Feb 21, 2024Feb 22, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
4,788$52.70$252.3K16,140Feb 21, 2024Feb 22, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,043$123.50$252.3K14,097Feb 21, 2024Feb 22, 2024View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,575$80.06$206.2K13,970May 11, 2023May 12, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
5,193$39.70$206.2K16,545May 11, 2023May 12, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
5,1930May 11, 2023May 12, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,618$78.71$206.1K11,352May 11, 2023May 12, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,57411,352May 5, 2023May 9, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
2,2962,296May 5, 2023May 9, 2023View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
7,299$102.35$747.0K9,778May 9, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
10,5230May 9, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
3,224$103.21$332.7K17,077May 9, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
10,523$31.62$332.8K20,301May 9, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,1069,778May 6, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,7841,784May 6, 2022May 10, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
1,290$88.72$114.4K11,012Feb 17, 2022Feb 18, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
2,340$91.53$214.2K8,672Feb 17, 2022Feb 18, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
3,6300Feb 17, 2022Feb 18, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
3,630$31.55$114.5K12,302Feb 17, 2022Feb 18, 2022View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
500$96.55$48.3K8,672Aug 12, 2021Aug 12, 2021View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
500$102.69$51.3K9,172May 13, 2021May 13, 2021View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,0599,672May 7, 2021May 11, 2021View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
2,1232,123May 7, 2021May 11, 2021View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
500$91.84$45.9K8,613Mar 2, 2021Mar 3, 2021View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
500$95.95$48.0K9,113Nov 9, 2020Nov 10, 2020View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
600$102.27$61.4K9,613May 11, 2020May 15, 2020View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,04710,213May 8, 2020May 12, 2020View →
Other insiders · LDOS
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About this filer
CIK 0001635110
ROLE
Director
PRIMARY
LDOS
COMPANIES
1
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001635110DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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