MarketPeel
Insider Trading Intelligence
WK

William Kurtz

SRAD
DIRECTOR · SPORTRADAR GROUP AG · CIK 0001231740
FILING MIX · LIFETIME59%/41%
BUYS
10
SELLS
7
TOTAL VALUE
$227.5K
COMPANIES
2
ACTIVE SINCE
May 2021
HOLDINGS NOW
197,400
AVG SELL PX
$0.80
TRADE KIND
SHOWING 17 / 17
Trades · vs SPY
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Performance · forward returns vs SPY
8 backtested trades · 8 horizons · 8 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by William Kurtz, 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
7d8+87.50%-1.25%+0.68%-1.93%-2.89%
14d8+50.00%-0.19%+0.55%-0.74%-3.57%
30d8+25.00%-0.09%+2.97%-3.07%-0.00%
60d8+75.00%-11.80%+4.80%-16.60%-19.76%
90d8(1 pending)+57.14%-19.95%+8.23%-28.19%-26.73%
180d8(1 pending)+85.71%-37.38%+13.58%-50.96%-48.11%
1y8(1 pending)+85.71%-47.54%+19.92%-67.46%-74.92%
2y8(5 pending)+66.67%-85.68%+36.17%-121.85%-131.54%
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
SRAD · 41,478 shares · as of May 20, 2026
010,37020,73931,10941,478SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 10 buys / 7 sellsCOVERAGE · 21 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRAD
SPORTRADAR GROUP AG
PURCHASEGRANT
Stock grant
13,16741,478May 20, 2026May 21, 2026View →
SRAD
SPORTRADAR GROUP AG
SALE
1,868$12.49$23.3K28,311May 15, 2026May 19, 2026View →
SRAD
SPORTRADAR GROUP AG
PURCHASE
8,000$12.97$103.8K30,179Apr 30, 2026May 4, 2026View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
40,394155,922Jan 23, 2026Jan 23, 2026View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
78,034115,528Aug 13, 2025Aug 15, 2025View →
ATER
ATERIAN, INC.
SALE
5,000$1.39$7.0K37,494Jun 10, 2025Jun 11, 2025View →
ATER
ATERIAN, INC.
SALE
4,722$1.41$6.7K42,494Jun 9, 2025Jun 11, 2025View →
ATER
ATERIAN, INC.
SALE
8,547$3.01$25.7K47,216Aug 23, 2024Aug 23, 2024View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
33,69355,763Aug 16, 2024Aug 20, 2024View →
ATER
ATERIAN, INC.
SALE
453$3.15$1.4K269,817Aug 15, 2024Aug 16, 2024View →
ATER
ATERIAN, INC.
SALE
6,829$0.34$2.3K270,270Nov 16, 2023Nov 17, 2023View →
ATER
ATERIAN, INC.
SALE
96,914$0.34$33.0K277,099Nov 15, 2023Nov 17, 2023View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
270,270374,013Sep 13, 2023Sep 14, 2023View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
42,195103,743Jul 26, 2022Jul 28, 2022View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
8,44961,548Sep 30, 2021Oct 4, 2021View →
ATER
ATERIAN, INC.
PURCHASEGRANT
Stock grant
1,23653,099Sep 30, 2021Oct 4, 2021View →
ATER
ATERIAN, INC.
PURCHASE
1,450$16.80$24.4K51,863May 20, 2021May 21, 2021View →
Other insiders · SRAD
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About this filer
CIK 0001231740
ROLE
Director
PRIMARY
SRAD
COMPANIES
2
ACTIVE SINCE
May 2021
MARKETPEEL · /INSIDER/0001231740DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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