Costar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Apr 27, 2026	20.27	20.83	20.18	20.76	20.76	2.42%	2,915,502
Apr 24, 2026	20.61	20.70	20.20	20.27	20.27	-1.84%	2,880,300
Apr 23, 2026	21.10	21.20	20.50	20.65	20.65	-2.13%	3,564,900
Apr 22, 2026	20.56	21.35	20.39	21.10	21.10	2.23%	5,207,600
Apr 21, 2026	20.56	20.90	20.38	20.64	20.64	-0.29%	4,013,400
Apr 20, 2026	20.24	21.25	20.15	20.70	20.70	2.22%	6,316,400
Apr 17, 2026	19.88	20.27	19.74	20.25	20.25	1.50%	3,205,700
Apr 16, 2026	19.79	20.00	19.63	19.95	19.95	0.76%	2,415,010
Apr 15, 2026	20.00	20.08	19.72	19.80	19.80	-1.00%	2,627,300
Apr 14, 2026	20.16	20.16	19.83	20.00	20.00	0.05%	2,228,200
Apr 13, 2026	19.73	20.00	19.65	19.99	19.99	0.96%	2,099,100
Apr 10, 2026	19.86	20.09	19.79	19.80	19.80	0.30%	3,481,500
Apr 9, 2026	19.36	19.97	19.31	19.74	19.74	0.87%	4,075,300
Apr 8, 2026	19.08	19.59	19.01	19.57	19.57	4.10%	4,615,300
Apr 7, 2026	19.24	19.34	18.75	18.80	18.80	-2.44%	3,183,500
Apr 3, 2026	19.01	19.95	18.33	19.27	19.27	1.85%	5,251,509
Apr 2, 2026	19.29	19.43	18.88	18.92	18.92	-2.02%	3,470,801
Apr 1, 2026	19.60	19.64	19.22	19.31	19.31	0.26%	2,124,310
Mar 31, 2026	19.55	19.64	19.25	19.26	19.26	-1.43%	2,942,171
Mar 30, 2026	19.52	20.05	19.39	19.54	19.54	-1.96%	4,751,303
Mar 27, 2026	19.28	20.13	19.15	19.93	19.93	3.16%	4,384,634
Mar 26, 2026	20.02	20.10	19.29	19.32	19.32	-4.97%	4,807,580
Mar 25, 2026	19.45	20.74	19.24	20.33	20.33	4.52%	7,178,488
Mar 24, 2026	18.70	19.57	18.41	19.45	19.45	6.52%	5,964,878
Mar 23, 2026	19.14	19.14	18.11	18.26	18.26	-5.54%	4,173,182
Mar 20, 2026	20.39	20.41	19.29	19.33	19.33	-3.40%	3,713,147
Mar 19, 2026	20.38	20.59	19.94	20.01	20.01	-2.96%	2,907,300
Mar 18, 2026	20.70	20.79	20.36	20.62	20.62	-0.39%	2,106,803
Mar 17, 2026	21.22	21.25	20.67	20.70	20.70	-2.45%	2,070,600
Mar 16, 2026	21.01	21.22	20.84	21.22	21.22	1.00%	1,775,312
Mar 13, 2026	21.18	21.32	20.97	21.01	21.01	-0.80%	2,187,100
Mar 12, 2026	21.60	21.62	21.15	21.18	21.18	-2.04%	2,652,000
Mar 11, 2026	21.95	22.02	21.58	21.62	21.62	-1.46%	2,495,523
Mar 10, 2026	21.68	22.03	21.68	21.94	21.94	1.25%	2,425,518
Mar 9, 2026	21.60	21.81	21.33	21.67	21.67	-0.96%	2,936,402
Mar 6, 2026	21.86	22.08	21.55	21.88	21.88	-1.17%	3,419,767
Mar 5, 2026	21.68	22.41	21.60	22.14	22.14	4.14%	5,445,796
Mar 4, 2026	21.25	21.58	20.93	21.26	21.26	-0.23%	3,307,741
Mar 3, 2026	22.81	22.84	21.27	21.31	21.31	-6.74%	6,491,734
Mar 2, 2026	22.95	23.19	22.63	22.85	22.85	0.53%	4,654,671
Feb 27, 2026	22.80	22.86	22.68	22.73	22.73	-0.53%	2,319,939
Feb 26, 2026	22.82	22.95	22.76	22.85	22.85	-0.09%	1,933,531
Feb 25, 2026	23.09	23.22	22.84	22.87	22.87	-0.95%	2,579,600
Feb 24, 2026	22.51	23.15	22.51	23.09	23.09	2.76%	3,357,025
Feb 13, 2026	22.43	22.78	22.40	22.47	22.47	0.18%	2,068,498
Feb 12, 2026	22.52	22.63	22.33	22.43	22.43	-0.40%	1,896,101
Feb 11, 2026	22.79	22.81	22.51	22.52	22.52	-1.14%	1,792,600
Feb 10, 2026	22.98	23.00	22.76	22.78	22.78	-0.22%	1,816,100
Feb 9, 2026	22.64	22.89	22.64	22.83	22.83	0.97%	1,919,300
Feb 6, 2026	22.65	22.85	22.33	22.61	22.61	-0.04%	2,904,615