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Elizabeth A. Porter

LDOS
GROUP PRESIDENT · LEIDOS HOLDINGS, INC. · CIK 0001820381
FILING MIX · LIFETIME30%/70%
BUYS
20
SELLS
47
TOTAL VALUE
$5.51M
COMPANIES
1
ACTIVE SINCE
Aug 2020
HOLDINGS NOW
49,561
AVG SELL PX
$147.73
TRADE KIND
SHOWING 67 / 67
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
5 backtested trades · 8 horizons · 15 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Elizabeth A. Porter, 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
7d5+60.00%-0.82%+3.24%-4.06%-4.62%—
14d5+100.00%-1.81%+3.23%-5.03%-2.36%—
30d5+60.00%-6.32%+5.25%-11.56%-8.69%—
60d5+100.00%-16.31%+4.02%-20.33%-12.87%—
90d5(2 pending)+100.00%-13.06%-0.51%-12.56%-7.09%—
180d5(3 pending)+100.00%-38.50%+10.25%-48.75%-48.75%—
1y5(5 pending)——————
2y5(5 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
LDOS · 49,561 shares · as of Apr 7, 2026
013,16426,32939,49352,657202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
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 · 20 buys / 47 sellsCOVERAGE · 24 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
LDOS
LEIDOS HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
85$159.33$13.5K49,476Apr 7, 2026Apr 8, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
1,915$158.75$304.0K49,561Apr 7, 2026Apr 8, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
588$177.89$104.6K51,476Mar 8, 2026Mar 10, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
593$177.89$105.5K52,064Mar 7, 2026Mar 10, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
4,626——52,657Mar 6, 2026Mar 10, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
376$180.65$67.9K48,031Mar 4, 2026Mar 5, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
651$179.40$116.8K48,407Mar 3, 2026Mar 5, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
3,240——0Feb 23, 2026Feb 25, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
Sector President
3,240$62.43$202.3K51,263Feb 23, 2026Feb 25, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
2,205$173.50$382.6K49,058Feb 23, 2026Feb 25, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
3,552——42,127Feb 12, 2026Feb 17, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
10,146——52,273Feb 12, 2026Feb 17, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
4,250$173.00$735.3K48,023Feb 12, 2026Feb 17, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
3,000$192.21$576.6K38,575Jan 20, 2026Jan 22, 2026 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
2,303$180.89$416.6K42,272Dec 19, 2025Dec 22, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
697$181.55$126.5K41,575Dec 19, 2025Dec 22, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
606$139.24$84.4K44,575Mar 8, 2025Mar 11, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
3,758——45,181Mar 7, 2025Mar 11, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
9,149——9,149Mar 7, 2025Mar 11, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
410$132.22$54.2K41,423Mar 5, 2025Mar 7, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
370$129.20$47.8K41,842Mar 4, 2025Mar 5, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
646$129.97$84.0K42,212Mar 3, 2025Mar 5, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
1,723$132.26$227.9K42,858Feb 18, 2025Feb 19, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
2,524——0Feb 18, 2025Feb 19, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
Sector President
2,524$63.76$160.9K44,581Feb 18, 2025Feb 19, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
3,554——38,177Feb 6, 2025Feb 10, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
2,184$141.29$308.6K42,057Feb 6, 2025Feb 10, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
6,064——44,241Feb 6, 2025Feb 10, 2025 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
269$143.29$38.5K34,623Aug 7, 2024Aug 9, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
8,814——8,814Mar 8, 2024Mar 12, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
68$129.30$8.8K34,892Mar 6, 2024Mar 8, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
410$129.52$53.1K34,960Mar 5, 2024Mar 7, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
670$127.44$85.4K35,370Mar 4, 2024Mar 5, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
376$127.44$47.9K36,040Mar 3, 2024Mar 5, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
3,268——0Feb 16, 2024Feb 20, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
2,077$122.19$253.8K36,416Feb 16, 2024Feb 20, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASE
Sector President
3,268$53.54$175.0K38,493Feb 16, 2024Feb 20, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
8,388——36,832Feb 8, 2024Feb 12, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Sector President
1,607$113.08$181.7K35,225Feb 8, 2024Feb 12, 2024 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
269$97.10$26.1K28,444Aug 7, 2023Aug 9, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
10,163——28,713Aug 4, 2023Aug 8, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
112$96.52$10.8K18,550Mar 8, 2023Mar 10, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
68$97.30$6.6K18,662Mar 6, 2023Mar 7, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
296$97.30$28.8K18,730Mar 5, 2023Mar 7, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
376$97.30$36.6K19,026Mar 4, 2023Mar 7, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
9,555——9,555Mar 3, 2023Mar 7, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
1,435$98.96$142.0K19,402Feb 9, 2023Feb 13, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
6,940——20,837Feb 9, 2023Feb 13, 2023 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
179$100.55$18.0K13,897Aug 7, 2022Aug 9, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
74$106.86$7.9K14,348Mar 8, 2022Mar 10, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
45$105.08$4.7K14,422Mar 6, 2022Mar 8, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
45$107.71$4.8K14,150Mar 6, 2022Mar 22, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
272$107.71$29.3K14,195Mar 5, 2022Mar 22, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
8,604——8,604Mar 4, 2022Mar 8, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
70$104.75$7.3K14,467Mar 2, 2022Mar 4, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
4,813——15,102Feb 10, 2022Feb 14, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
565$88.43$50.0K14,537Feb 10, 2022Feb 14, 2022 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
759$95.82$72.7K10,289Nov 9, 2021Nov 12, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
179$94.38$16.9K11,048Aug 7, 2021Aug 10, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
74$90.72$6.7K11,227Mar 8, 2021Mar 9, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
45$90.72$4.1K11,301Mar 6, 2021Mar 9, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
9,696——9,696Mar 5, 2021Mar 9, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
83$90.04$7.5K11,346Mar 3, 2021Mar 5, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
70$92.44$6.5K11,429Mar 2, 2021Mar 4, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
SALE
Group President
576$105.48$60.8K11,499Feb 18, 2021Feb 22, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
3,740——12,075Feb 18, 2021Feb 22, 2021 ↗View →
LDOS
LEIDOS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
6,785——6,785Aug 7, 2020Aug 10, 2020 ↗View →
Other insiders · LDOS
Loading peer insiders…
About this filer
CIK 0001820381
ROLE
Group President
PRIMARY
LDOS
COMPANIES
1
ACTIVE SINCE
Aug 2020
MARKETPEEL · /INSIDER/0001820381DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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