MarketPeel
Insider Trading Intelligence
PC

Paul Caine

MGNI
DIRECTOR · MAGNITE, INC. · CIK 0001411765
FILING MIX · LIFETIME26%/74%
BUYS
8
SELLS
23
TOTAL VALUE
$3.35M
COMPANIES
2
ACTIVE SINCE
Apr 2020
HOLDINGS NOW
348,573
AVG SELL PX
$29.17
TRADE KIND
SHOWING 31 / 31
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
22 backtested trades · 8 horizons · 15 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Paul Caine, 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
7d22+81.82%-3.20%+0.10%-3.30%-2.76%
14d22+63.64%-2.69%+1.04%-3.73%-2.63%
30d22+54.55%-6.15%+1.34%-7.49%-9.42%
60d22+68.18%-14.40%+2.98%-17.38%-21.15%
90d22+81.82%-14.72%+4.78%-19.51%-24.06%
180d22+95.45%-34.58%+8.12%-42.69%-38.21%
1y22(6 pending)+100.00%-59.55%+3.75%-63.30%-62.99%
2y22(9 pending)+100.00%-66.40%+3.60%-70.00%-68.80%
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
MGNI · 162,401 shares · as of Jul 10, 2026
051,152102,304153,456204,608202120222023202420252026SHARES 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 · 8 buys / 23 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$20.64$103.2K162,401Jul 10, 2026Jul 14, 2026View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
13,798167,401Jun 8, 2026Jun 10, 2026View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$20.00$100.0K153,603Oct 24, 2025Oct 28, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
7,500$25.00$187.5K158,603Sep 19, 2025Sep 19, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
1,189$23.91$28.4K166,103Sep 10, 2025Sep 12, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
3,811$23.50$89.6K167,292Sep 10, 2025Sep 12, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
7,500$25.00$187.5K171,103Aug 25, 2025Aug 26, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$22.29$111.5K178,603Aug 11, 2025Aug 13, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$23.53$117.7K183,603Jul 10, 2025Jul 11, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$20.00$100.0K188,603Jun 24, 2025Jun 26, 2025View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
10,766193,603Jun 5, 2025Jun 6, 2025View →
MGNI
MAGNITE, INC.
SALE10b5-1
10b5-1 plan
5,000$20.35$101.8K182,837Feb 10, 2025Feb 12, 2025View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
14,061187,837Jun 12, 2024Jun 13, 2024View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
13,743173,776Jun 14, 2023Jun 16, 2023View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
16,489160,033Jun 7, 2022Jun 9, 2022View →
MGNI
MAGNITE, INC.
SALE
1,100$32.16$35.4K144,044Jul 12, 2021Jul 13, 2021View →
MGNI
MAGNITE, INC.
SALE
500$33.14$16.6K143,544Jul 12, 2021Jul 13, 2021View →
MGNI
MAGNITE, INC.
SALE
13,400$31.33$419.8K145,144Jul 12, 2021Jul 13, 2021View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
3,936158,544Jun 28, 2021Jun 30, 2021View →
MGNI
MAGNITE, INC.
SALE
3,130$33.45$104.7K154,608Jun 10, 2021Jun 11, 2021View →
MGNI
MAGNITE, INC.
SALE
11,870$32.57$386.6K157,738Jun 10, 2021Jun 11, 2021View →
MGNI
MAGNITE, INC.
SALE
521$32.84$17.1K169,608May 10, 2021May 12, 2021View →
MGNI
MAGNITE, INC.
SALE
14,079$30.70$432.2K170,529May 10, 2021May 12, 2021View →
MGNI
MAGNITE, INC.
SALE
400$31.99$12.8K170,129May 10, 2021May 12, 2021View →
MGNI
MAGNITE, INC.
SALE
11,365$40.20$456.9K186,208Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
100$43.10$4.3K184,608Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
7,035$39.52$278.0K197,573Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
900$42.51$38.3K184,708Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
600$41.49$24.9K185,608Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
18,436204,608Jul 8, 2020Jul 16, 2020View →
RUBI
RUBICO INC.
PURCHASEGRANT
Stock grant
186,172186,172Apr 1, 2020Apr 3, 2020View →
Other insiders · MGNI
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About this filer
CIK 0001411765
ROLE
Director
PRIMARY
MGNI
COMPANIES
2
ACTIVE SINCE
Apr 2020
MARKETPEEL · /INSIDER/0001411765DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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