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CSGP
CoStar Group Inc
stockNASDAQ

At CloseNov 13, 2026 3:59:59 PM EST
30.96USD+2.857%(+0.86)3,185,465
Pre-marketNov 13, 2026 8:12:30 AM EST
30.09USD-0.033%(-0.01)
After-hoursNov 13, 2026 4:00:30 PM EST
30.92USD-0.129%(-0.04)
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Real Estate
Real Estate Services
CEO
Andrew C. Florance
HQ
Washington, DC, USA
Previous Close
$30.10
Beta
0.07
52-Week High
$70.57 2026-01-27
52-Week Low
$25.89 2026-07-29
SMA 50
$30.15
SMA 200
$35.14
Avg. Vol 10D
5.50M
Avg. Vol 30D
5.98M
Avg. Vol 90D
6.70M
Relative Vol
0.45
402.34M
398.69M
12,499,298
0.4100%
4,800,000
16,723
Jun 28, 2021 · 10-for-1
Nov 14, 2026
Nov 13, 2026
Nov 12, 2026
Nov 11, 2026
CSGP Profile

costar group, inc. (nasdaq: csgp) is the leading provider of commercial real estate information, analytics and online marketplaces. founded in 1987, costar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information. our suite of online services enables clients to analyze, interpret and gain unmatched insight on commercial property values, market conditions and current availabilities. loopnet is the most heavily trafficked commercial real estate marketplace online with more than 9.8 million registered members. apartments.com, apartmentfinder.com and apartmenthomeliving.com form the premier online apartment resource for renters seeking great apartment homes and provide property managers and owners a proven platform for marketing their properties. costar group operates websites with over 23.6 million unique monthly visitors in aggregate as of june 2015. headquartered in washington, dc, costar maintains off

CSGP Performance
PeriodPriceDateChangeBeta
1W30.552026-11-06+1.34%1.364
1M30.002026-10-13+3.20%-0.308
3M33.052026-08-13-6.32%-0.091
6M31.972026-05-13-3.16%-0.352
1Y68.532025-11-13-54.82%0.066
2Y75.772024-11-13-59.14%—
5Y82.862021-11-12-62.64%0.926
CSGP Stock Summary

CoStar Group Inc (NASDAQ:CSGP) stock price today is $30.96, and today's volume is 2,718,470. CSGP is up 2.857% today. The 30 day average volume is 5.98M. CSGP market cap is $12.46B with 402.34M shares outstanding.