MarketPeel
Insider Trading Intelligence
MT

Mary A. Tidlund

CIX
DIRECTOR · COMPX INTERNATIONAL INC · CIK 0001606509
FILING MIX · LIFETIME82%/18%
BUYS
14
SELLS
3
TOTAL VALUE
$232.1K
COMPANIES
2
ACTIVE SINCE
May 2020
HOLDINGS NOW
18,491
AVG SELL PX
$28.30
TRADE KIND
SHOWING 17 / 17
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Mary A. Tidlund, 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
7d3+66.67%-3.10%-0.74%-2.37%-3.52%
14d3+100.00%-5.54%-1.18%-4.35%-4.46%
30d3+66.67%-6.72%-0.23%-6.49%-9.65%
60d3+100.00%-21.29%-6.67%-14.62%-14.04%
90d3+100.00%-19.80%-1.17%-18.63%-20.02%
180d3+100.00%-15.71%-1.73%-13.98%-14.11%
1y3+100.00%-17.87%+11.74%-29.61%-35.67%
2y3(2 pending)+0.00%+5.70%+28.67%-22.97%-22.97%
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
CIX · 8,100 shares · as of May 20, 2026
02,1634,3256,4888,650202120222023202420252026SHARES 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 · 14 buys / 3 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
3,150$12.66$39.9K10,391May 21, 2026May 22, 2026View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
1,700$23.44$39.8K8,100May 20, 2026May 21, 2026View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
1,250$15.74$19.7K7,241May 22, 2025May 23, 2025View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
750$25.99$19.5K6,400May 21, 2025May 22, 2025View →
CIX
COMPX INTERNATIONAL INC
SALE
1,000$29.02$29.0K5,650Nov 14, 2024Nov 14, 2024View →
CIX
COMPX INTERNATIONAL INC
SALE
2,000$28.58$57.2K6,650Nov 12, 2024Nov 13, 2024View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
1,0505,991May 23, 2024May 24, 2024View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
8008,650May 22, 2024May 23, 2024View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
1,5004,941May 25, 2023May 26, 2023View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
1,1007,850May 24, 2023May 25, 2023View →
CIX
COMPX INTERNATIONAL INC
SALE
1,000$27.00$27.0K6,750Aug 12, 2022Aug 15, 2022View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
4003,441May 26, 2022May 27, 2022View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
9007,750May 25, 2022May 26, 2022View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
8003,041May 28, 2021Jun 1, 2021View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
9006,850May 26, 2021May 27, 2021View →
VHI
VALHI INC /DE/
PURCHASEGRANT
Stock grant
10,00026,900May 28, 2020Jun 1, 2020View →
CIX
COMPX INTERNATIONAL INC
PURCHASEGRANT
Stock grant
1,3505,950May 27, 2020May 28, 2020View →
Other insiders · CIX
Loading peer insiders…
About this filer
CIK 0001606509
ROLE
Director
PRIMARY
CIX
COMPANIES
2
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001606509DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback