CoStar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Feb 3, 2026	60.13	60.39	51.57	51.73	51.73	-15.45%	12,741,796
Feb 2, 2026	61.46	62.67	61.04	61.18	61.18	-0.52%	6,009,684
Jan 30, 2026	61.51	62.38	60.77	61.50	61.50	-0.69%	4,662,720
Jan 29, 2026	65.31	65.46	61.61	61.93	61.93	-5.02%	4,516,339
Jan 28, 2026	66.98	67.68	65.15	65.20	65.20	-1.54%	4,236,025
Jan 27, 2026	69.28	70.57	65.69	66.22	66.22	0.62%	17,794,188
Jan 26, 2026	65.95	67.06	65.75	65.81	65.81	0.32%	4,021,658
Jan 23, 2026	65.72	66.68	65.26	65.60	65.60	-1.00%	4,984,532
Jan 22, 2026	64.87	67.79	64.69	66.26	66.26	2.30%	6,983,298
Jan 21, 2026	63.98	64.96	62.81	64.77	64.77	1.49%	6,366,460
Jan 20, 2026	64.09	64.81	63.17	63.82	63.82	-2.33%	5,721,396
Jan 16, 2026	63.41	65.93	63.14	65.34	65.34	3.09%	7,622,875
Jan 15, 2026	63.97	64.58	62.08	63.38	63.38	-0.77%	5,471,880
Jan 14, 2026	61.42	63.93	61.14	63.87	63.87	3.32%	8,203,352
Jan 13, 2026	58.91	62.52	58.14	61.82	61.82	4.25%	12,699,286
Jan 12, 2026	58.49	59.44	57.01	59.30	59.30	1.38%	8,883,496
Jan 9, 2026	61.36	61.83	58.41	58.49	58.49	-4.68%	7,690,623
Jan 8, 2026	60.61	62.89	60.19	61.36	61.36	-0.49%	8,338,141
Jan 7, 2026	68.26	68.98	61.57	61.66	61.66	-8.24%	13,759,011
Jan 6, 2026	66.02	67.64	65.23	67.20	67.20	1.17%	3,143,273
Jan 5, 2026	65.60	67.38	65.22	66.42	66.42	1.11%	4,369,181
Jan 2, 2026	67.11	67.22	65.23	65.69	65.69	-2.31%	4,368,222
Dec 31, 2025	67.86	67.86	67.00	67.24	67.24	-0.91%	2,069,592
Dec 30, 2025	67.24	67.96	66.98	67.86	67.86	0.38%	2,678,415
Dec 29, 2025	67.09	67.90	66.65	67.60	67.60	0.88%	3,300,912
Dec 26, 2025	66.72	67.18	66.48	67.01	67.01	0.18%	2,295,058
Dec 24, 2025	66.34	67.27	66.30	66.89	66.89	0.38%	992,758
Dec 23, 2025	66.60	66.88	65.79	66.64	66.64	0.06%	2,723,477
Dec 22, 2025	65.12	66.69	64.97	66.60	66.60	2.10%	4,613,830
Dec 19, 2025	64.41	65.84	63.99	65.23	65.23	0.54%	9,576,214
Dec 18, 2025	65.01	65.50	64.65	64.88	64.88	0.08%	5,129,500
Dec 17, 2025	63.62	65.09	63.60	64.83	64.83	1.90%	5,365,647
Dec 16, 2025	64.00	64.89	63.36	63.62	63.62	-0.20%	4,762,047
Dec 15, 2025	68.25	68.25	62.00	63.75	63.75	-6.57%	8,312,661
Dec 12, 2025	67.92	68.51	67.74	68.23	68.23	1.13%	3,147,285
Dec 11, 2025	67.76	68.50	67.16	67.47	67.47	-0.59%	3,408,400
Dec 10, 2025	67.80	68.58	67.29	67.87	67.87	-0.09%	2,744,006
Dec 9, 2025	66.52	68.49	66.34	67.93	67.93	2.41%	2,774,458
Dec 8, 2025	67.92	67.95	66.08	66.33	66.33	-2.47%	3,429,321
Dec 5, 2025	67.81	68.77	67.47	68.01	68.01	-0.26%	2,950,746
Dec 4, 2025	69.00	69.06	68.08	68.19	68.19	-1.20%	2,329,218
Dec 3, 2025	68.22	69.12	68.03	69.02	69.02	1.20%	2,449,698
Dec 2, 2025	68.33	68.64	67.49	68.20	68.20	0.26%	3,120,829
Dec 1, 2025	67.97	69.30	67.85	68.02	68.02	-1.13%	3,026,523
Nov 28, 2025	68.45	68.90	67.74	68.80	68.80	1.45%	1,806,665
Nov 26, 2025	68.75	69.12	67.78	67.82	67.82	-1.99%	3,287,376
Nov 25, 2025	67.98	69.36	67.16	69.20	69.20	2.44%	3,746,797
Nov 24, 2025	67.42	68.27	66.95	67.55	67.55	0.45%	10,979,939
Nov 21, 2025	65.98	67.59	65.90	67.25	67.25	2.64%	5,769,901
Nov 20, 2025	66.73	66.81	64.72	65.52	65.52	-0.76%	5,403,137