Costar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 30, 2026	17.72	17.72	16.19	16.33	-	-2.22%	1,919,900
Oct 29, 2026	17.72	17.72	16.70	16.70	-	-2.05%	2,164,566
Oct 28, 2026	17.11	17.38	16.96	17.05	17.05	-0.35%	2,942,507
Oct 27, 2026	18.01	18.32	17.10	17.11	17.11	-5.00%	3,374,400
Oct 26, 2026	17.95	18.27	17.63	18.01	18.01	-0.99%	2,936,200
Oct 23, 2026	17.72	18.25	16.91	18.19	18.19	0.39%	5,010,827
Oct 22, 2026	18.17	18.57	18.05	18.12	18.12	0.11%	4,031,500
Oct 21, 2026	18.10	18.45	18.08	18.10	18.10	-	2,234,601
Oct 20, 2026	18.33	18.39	17.93	18.10	18.10	-2.22%	3,075,461
Oct 19, 2026	17.78	18.69	17.78	18.51	18.51	3.41%	4,696,922
Oct 16, 2026	17.70	18.30	17.56	17.90	17.90	2.58%	2,573,692
Oct 15, 2026	17.88	17.88	17.40	17.45	17.45	-2.68%	2,291,129
Oct 14, 2026	18.29	18.29	17.90	17.93	17.93	-2.02%	1,315,222
Oct 13, 2026	17.85	18.43	17.66	18.30	18.30	1.16%	2,282,716
Oct 12, 2026	18.26	18.37	17.83	18.09	18.09	-1.15%	1,292,200
Oct 9, 2026	18.42	18.42	17.69	18.30	18.30	-0.71%	2,514,832
Oct 8, 2026	18.83	19.12	18.31	18.43	18.43	-4.06%	3,391,688
Sep 30, 2026	19.12	19.86	19.05	19.21	19.21	0.84%	4,632,611
Sep 29, 2026	18.92	19.16	18.70	19.05	19.05	0.69%	1,947,919
Sep 28, 2026	18.99	19.00	18.45	18.92	18.92	-0.73%	4,319,092
Sep 24, 2026	19.21	19.30	19.02	19.06	19.06	-0.78%	1,401,100
Sep 23, 2026	19.48	19.48	19.00	19.21	19.21	-0.62%	1,809,201
Sep 22, 2026	19.60	19.61	19.27	19.33	19.33	-0.41%	1,624,301
Sep 21, 2026	19.45	19.48	19.12	19.41	19.41	0.31%	2,414,900
Sep 18, 2026	19.05	19.44	19.01	19.35	19.35	1.90%	2,821,801
Sep 17, 2026	19.05	19.25	18.85	18.99	18.99	-0.31%	1,738,400
Sep 16, 2026	18.58	19.13	18.56	19.05	19.05	1.93%	2,073,550
Sep 15, 2026	18.90	19.05	18.69	18.69	18.69	-2.04%	2,723,200
Sep 14, 2026	19.34	19.72	19.00	19.08	19.08	-2.45%	3,474,598
Sep 11, 2026	19.06	19.86	18.89	19.56	19.56	1.77%	5,054,600
Sep 10, 2026	19.49	19.49	19.10	19.22	19.22	-1.49%	2,087,940
Sep 9, 2026	19.33	19.68	19.17	19.51	19.51	1.14%	3,623,159
Sep 8, 2026	19.39	19.50	19.22	19.29	19.29	-0.57%	2,900,059
Sep 7, 2026	19.78	19.84	19.31	19.40	19.40	-2.22%	3,607,973
Sep 4, 2026	19.78	20.16	19.68	19.84	19.84	0.35%	4,560,783
Sep 3, 2026	20.12	20.21	19.61	19.77	19.77	-3.28%	6,476,927
Sep 2, 2026	19.47	20.58	19.44	20.44	20.44	3.86%	9,619,014
Sep 1, 2026	19.30	19.75	19.17	19.68	19.68	1.65%	3,591,889
Aug 31, 2026	19.01	19.45	19.01	19.36	19.36	1.57%	2,804,500
Aug 28, 2026	18.84	19.48	18.78	19.06	19.06	1.22%	3,453,402
Aug 27, 2026	18.51	18.94	18.41	18.83	18.83	1.73%	2,665,700
Aug 26, 2026	18.35	18.76	18.31	18.51	18.51	0.11%	1,769,200
Aug 25, 2026	17.82	18.55	17.81	18.49	18.49	2.44%	2,408,433
Aug 24, 2026	18.19	18.30	17.90	18.05	18.05	-0.82%	1,460,400
Aug 21, 2026	18.18	18.28	17.81	18.20	18.20	0.11%	1,153,000
Aug 20, 2026	17.76	18.30	17.76	18.18	18.18	2.02%	1,861,435
Aug 19, 2026	18.74	18.76	17.71	17.82	17.82	-5.31%	3,283,049
Aug 18, 2026	19.39	19.39	18.69	18.82	18.82	-2.03%	2,952,202
Aug 17, 2026	19.15	19.30	19.03	19.21	19.21	-0.05%	2,303,300
Aug 14, 2026	19.00	19.29	18.97	19.22	19.22	0.89%	2,501,200