CoStar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Apr 27, 2026	36.20	36.98	36.08	36.38	-	-0.16%	1,974,684
Apr 24, 2026	37.30	37.49	36.04	36.44	36.44	-2.51%	4,253,857
Apr 23, 2026	38.48	38.70	36.56	37.38	37.38	-3.59%	6,534,432
Apr 22, 2026	39.13	39.62	37.77	38.77	38.77	-0.36%	4,504,643
Apr 21, 2026	40.16	41.03	38.77	38.91	38.91	-2.87%	3,937,043
Apr 20, 2026	39.70	40.32	39.36	40.06	40.06	0.86%	3,781,340
Apr 17, 2026	40.58	40.94	39.52	39.72	39.72	-0.80%	3,990,244
Apr 16, 2026	39.77	40.41	39.57	40.04	40.04	1.86%	6,692,563
Apr 15, 2026	38.05	39.52	37.64	39.31	39.31	4.55%	6,501,175
Apr 14, 2026	36.81	38.35	36.81	37.60	37.60	1.46%	6,962,136
Apr 13, 2026	36.14	37.26	34.75	37.06	37.06	1.59%	11,553,106
Apr 10, 2026	37.30	37.50	35.77	36.48	36.48	-2.25%	5,174,459
Apr 9, 2026	38.28	38.44	36.91	37.32	37.32	-3.86%	5,730,511
Apr 8, 2026	40.73	41.13	38.48	38.82	38.82	-1.67%	6,041,593
Apr 7, 2026	41.11	41.25	39.44	39.48	39.48	-4.12%	4,261,096
Apr 6, 2026	39.92	41.29	39.64	41.18	41.18	3.07%	5,464,415
Apr 2, 2026	39.65	40.84	38.70	39.95	39.95	0.81%	5,732,551
Apr 1, 2026	40.34	40.34	38.69	39.63	39.63	-1.76%	5,477,859
Mar 31, 2026	41.50	41.63	39.57	40.34	40.34	-1.32%	5,477,154
Mar 30, 2026	40.16	41.07	40.04	40.88	40.88	2.79%	6,633,720
Mar 27, 2026	41.07	41.43	39.18	39.77	39.77	-3.70%	6,263,905
Mar 26, 2026	40.95	42.71	40.95	41.30	41.30	-0.27%	4,984,287
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