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Insider Trading Intelligence
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Frederick G. Saint

CSGP
PRESIDENT, MARKETPLACES · COSTAR GROUP, INC. · CIK 0001500076
FILING MIX · LIFETIME32%/68%
BUYS
15
SELLS
32
TOTAL VALUE
$26.89M
COMPANIES
1
ACTIVE SINCE
Feb 2021
HOLDINGS NOW
279,851
AVG SELL PX
$115.15
TRADE KIND
SHOWING 47 / 47
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 8 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Frederick G. Saint, 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
7d7+71.43%+0.61%+0.09%+0.52%-1.39%—
14d7+57.14%-0.76%+0.72%-1.48%-0.90%—
30d7+42.86%-2.33%+2.05%-4.38%-5.71%—
60d7+42.86%-6.29%+5.63%-11.91%-13.94%—
90d7+42.86%-9.43%+6.29%-12.51%-10.57%—
180d7(1 pending)+66.67%-15.81%+10.24%-26.05%-30.32%—
1y7(3 pending)+100.00%-23.41%+19.26%-42.67%-32.72%—
2y7(4 pending)+100.00%-28.67%+30.17%-58.84%-45.73%—
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 · 279,851 shares · as of Mar 2, 2026
094,448188,896283,343377,79120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 15 buys / 32 sellsCOVERAGE · 21 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CSGP
COSTAR GROUP, INC.
PURCHASE
President, Marketplaces
20,000$45.33$906.6K279,851Mar 2, 2026Mar 3, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
11,096$44.63$495.2K259,851Mar 1, 2026Mar 3, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
39,652——39,652Feb 27, 2026Mar 3, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
17,583——273,096Feb 19, 2026Feb 23, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,149$49.07$105.5K270,947Feb 19, 2026Feb 23, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,424$44.99$109.1K290,679Feb 15, 2026Feb 18, 2026 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
25,000$90.33$2.26M293,103Aug 28, 2025Sep 2, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
1,436$95.19$136.7K318,103Aug 1, 2025Aug 5, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
25,000$93.23$2.33M319,539Jul 28, 2025Jul 29, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
25,000$81.10$2.03M344,539Jun 11, 2025Jun 12, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
8,252$76.25$629.2K369,539Mar 1, 2025Mar 3, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
97,600——377,791Feb 20, 2025Feb 24, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
24,600——24,600Feb 20, 2025Feb 24, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,349$74.06$174.0K293,245Feb 15, 2025Feb 19, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
6,602$73.27$483.7K280,191Feb 13, 2025Feb 24, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
6,452——286,793Feb 13, 2025Feb 24, 2025 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
12,738——295,594Jul 26, 2024Jul 30, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,500$88.43$221.1K282,856May 16, 2024May 17, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
6,351$87.03$552.7K285,356Mar 1, 2024Mar 5, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
8,000——227,428Feb 22, 2024Feb 26, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
69,160——291,707Feb 22, 2024Feb 26, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
17,000——17,000Feb 22, 2024Feb 26, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
4,881$83.98$409.9K222,547Feb 22, 2024Feb 26, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,349$82.32$193.4K235,428Feb 15, 2024Feb 20, 2024 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
30,000$80.24$2.41M237,887Jun 7, 2023Jun 9, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
10,743$67.62$726.4K267,887Mar 15, 2023Mar 17, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
6,388$70.66$451.4K283,014Mar 1, 2023Mar 3, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,259$76.78$173.4K289,402Feb 15, 2023Feb 16, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
14,279——243,841Feb 14, 2023Feb 16, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
47,820——291,661Feb 14, 2023Feb 16, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
12,300——12,300Feb 14, 2023Feb 16, 2023 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
3,157$61.01$192.6K258,120Mar 1, 2022Mar 3, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
44,540——261,277Feb 16, 2022Feb 18, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
22,600——22,600Feb 16, 2022Feb 18, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
11,933$67.69$807.7K216,737Feb 16, 2022Feb 18, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
7,141——228,670Feb 16, 2022Feb 18, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
5,759$65.99$380.0K235,811Feb 15, 2022Feb 18, 2022 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASE
President, Marketplaces
5,067$342.13$1.73M31,991Mar 23, 2021Mar 25, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASE
President, Marketplaces
2,767$204.91$567.0K26,924Mar 23, 2021Mar 25, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
2,767——0Mar 23, 2021Mar 25, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
5,067——0Mar 23, 2021Mar 25, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
7,834$831.70$6.52M24,157Mar 23, 2021Mar 25, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
1,578$823.76$1.30M24,157Feb 28, 2021Mar 2, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
200——25,735Feb 28, 2021Mar 2, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
1,900——1,900Feb 18, 2021Feb 19, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
PURCHASEGRANT
Stock grant
4,500——25,935Feb 18, 2021Feb 19, 2021 ↗View →
CSGP
COSTAR GROUP, INC.
SALE
President, Marketplaces
641$939.76$602.4K21,435Feb 15, 2021Feb 17, 2021 ↗View →
Other insiders · CSGP
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About this filer
CIK 0001500076
ROLE
President, Marketplaces
PRIMARY
CSGP
COMPANIES
1
ACTIVE SINCE
Feb 2021
MARKETPEEL · /INSIDER/0001500076DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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