MarketPeel
Insider Trading Intelligence
SM

Steven Mizell

GPI
DIRECTOR · GROUP 1 AUTOMOTIVE INC · CIK 0001189403
FILING MIX · LIFETIME56%/44%
BUYS
46
SELLS
36
TOTAL VALUE
$35.86M
COMPANIES
4
ACTIVE SINCE
May 2020
HOLDINGS NOW
71,212
AVG SELL PX
$114.23
TRADE KIND
SHOWING 82 / 82
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
18 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Steven Mizell, 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
7d18+72.22%-0.61%-0.15%-0.46%-0.85%
14d18+50.00%-0.20%+0.35%-0.55%-1.72%
30d18+55.56%+0.42%+0.61%-0.19%+1.35%
60d18+50.00%+2.41%+2.76%-0.35%-0.14%
90d18+50.00%-1.48%+5.59%-7.07%-2.18%
180d18+38.89%+1.98%+8.10%-6.12%-10.34%
1y18(2 pending)+18.75%+8.25%+19.77%-11.52%-10.88%
2y18(3 pending)+73.33%-10.24%+47.74%-57.98%-63.66%
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
GPI · 583 shares · as of Jan 2, 2026
09851,9702,9553,94020222023202420252026SHARES 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
2026
FLOW · 46 buys / 36 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
268$74.36$19.9K42,830Jul 15, 2026Jul 16, 2026View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
5,491$63.74$350.0K42,562Jun 18, 2026Jun 22, 2026View →
ALLE
ALLEGION PLC
SALE
292$130.27$38.0K5,711Jun 5, 2026Jun 9, 2026View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,0746,003Jun 4, 2026Jun 8, 2026View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
396$49.79$19.7K37,071Apr 15, 2026Apr 16, 2026View →
ALLE
ALLEGION PLC
SALE
1,000$161.51$161.5K4,915Feb 19, 2026Feb 20, 2026View →
ALLE
ALLEGION PLC
SALE
400$163.79$65.5K5,915Feb 18, 2026Feb 20, 2026View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
206$97.44$20.1K36,675Jan 15, 2026Jan 16, 2026View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
575583Jan 2, 2026Jan 6, 2026View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
267$75.52$20.2K36,469Oct 15, 2025Oct 16, 2025View →
GPI
GROUP 1 AUTOMOTIVE INC
SALE
525$417.98$219.4K8Jul 29, 2025Jul 30, 2025View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
517$38.53$19.9K36,202Jul 15, 2025Jul 17, 2025View →
ALLE
ALLEGION PLC
SALE
319$139.34$44.4K6,275Jun 6, 2025Jun 10, 2025View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,0136,594Jun 5, 2025Jun 9, 2025View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
6,082$41.10$250.0K35,685May 29, 2025May 30, 2025View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
760$25.94$19.7K29,603Apr 15, 2025Apr 16, 2025View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
1,147$17.58$20.2K28,843Jan 15, 2025Jan 16, 2025View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
533533Jan 2, 2025Jan 6, 2025View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
248$13.62$3.4K27,696Oct 30, 2024Nov 1, 2024View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
978$14.01$13.7K27,448Oct 15, 2024Oct 17, 2024View →
ALLE
ALLEGION PLC
PURCHASE
1,000$136.53$136.5K5,545Jul 26, 2024Jul 30, 2024View →
GRAL
GRAIL, INC.
PURCHASEGRANT
Stock grant
26,47026,470Jun 25, 2024Jun 27, 2024View →
ALLE
ALLEGION PLC
SALE
294$116.52$34.3K4,532Jun 8, 2024Jun 11, 2024View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,1054,826Jun 6, 2024Jun 10, 2024View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
32,17022,088Feb 2, 2024Feb 2, 2024View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
8240Feb 2, 2024Feb 2, 2024View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
32,170$73.73$2.37M74,313.145Feb 2, 2024Feb 2, 2024View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
50,694$126.65$6.42M23,619.145Feb 2, 2024Feb 2, 2024View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
824$70.71$58.3K42,143.145Feb 2, 2024Feb 2, 2024View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
18,384$119.43$2.20M41,319.145Jan 22, 2024Jan 24, 2024View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
7393,940Jan 2, 2024Jan 4, 2024View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
2983,789Dec 8, 2023Dec 12, 2023View →
ALLE
ALLEGION PLC
SALE
86$109.51$9.4K3,703Dec 8, 2023Dec 12, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
4,250$109.01$463.3K22,935.145Aug 14, 2023Aug 15, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
4,500$105.49$474.7K27,185.145Aug 3, 2023Aug 4, 2023View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,0193,472Jun 8, 2023Jun 12, 2023View →
ALLE
ALLEGION PLC
SALE
293$107.41$31.5K2,453Jun 2, 2023Jun 6, 2023View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
12,000$73.73$884.8K73,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
13,000$77.62$1.01M46,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
13,400$119.01$1.59M31,685.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
12,00032,151May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
15,000$75.36$1.13M61,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
13,000$119.01$1.55M60,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
15,00044,151May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
12,000$119.01$1.43M33,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
12,00054,258May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
15,000$119.01$1.79M45,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
13,00039,366May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
12,000$75.36$904.3K45,085.145May 3, 2023May 5, 2023View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
29,04629,046May 2, 2023May 4, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
1,815$109.10$198.0K33,085.145Feb 13, 2023Feb 14, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
5,000$107.00$535.0K34,900.145Feb 9, 2023Feb 10, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
4,436$104.25$462.5K39,900.145Feb 6, 2023Feb 8, 2023View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
12,192$109.88$1.34M44,336.145Jan 23, 2023Jan 25, 2023View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
1,1023,201Jan 3, 2023Jan 5, 2023View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
15,000$101.42$1.52M32,144.145Nov 10, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
15,000824Nov 10, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
15,00047,144.145Nov 10, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
20,00052,144.145Nov 8, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
20,00015,824Nov 8, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
20,000$101.00$2.02M32,144.145Nov 8, 2022Nov 10, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
17,00035,824Oct 28, 2022Nov 1, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
17,000$100.00$1.70M40,144.145Oct 28, 2022Nov 1, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
8,000$98.84$790.7K32,144.145Oct 28, 2022Nov 1, 2022View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
17,00057,144.145Oct 28, 2022Nov 1, 2022View →
ALLE
ALLEGION PLC
SALE
241$112.36$27.1K2,719Jun 3, 2022Jun 7, 2022View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,0162,960Jun 2, 2022Jun 6, 2022View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
40,77740,777May 3, 2022May 5, 2022View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
14,571$73.51$1.07M40,144.145Feb 24, 2022Feb 28, 2022View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
1,0302,099Jan 3, 2022Jan 4, 2022View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
2,323$88.05$204.5K25,573.145Oct 30, 2021Nov 2, 2021View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
4,715$88.05$415.2K27,896.145Oct 30, 2021Nov 2, 2021View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
4,7150Oct 30, 2021Nov 2, 2021View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
8351,934Jun 3, 2021Jun 7, 2021View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
64,28664,286May 4, 2021May 6, 2021View →
GPI
GROUP 1 AUTOMOTIVE INC
PURCHASEGRANT
Stock grant
1,0691,069Mar 1, 2021Mar 2, 2021View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
17,830$72.62$1.29M23,181.145Feb 26, 2021Mar 2, 2021View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
4,5744,575Oct 30, 2020Nov 3, 2020View →
MRK
MERCK & CO., INC.
PURCHASE
EVP, Chief HR Officer
4,574$75.89$347.1K7,624.145Oct 30, 2020Nov 3, 2020View →
MRK
MERCK & CO., INC.
SALE
EVP, Chief HR Officer
2,273$75.89$172.5K5,351.145Oct 30, 2020Nov 3, 2020View →
ALLE
ALLEGION PLC
PURCHASEGRANT
Stock grant
1,0991,099Jun 4, 2020Jun 8, 2020View →
MRK
MERCK & CO., INC.
PURCHASEGRANT
Stock grant
57,39157,391May 1, 2020May 5, 2020View →
Other insiders · GPI
Loading peer insiders…
About this filer
CIK 0001189403
ROLE
Director
PRIMARY
GPI
COMPANIES
4
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001189403DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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