MarketPeel
Insider Trading Intelligence
JH

John W. Hill

CSGP
DIRECTOR · COSTAR GROUP, INC. · CIK 0001351689
FILING MIX · LIFETIME32%/68%
BUYS
7
SELLS
15
TOTAL VALUE
$3.41M
COMPANIES
1
ACTIVE SINCE
Dec 2019
HOLDINGS NOW
26,493
AVG SELL PX
$87.34
TRADE KIND
SHOWING 22 / 22
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 4 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John W. Hill, 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
7d11+72.73%-1.07%+1.16%-2.23%-2.61%
14d11+54.55%-1.10%+1.74%-2.83%-3.42%
30d11+45.45%+1.12%+1.90%-0.78%-1.88%
60d11+54.55%-1.20%+1.35%-2.56%-5.79%
90d11+54.55%-0.58%+2.91%-3.48%-11.22%
180d11+54.55%-4.42%+5.33%-9.75%-13.90%
1y11(1 pending)+60.00%+5.72%+13.74%-8.02%-4.56%
2y11(3 pending)+75.00%+0.58%+32.63%-32.05%-28.61%
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
CSGP · 26,493 shares · as of Jun 23, 2026
08,29016,57924,86933,1582020202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2019
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 · 7 buys / 15 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
8,26226,493Jun 23, 2026Jun 24, 2026View →
CSGP
COSTAR GROUP, INC.
SALE
2,250$68.68$154.5K18,231Nov 13, 2025Nov 17, 2025View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
3,17720,481Sep 9, 2025Sep 11, 2025View →
CSGP
COSTAR GROUP, INC.
SALEGRANT
Gift
19517,304Dec 10, 2024Dec 11, 2024View →
CSGP
COSTAR GROUP, INC.
SALE
2,735$76.76$209.9K17,499Dec 10, 2024Dec 11, 2024View →
CSGP
COSTAR GROUP, INC.
SALE
1,325$78.16$103.6K16,545Jul 30, 2024Aug 1, 2024View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
3,68920,234Jul 17, 2024Aug 5, 2024View →
CSGP
COSTAR GROUP, INC.
SALE
3,020$84.07$253.9K17,870Nov 28, 2023Nov 29, 2023View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
3,95620,890Oct 30, 2023Nov 1, 2023View →
CSGP
COSTAR GROUP, INC.
SALE
1,500$86.57$129.9K16,934Jun 26, 2023Jun 28, 2023View →
CSGP
COSTAR GROUP, INC.
SALE
2,300$68.50$157.6K18,434Mar 31, 2023Apr 4, 2023View →
CSGP
COSTAR GROUP, INC.
SALE
3,650$78.92$288.1K20,734Nov 3, 2022Nov 4, 2022View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
3,78624,384Sep 14, 2022Sep 15, 2022View →
CSGP
COSTAR GROUP, INC.
SALE
1,400$74.49$104.3K20,598Aug 10, 2022Aug 11, 2022View →
CSGP
COSTAR GROUP, INC.
SALE
1,750$57.07$99.9K21,998May 24, 2022May 26, 2022View →
CSGP
COSTAR GROUP, INC.
SALE
9,235$86.97$803.2K23,923Oct 29, 2021Nov 2, 2021View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
3,148$88.95$280.0K33,158Sep 15, 2021Sep 17, 2021View →
CSGP
COSTAR GROUP, INC.
SALE
6,160$85.77$528.3K30,200Aug 9, 2021Aug 11, 2021View →
CSGP
COSTAR GROUP, INC.
SALEGRANT
Gift
19030,010Mar 26, 2021Aug 11, 2021View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
2513,657Sep 24, 2020Sep 25, 2020View →
CSGP
COSTAR GROUP, INC.
SALEGRANT
Gift
213,636Aug 12, 2020Sep 25, 2020View →
CSGP
COSTAR GROUP, INC.
SALE
500$591.90$295.9K3,406Dec 31, 2019Jan 2, 2020View →
Other insiders · CSGP
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About this filer
CIK 0001351689
ROLE
Director
PRIMARY
CSGP
COMPANIES
1
ACTIVE SINCE
Dec 2019
MARKETPEEL · /INSIDER/0001351689DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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