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CoStar Group, Inc. (CSGP) stock

CSGPNasdaqServices-Business Services, NECFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 28, 2026Score 9/3083% above fair value
$30.17+2.03 (+7.21%)

Close on Oct 30, 2026Market cap $12.22BP/E 158.8Yield –

Price history

CoStar share prices for every month, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$30.17
+7.21% on the day
52-week range
$25.89 – $70.76
-57.4% from the high
Change over 52 weeks
-56.7%
From $69.64 on Oct 30, 2025
Average volume
6.82M
Shares a day, last 90 sessions
MonthOpenHighLowCloseChangeVolume
Oct 2026$27.91$35.63$26.86$30.17+10.11%138,678,018
Sep 2026$32.00$32.79$26.52$27.40-14.56%131,191,528
Aug 2026$29.47$33.82$29.26$32.07+11.51%144,876,832
Jul 2026$29.08$31.40$25.89$28.76+1.55%171,529,584
Jun 2026$32.62$34.82$28.18$28.32-12.05%161,771,095
May 2026$35.28$36.09$31.36$32.20-6.96%166,934,706
Apr 2026$40.34$41.29$33.32$34.61-14.20%133,733,706
Mar 2026$43.58$49.03$39.18$40.34-9.61%134,024,839
Feb 2026$61.46$62.67$43.17$44.63-27.43%150,911,466
Jan 2026$67.11$70.57$57.01$61.50-8.54%144,456,443
Dec 2025$67.97$69.30$62.00$67.24-2.27%81,200,595
Nov 2025$67.85$70.63$64.72$68.80-0.01%87,963,928
Oct 2025$84.22$85.24$63.82$68.81-18.44%84,730,086
Sep 2025$88.87$91.89$82.79$84.37-5.72%57,025,088
Aug 2025$94.70$97.43$84.57$89.49-5.99%56,718,724
Jul 2025$80.40$97.15$79.94$95.19+18.40%64,154,537
Jun 2025$72.84$83.48$71.35$80.40+9.30%58,784,183
May 2025$74.74$78.56$71.94$73.56-0.82%64,611,452
Apr 2025$78.79$83.68$71.21$74.17-6.39%83,897,767
Mar 2025$76.01$83.03$74.08$79.23+3.91%76,181,283
Feb 2025$76.52$79.45$72.50$76.25-0.46%70,105,555
Jan 2025$72.17$77.54$68.41$76.60+7.00%47,616,888
Dec 2024$80.70$81.23$69.61$71.59-11.99%52,175,174
Nov 2024$72.71$82.49$70.77$81.34+11.75%52,553,631
Oct 2024$75.36$79.78$68.26$72.79-3.51%75,972,032
Sep 2024$76.82$80.45$73.59$75.44-2.41%44,355,211
Aug 2024$78.11$78.59$71.69$77.30-0.92%41,784,148
Jul 2024$73.93$81.63$70.86$78.02+5.23%57,731,287
Jun 2024$78.49$79.83$71.90$74.14-5.16%61,309,394
May 2024$90.20$92.74$77.37$78.17-14.60%36,861,766
Apr 2024$96.98$96.98$83.16$91.53-5.25%46,307,672
Mar 2024$87.03$100.38$84.93$96.60+11.00%51,198,953
Feb 2024$83.88$87.49$79.82$87.03+4.25%49,993,853
Jan 2024$86.87$86.87$80.17$83.48-4.47%34,850,991
Dec 2023$82.76$89.11$81.73$87.39+5.24%39,918,237
Nov 2023$73.38$84.80$72.30$83.04+13.12%38,374,834
Oct 2023$76.78$82.83$67.35$73.41-4.53%50,138,903
Sep 2023$82.93$84.16$75.78$76.89-6.22%31,902,083
Aug 2023$83.38$83.50$77.17$81.99-2.36%28,628,579
Jul 2023$88.24$92.30$80.07$83.97-5.65%59,980,089
Jun 2023$79.62$92.36$78.72$89.00+12.09%97,686,308
May 2023$77.09$80.07$73.06$79.40+3.18%32,652,784
Apr 2023$68.46$78.62$67.22$76.95+11.76%36,529,724
Mar 2023$70.30$72.83$65.12$68.85-2.56%47,525,744
Feb 2023$77.88$80.35$69.62$70.66-9.29%53,977,479
Jan 2023$78.29$81.15$74.16$77.90+0.80%33,913,825
Dec 2022$81.15$85.06$75.61$77.28-4.64%63,510,571
Nov 2022$83.70$85.37$77.81$81.04-2.03%50,546,678
Oct 2022$70.16$83.44$68.86$82.72+18.77%50,762,474
Sep 2022$69.04$79.26$67.52$69.65+0.01%123,269,241
Aug 2022$71.92$75.96$69.08$69.64-4.06%27,531,839
Jul 2022$60.31$72.74$57.54$72.59+20.16%35,662,419
Jun 2022$61.24$64.00$54.02$60.41-0.87%44,157,465
May 2022$63.72$64.66$53.51$60.94-4.21%42,650,929
Apr 2022$66.70$68.39$59.89$63.62-4.49%40,163,993
Mar 2022$61.11$70.18$53.25$66.61+9.18%65,574,203
Feb 2022$70.43$71.50$49.00$61.01-13.04%64,371,420
Jan 2022$79.35$79.73$64.78$70.16-11.22%41,697,937
Dec 2021$79.45$80.83$75.09$79.03+1.63%43,233,666
Nov 2021$86.13$86.26$77.37$77.76-9.63%34,291,037

Seasonality

CSGP return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average3.0%-3.6%1.0%2.0%-0.7%2.6%8.3%0.4%-4.2%-1.2%4.5%-2.7%
Months up6 of 104 of 106 of 106 of 105 of 106 of 109 of 103 of 102 of 103 of 106 of 93 of 9
2026-8.5%-27.4%-9.6%-14.2%-7.0%-12.0%1.6%11.5%-14.6%10.1%
20257.0%-0.5%3.9%-6.4%-0.8%9.3%18.4%-6.0%-5.7%-18.4%-0.0%-2.3%
2024-4.5%4.3%11.0%-5.2%-14.6%-5.2%5.2%-0.9%-2.4%-3.5%11.7%-12.0%
20230.8%-9.3%-2.6%11.8%3.2%12.1%-5.7%-2.4%-6.2%-4.5%13.1%5.2%
2022-11.2%-13.0%9.2%-4.5%-4.2%-0.9%20.2%-4.1%0.0%18.8%-2.0%-4.6%
2021-2.7%-8.4%-0.2%4.0%-0.1%-3.0%7.3%-4.6%1.6%-0.0%-9.6%1.6%
20209.1%2.2%-12.0%10.4%1.3%8.2%19.6%-0.1%-0.0%-2.9%10.6%1.5%
201915.8%17.1%1.9%6.4%2.7%8.7%11.1%-0.1%-3.5%-7.4%11.5%-2.4%
201816.6%-1.1%6.0%1.1%4.0%8.2%0.8%6.3%-4.8%-14.1%2.2%-8.7%
20177.2%0.5%2.0%16.2%8.6%0.8%4.5%4.0%-6.4%10.3%3.1%-2.6%