CoStar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Apr 28, 2026	36.85	37.39	35.90	36.12	-	-0.33%	3,999,878
Apr 27, 2026	36.20	36.98	36.08	36.24	36.24	-0.55%	5,667,273
Apr 24, 2026	37.30	37.49	36.04	36.44	36.44	-2.51%	4,343,258
Apr 23, 2026	38.48	38.70	36.56	37.38	37.38	-3.59%	6,626,643
Apr 22, 2026	39.13	39.62	37.77	38.77	38.77	-0.36%	4,509,745
Apr 21, 2026	40.16	41.03	38.77	38.91	38.91	-2.87%	4,004,298
Apr 20, 2026	39.70	40.32	39.36	40.06	40.06	0.86%	3,782,864
Apr 17, 2026	40.58	40.94	39.52	39.72	39.72	-0.80%	3,994,095
Apr 16, 2026	39.77	40.41	39.57	40.04	40.04	1.86%	6,694,113
Apr 15, 2026	38.05	39.52	37.64	39.31	39.31	4.55%	6,507,525
Apr 14, 2026	36.81	38.35	36.81	37.60	37.60	1.46%	7,372,275
Apr 13, 2026	36.14	37.26	34.75	37.06	37.06	1.59%	11,553,967
Apr 10, 2026	37.30	37.50	35.77	36.48	36.48	-2.25%	5,175,738
Apr 9, 2026	38.28	38.44	36.91	37.32	37.32	-3.86%	5,767,003
Apr 8, 2026	40.73	41.13	38.48	38.82	38.82	-1.67%	6,050,958
Apr 7, 2026	41.11	41.25	39.44	39.48	39.48	-4.12%	4,277,357
Apr 6, 2026	39.92	41.29	39.64	41.18	41.18	3.07%	5,477,095
Apr 2, 2026	39.65	40.84	38.70	39.95	39.95	0.81%	5,798,078
Apr 1, 2026	40.34	40.34	38.69	39.63	39.63	-1.76%	5,478,429
Mar 31, 2026	41.50	41.63	39.57	40.34	40.34	-1.32%	5,482,177
Mar 30, 2026	40.16	41.07	40.04	40.88	40.88	2.79%	6,667,863
Mar 27, 2026	41.07	41.43	39.18	39.77	39.77	-3.70%	6,295,307
Mar 26, 2026	40.95	42.71	40.95	41.30	41.30	-0.27%	4,984,292
Mar 25, 2026	41.84	42.12	40.33	41.41	41.41	-0.12%	5,753,119
Mar 24, 2026	42.32	42.52	40.78	41.46	41.46	-3.38%	4,557,034
Mar 23, 2026	43.67	43.75	41.79	42.91	42.91	0.02%	7,209,377
Mar 20, 2026	42.24	43.27	41.96	42.90	42.90	0.19%	15,183,228
Mar 19, 2026	42.73	43.57	41.84	42.82	42.82	-0.67%	6,127,139
Mar 18, 2026	43.53	44.13	42.65	43.11	43.11	-2.58%	8,457,747
Mar 17, 2026	44.07	45.21	43.62	44.25	44.25	1.44%	4,299,039
Mar 16, 2026	43.95	44.10	43.45	43.62	43.62	-0.02%	5,904,999
Mar 13, 2026	43.71	44.27	42.94	43.63	43.63	0.62%	5,270,621
Mar 12, 2026	45.01	46.34	43.29	43.36	43.36	-4.37%	6,289,529
Mar 11, 2026	46.46	47.15	44.83	45.34	45.34	-2.14%	5,274,605
Mar 10, 2026	47.73	48.32	45.50	46.33	46.33	-4.32%	4,530,916
Mar 9, 2026	48.20	48.93	47.62	48.42	48.42	0.08%	5,632,907
Mar 6, 2026	48.36	48.74	47.64	48.38	48.38	-1.08%	3,959,580
Mar 5, 2026	47.48	49.03	47.27	48.91	48.91	2.75%	5,873,209
Mar 4, 2026	46.81	48.25	46.81	47.60	47.60	1.75%	4,337,597
Mar 3, 2026	45.88	47.37	44.78	46.78	46.78	3.56%	5,592,341
Mar 2, 2026	43.58	45.38	43.16	45.17	45.17	1.21%	6,342,211
Feb 27, 2026	43.99	45.41	43.74	44.63	44.63	-0.82%	8,059,250
Feb 26, 2026	45.54	46.12	44.79	45.00	45.00	0.49%	7,624,626
Feb 25, 2026	46.59	47.10	43.17	44.78	44.78	-8.89%	11,638,484
Feb 24, 2026	47.56	49.75	47.33	49.15	49.15	2.67%	5,596,597
Feb 23, 2026	49.39	50.07	47.81	47.87	47.87	-4.01%	7,213,625
Feb 20, 2026	50.05	52.08	49.43	49.87	49.87	1.63%	7,901,807
Feb 19, 2026	48.53	49.48	48.05	49.07	49.07	0.27%	5,216,206
Feb 18, 2026	46.37	49.07	46.37	48.94	48.94	7.00%	7,988,327
Feb 17, 2026	44.97	45.82	43.80	45.74	45.74	1.67%	8,854,784
Feb 13, 2026	45.34	45.90	44.55	44.99	44.99	-0.09%	5,526,701
Feb 12, 2026	47.72	48.04	43.92	45.03	45.03	-5.93%	10,330,062
Feb 11, 2026	50.31	50.31	46.78	47.87	47.87	-5.86%	6,227,631
Feb 10, 2026	50.20	52.35	50.20	50.85	50.85	-0.22%	5,956,289
Feb 9, 2026	49.64	51.36	48.56	50.96	50.96	1.35%	8,650,054
Feb 6, 2026	51.13	51.69	48.76	50.28	50.28	-1.39%	6,756,617
Feb 5, 2026	52.78	53.32	50.72	50.99	50.99	-2.58%	7,443,178
Feb 4, 2026	52.14	53.38	50.59	52.34	52.34	1.18%	11,033,563
Feb 3, 2026	60.13	60.39	51.57	51.73	51.73	-15.45%	12,882,747
Feb 2, 2026	61.46	62.67	61.04	61.18	61.18	-0.52%	6,010,924
Jan 30, 2026	61.51	62.38	60.77	61.50	61.50	-0.69%	4,662,902
Jan 29, 2026	65.31	65.46	61.61	61.93	61.93	-5.02%	4,517,349
Jan 28, 2026	66.98	67.68	65.15	65.20	65.20	-1.54%	4,374,831
Jan 27, 2026	69.28	70.57	65.69	66.22	66.22	0.62%	17,993,361
Jan 26, 2026	65.95	67.06	65.75	65.81	65.81	0.32%	4,026,603
Jan 23, 2026	65.72	66.68	65.26	65.60	65.60	-1.00%	4,985,944
Jan 22, 2026	64.87	67.79	64.69	66.26	66.26	2.30%	7,257,174
Jan 21, 2026	63.98	64.96	62.81	64.77	64.77	1.49%	6,367,541
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