Costar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
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
Aug 13, 2026	19.23	19.38	18.95	19.05	19.05	-0.94%	3,122,467
Aug 12, 2026	19.12	19.39	19.06	19.23	19.23	0.05%	3,156,001
Aug 11, 2026	19.71	19.88	19.20	19.22	19.22	-4.38%	5,655,669
Aug 10, 2026	18.64	20.14	18.49	20.10	20.10	7.66%	8,708,729
Aug 7, 2026	18.60	18.80	18.30	18.67	18.67	-0.53%	2,628,900
Aug 6, 2026	18.67	18.96	18.40	18.77	18.77	-0.21%	3,803,100
Aug 5, 2026	18.60	18.90	18.53	18.81	18.81	1.13%	3,626,300
Aug 4, 2026	18.61	18.74	18.36	18.60	18.60	1.20%	3,298,122
Aug 3, 2026	18.25	18.40	18.07	18.38	18.38	0.33%	2,552,700
Jul 31, 2026	17.94	18.53	17.85	18.32	18.32	0.94%	4,096,600
Jul 30, 2026	18.52	19.06	18.14	18.15	18.15	-3.10%	4,265,800
Jul 29, 2026	18.51	18.87	18.20	18.73	18.73	-0.37%	4,312,809
Jul 28, 2026	19.40	19.62	18.40	18.80	18.80	-6.00%	7,125,903
Jul 27, 2026	18.50	20.24	18.41	20.00	20.00	4.71%	10,592,351
Jul 24, 2026	17.04	19.10	16.99	19.10	19.10	10.02%	8,439,124
Jul 23, 2026	16.55	17.60	16.51	17.36	17.36	4.39%	3,459,200
Jul 22, 2026	16.90	17.01	16.49	16.63	16.63	-2.06%	2,214,600
Jul 21, 2026	17.40	17.40	15.96	16.98	16.98	-1.28%	4,290,625
Jul 20, 2026	18.05	18.15	16.80	17.20	17.20	-3.91%	2,943,048
Jul 17, 2026	18.42	18.55	17.72	17.90	17.90	-3.66%	2,561,787
Jul 16, 2026	18.75	19.03	18.53	18.58	18.58	-1.48%	1,642,000
Jul 15, 2026	18.71	18.94	18.54	18.86	18.86	0.16%	1,519,992
Jul 14, 2026	18.83	19.03	18.28	18.83	18.83	-0.42%	2,167,300
Jul 13, 2026	19.69	19.69	18.80	18.91	18.91	-4.74%	2,986,800