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JC

James G. Castellano

CNM
DIRECTOR · CORE & MAIN, INC. · CIK 0001866541
FILING MIX · LIFETIME47%/53%
BUYS
21
SELLS
24
TOTAL VALUE
$4.74M
COMPANIES
1
ACTIVE SINCE
Jun 2023
HOLDINGS NOW
7,437
AVG SELL PX
$50.46
TRADE KIND
SHOWING 45 / 45
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by James G. Castellano, 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
7d7+14.29%+2.75%+1.00%+1.75%+2.32%—
14d7+14.29%+4.51%+0.35%+4.16%+3.50%—
30d7+42.86%+4.56%+0.74%+3.82%+4.66%—
60d7+57.14%+0.52%+5.01%-4.49%-19.87%—
90d7+57.14%+8.90%+8.97%-0.07%-16.07%—
180d7+28.57%+39.83%+13.53%+26.30%-2.95%—
1y7(1 pending)+0.00%+36.63%+25.65%+10.97%+9.82%—
2y7(4 pending)+0.00%+75.32%+63.51%+11.81%+9.40%—
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
CNM · 7,437 shares · as of Jun 23, 2026
057,780115,560173,340231,120202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 21 buys / 24 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Stock grant
2,799——7,437Jun 23, 2026Jun 24, 2026 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
43,994$61.98$2.73M0Jul 18, 2025Jul 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
34,674——34,674Jul 18, 2025Jul 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
SALE
34,674——0Jul 18, 2025Jul 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
SALE
34,674——158,946Jul 18, 2025Jul 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
34,674——43,994Jul 18, 2025Jul 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Stock grant
2,189——4,638Jun 24, 2025Jun 26, 2025 ↗View →
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Gift
9,320——9,320Apr 17, 2025Apr 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
SALEGRANT
Gift
9,320——2,449Apr 17, 2025Apr 21, 2025 ↗View →
CNM
CORE & MAIN, INC.
SALEGRANT
Gift
9,320——2,449Apr 17, 2025Apr 22, 2025 ↗View →
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Gift
9,320——9,320Apr 17, 2025Apr 22, 2025 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,500——193,620Jul 15, 2024Jul 17, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,500——12,500Jul 15, 2024Jul 17, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,500——0Jul 15, 2024Jul 17, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
12,500$52.22$652.8K0Jul 15, 2024Jul 17, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,500——12,500Jul 15, 2024Jul 17, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
12,300$50.70$623.6K0Jul 11, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,300——0Jul 11, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,300——12,300Jul 11, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,300——12,300Jul 11, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,300——206,120Jul 11, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE
200——218,420Jul 10, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
200——200Jul 10, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
200——200Jul 10, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE
200——0Jul 10, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
200$50.01$10.0K0Jul 10, 2024Jul 12, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Stock grant
2,449——11,769Jun 26, 2024Jun 28, 2024 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
9,890——9,890Oct 31, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
9,890——0Oct 31, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
9,890——9,890Oct 31, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
9,890——218,620Oct 31, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
9,890$30.03$297.0K0Oct 31, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
2,610——2,610Oct 30, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
2,610——228,510Oct 30, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
2,610——2,610Oct 30, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
2,610$30.00$78.3K0Oct 30, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
2,610——0Oct 30, 2023Nov 1, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,358——231,120Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE10b5-1
10b5-1 plan
12,500$28.35$354.4K0Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,358——12,358Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
142——0Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
12,358——12,500Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASE
142——142Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
SALE
12,358——0Sep 25, 2023Sep 27, 2023 ↗View →
CNM
CORE & MAIN, INC.
PURCHASEGRANT
Stock grant
3,927——9,320Jun 28, 2023Jun 30, 2023 ↗View →
Other insiders · CNM
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About this filer
CIK 0001866541
ROLE
Director
PRIMARY
CNM
COMPANIES
1
ACTIVE SINCE
Jun 2023
MARKETPEEL · /INSIDER/0001866541DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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