CoStar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Feb 23, 2026	49.39	50.07	47.81	47.87	47.87	-4.01%	7,208,782
Feb 20, 2026	50.05	52.08	49.43	49.87	49.87	1.63%	7,877,812
Feb 19, 2026	48.53	49.48	48.05	49.07	49.07	0.27%	5,214,513
Feb 18, 2026	46.37	49.07	46.37	48.94	48.94	7.00%	7,953,634
Feb 17, 2026	44.97	45.82	43.80	45.74	45.74	1.67%	8,853,812
Feb 13, 2026	45.34	45.90	44.55	44.99	44.99	-0.09%	5,453,823
Feb 12, 2026	47.72	48.04	43.92	45.03	45.03	-5.93%	10,302,976
Feb 11, 2026	50.31	50.31	46.78	47.87	47.87	-5.86%	6,215,646
Feb 10, 2026	50.20	52.35	50.20	50.85	50.85	-0.22%	5,790,917
Feb 9, 2026	49.64	51.36	48.56	50.96	50.96	1.35%	8,255,061
Feb 6, 2026	51.13	51.69	48.76	50.28	50.28	-1.39%	6,740,889
Feb 5, 2026	52.78	53.32	50.72	50.99	50.99	-2.58%	7,440,534
Feb 4, 2026	52.14	53.38	50.59	52.34	52.34	1.18%	11,027,024
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