MarketPeel
Insider Trading Intelligence
JM

Joel S. Marcus

MGTX
DIRECTOR · MEIRAGTX HOLDINGS PLC · CIK 0001216955
FILING MIX · LIFETIME44%/56%
BUYS
31
SELLS
40
TOTAL VALUE
$49.25M
COMPANIES
2
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
602,724
AVG SELL PX
$154.55
TRADE KIND
SHOWING 71 / 71
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
36 backtested trades · 8 horizons · 32 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Joel S. Marcus, 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
7d36+80.56%+0.36%+0.51%-0.14%-0.42%-0.20
14d36+75.00%+0.10%+0.78%-1.41%-2.52%-1.42
30d36+69.44%+0.02%+1.91%-4.06%-3.20%-2.97
60d36(2 pending)+61.76%-0.20%+3.14%-3.35%-3.29%-1.55
90d36(6 pending)+46.67%-0.87%+6.33%-7.20%-5.27%-4.17
180d36(8 pending)+50.00%-1.76%+12.34%-14.10%-13.71%
1y36(8 pending)+42.86%+1.57%+26.04%-24.47%-19.98%
2y36(8 pending)+67.86%-15.12%+31.45%-46.57%-34.72%
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
MGTX · 15,000 shares · as of Jun 7, 2022
018,75637,51156,26775,02220212022SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
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 · 31 buys / 40 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
3,989$45.99$183.5K584,213May 6, 2026May 6, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
3,511$46.74$164.1K587,724May 6, 2026May 6, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
3,832$42.76$163.9K578,618May 5, 2026May 5, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
2,062$41.89$86.4K574,786May 5, 2026May 5, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
1,606$43.70$70.2K580,224May 5, 2026May 5, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
10,000$41.02$410.2K572,724May 4, 2026May 4, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
17,300$53.74$929.7K555,024Feb 12, 2026Feb 12, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASE
Executive Chairman
7,700$54.31$418.2K562,724Feb 12, 2026Feb 12, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
35,075537,724Jan 23, 2026Jan 24, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
14,671572,799Jan 22, 2026Jan 24, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
100,056587,470Jan 9, 2026Jan 12, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
31,270487,414Jan 2, 2026Jan 2, 2026View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
46,207456,144Jan 10, 2025Jan 10, 2025View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
15,610409,937Jan 2, 2025Jan 2, 2025View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
19,156394,327Dec 31, 2024Jan 2, 2025View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,400$128.91$696.1K413,483Mar 29, 2024Mar 29, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,655418,883Mar 29, 2024Mar 29, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
7,500$118.92$891.9K429,538Feb 26, 2024Feb 26, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
35,064437,038Jan 10, 2024Jan 11, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
3,000401,974Jan 5, 2024Jan 8, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
47,620398,974Jan 2, 2024Jan 3, 2024View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
7,500$122.20$916.5K351,354May 8, 2023May 8, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
6,507368,869Mar 31, 2023Apr 1, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,015$125.59$1.26M358,854Mar 31, 2023Apr 1, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
9,000$168.00$1.51M388,729Feb 7, 2023Feb 7, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,608$160.68$901.1K397,729Jan 27, 2023Jan 30, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
24,051403,337Jan 10, 2023Jan 10, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
42,260379,286Jan 3, 2023Jan 4, 2023View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
6,500$150.00$975.0K337,026Dec 12, 2022Dec 12, 2022View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
2,500$152.00$380.0K343,526Dec 5, 2022Dec 5, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
15,00015,000Jun 7, 2022Jun 9, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
15,00015,000Jun 7, 2022Jun 9, 2022View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
2,500346,026May 20, 2022May 23, 2022View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
24,560343,526Mar 31, 2022Apr 1, 2022View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
16,869318,966Jan 11, 2022Jan 11, 2022View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
7,500$207.61$1.56M302,097Aug 9, 2021Aug 9, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$202.63$1.01M309,597Aug 2, 2021Aug 2, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
15,000$200.00$3.00M314,597Jul 29, 2021Jul 29, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$200.02$1.00M329,597Jul 28, 2021Jul 29, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
15,00015,000Jun 10, 2021Jun 14, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
15,00015,000Jun 10, 2021Jun 14, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$180.41$902.0K334,597May 4, 2021May 4, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
15,000$180.33$2.70M339,597May 3, 2021May 4, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
12,395$164.30$2.04M354,597Mar 31, 2021Apr 1, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
21,310366,992Mar 31, 2021Apr 1, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
12,8820Mar 15, 2021Mar 17, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
12,882$7.72$99.4K12,882Mar 15, 2021Mar 17, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
21,251345,682Jan 8, 2021Jan 11, 2021View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
4,000$171.52$686.1K327,931Aug 17, 2020Aug 18, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
3,500$173.51$607.3K324,431Aug 17, 2020Aug 18, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
7,959$14.15$112.6K0Aug 12, 2020Aug 12, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
7,500$13.86$104.0K7,959Aug 11, 2020Aug 12, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
15,459$5.63$87.0K15,459Aug 10, 2020Aug 12, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
15,4590Aug 10, 2020Aug 12, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,000$177.00$1.77M331,931Aug 3, 2020Aug 3, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$175.52$877.6K341,931Aug 3, 2020Aug 3, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
25,000$174.90$4.37M351,931Jul 31, 2020Aug 3, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$175.58$877.9K346,931Jul 31, 2020Aug 3, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,000$156.07$1.56M391,931Jun 5, 2020Jun 5, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
15,000$156.75$2.35M376,931Jun 5, 2020Jun 5, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
25,00025,000Jun 2, 2020Jun 4, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
22$15.81$34875,000May 12, 2020May 14, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
4,900$15.77$77.3K75,022May 12, 2020May 14, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
5,000$152.95$764.8K411,931May 5, 2020May 5, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,000$151.60$1.52M416,931May 5, 2020May 5, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,000$154.08$1.54M401,931May 5, 2020May 5, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
10,000$156.82$1.57M426,931Apr 30, 2020May 1, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
26,030451,910Mar 31, 2020Apr 1, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
14,979$137.06$2.05M436,931Mar 31, 2020Apr 1, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
SALE
Executive Chairman
35,000$173.00$6.05M425,880Feb 12, 2020Feb 12, 2020View →
ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC.
PURCHASEGRANT
Stock grant
22,418460,880Jan 9, 2020Jan 10, 2020View →
Other insiders · MGTX
Loading peer insiders…
About this filer
CIK 0001216955
ROLE
Director
PRIMARY
MGTX
COMPANIES
2
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001216955DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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