MarketPeel
Insider Trading Intelligence
TK

Thomas Kershaw

MGNI
CHIEF TECHNOLOGY OFFICER · MAGNITE, INC. · CIK 0001686179
FILING MIX · LIFETIME24%/76%
BUYS
8
SELLS
25
TOTAL VALUE
$11.96M
COMPANIES
2
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
489,430
AVG SELL PX
$20.47
TRADE KIND
SHOWING 33 / 33
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
12 backtested trades · 8 horizons
Forward-return performance of every backtestable P/S trade by Thomas Kershaw, 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
7d12+50.00%+9.34%+0.68%+8.66%-1.49%
14d12+75.00%+5.66%+1.38%+4.28%-12.94%
30d12+75.00%+2.95%+1.98%+0.96%-15.40%
60d12+66.67%+10.78%+4.19%+6.58%-32.73%
90d12+66.67%+65.84%+7.40%+58.44%-22.81%
180d12+75.00%+57.10%+10.57%+46.53%-37.15%
1y12+75.00%-13.22%+16.33%-29.54%-78.36%
2y12+75.00%-54.56%+7.42%-61.98%-81.31%
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 · 473,763 shares · as of May 17, 2021
0165,902331,805497,707663,6092021SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
FLOW · 8 buys / 25 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
41,213$25.98$1.07M473,763May 17, 2021May 19, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
7,926$39.56$313.6K557,050Apr 6, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
42,074$40.52$1.70M514,976Apr 6, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
18,484$40.37$746.2K578,625Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
5,026$42.54$213.8K566,076Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
1,100$43.49$47.8K564,976Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
7,523$41.78$314.3K571,102Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
17,867$39.46$705.0K597,109Apr 5, 2021Apr 7, 2021View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
31,760614,976Apr 1, 2021Apr 5, 2021View →
MGNI
MAGNITE, INC.
PURCHASEGRANT
Stock grant
23,63423,634Apr 1, 2021Apr 5, 2021View →
MGNI
MAGNITE, INC.
PURCHASE
Chief Technology Officer
50,000$4.92$246.0K633,216Feb 16, 2021Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
50,000$59.20$2.96M583,216Feb 16, 2021Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
50,000129,000Feb 16, 2021Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
30,393$11.06$336.1K583,216Nov 16, 2020Feb 18, 2021View →
MGNI
MAGNITE, INC.
PURCHASE
Chief Technology Officer
50,000$7.72$386.0K663,609Nov 16, 2020Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
50,000$10.91$545.5K613,609Nov 16, 2020Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
50,0000Nov 16, 2020Feb 18, 2021View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
30,393$11.06$336.1K583,216Nov 16, 2020Nov 18, 2020View →
MGNI
MAGNITE, INC.
PURCHASE
Chief Technology Officer
30,000$1.97$59.1K643,609Aug 17, 2020Aug 19, 2020View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
30,00033,195Aug 17, 2020Aug 19, 2020View →
MGNI
MAGNITE, INC.
SALE
Chief Technology Officer
30,000$7.48$224.4K613,609Aug 17, 2020Aug 19, 2020View →
RUBI
RUBICO INC.
PURCHASE
Chief Technology Officer
51,000$6.06$309.1K664,609Jun 3, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
51,000$7.50$382.5K613,609Jun 3, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
51,00015,667Jun 3, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
18,754$5.13$96.2K615,979May 20, 2020May 20, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
21,124$5.13$108.4K613,609May 20, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
15,039$5.23$78.7K634,733May 19, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
15,039$5.23$78.7K634,733May 19, 2020May 20, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
16,122$5.43$87.5K649,772May 18, 2020Jun 5, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
16,122$5.43$87.5K649,772May 18, 2020May 20, 2020View →
RUBI
RUBICO INC.
PURCHASEGRANT
Stock grant
115,784115,784Apr 1, 2020Apr 3, 2020View →
RUBI
RUBICO INC.
PURCHASEGRANT
Stock grant
153,993665,894Apr 1, 2020Apr 3, 2020View →
RUBI
RUBICO INC.
SALE
Chief Technology Officer
50,237$10.45$525.0K511,901Jan 16, 2020Jan 21, 2020View →
Other insiders · MGNI
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About this filer
CIK 0001686179
ROLE
Chief Technology Officer
PRIMARY
MGNI
COMPANIES
2
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001686179DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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