CoStar Group Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jun 26, 2026	28.90	30.52	28.84	30.25	30.25	5.62%	8,813,781
Jun 25, 2026	29.31	29.68	28.54	28.64	28.64	-3.92%	6,449,973
Jun 24, 2026	29.89	30.89	29.76	29.81	29.81	-1.49%	6,675,165
Jun 23, 2026	29.73	30.60	29.73	30.26	30.26	3.56%	8,313,803
Jun 22, 2026	30.05	31.04	29.08	29.22	29.22	-2.99%	7,025,719
Jun 18, 2026	30.46	30.73	29.53	30.12	30.12	-1.12%	16,140,782
Jun 17, 2026	31.80	32.56	30.38	30.46	30.46	-4.72%	9,729,243
Jun 16, 2026	32.01	32.72	31.64	31.97	31.97	-0.22%	5,749,256
Jun 15, 2026	32.68	34.08	31.91	32.04	32.04	-2.44%	6,018,636
Jun 12, 2026	32.57	33.19	31.63	32.84	32.84	0.58%	4,914,879
Jun 11, 2026	33.53	34.06	32.33	32.65	32.65	-4.62%	7,751,595
Jun 10, 2026	33.58	34.77	33.16	34.23	34.23	0.88%	6,276,093
Jun 9, 2026	33.05	34.20	32.85	33.93	33.93	1.62%	6,634,971
Jun 8, 2026	33.31	34.04	32.68	33.39	33.39	-1.48%	7,712,673
Jun 5, 2026	33.93	34.27	33.06	33.89	33.89	0.68%	6,998,718
Jun 4, 2026	34.66	34.82	33.13	33.66	33.66	0.78%	7,347,869
Jun 3, 2026	33.51	33.52	32.05	33.40	33.40	-0.77%	9,461,251
Jun 2, 2026	33.08	33.76	31.70	33.66	33.66	-0.59%	9,188,531
Jun 1, 2026	32.62	33.88	32.01	33.86	33.86	5.16%	8,038,388
May 29, 2026	32.65	32.94	31.86	32.20	32.20	-0.31%	7,789,020
May 28, 2026	32.24	32.90	32.00	32.30	32.30	-0.06%	6,749,441
May 27, 2026	32.59	33.48	32.21	32.32	32.32	-0.62%	5,017,978
May 26, 2026	33.61	33.71	32.50	32.52	32.52	-4.21%	5,969,404
May 22, 2026	33.87	34.64	33.61	33.95	33.95	0.06%	4,615,829
May 21, 2026	33.65	34.43	33.03	33.93	33.93	-0.24%	5,411,021
May 20, 2026	33.41	34.26	32.19	34.01	34.01	0.62%	5,009,274
May 19, 2026	33.80	34.86	33.28	33.80	33.80	1.81%	6,596,612
May 18, 2026	32.73	34.34	32.42	33.20	33.20	1.59%	10,165,260
May 15, 2026	31.92	33.02	31.92	32.68	32.68	2.61%	37,834,033
May 14, 2026	31.97	32.58	31.36	31.85	31.85	-0.38%	7,866,867
May 13, 2026	32.41	32.88	31.78	31.97	31.97	-3.27%	8,482,366
May 12, 2026	33.21	33.54	32.21	33.05	33.05	0.39%	8,261,063
May 11, 2026	32.45	33.19	32.09	32.92	32.92	0.46%	8,214,738
May 8, 2026	34.62	34.64	32.71	32.77	32.77	-6.32%	7,105,832
May 7, 2026	34.08	35.59	33.94	34.98	34.98	2.67%	7,712,372
May 6, 2026	34.95	35.26	34.03	34.07	34.07	-2.38%	5,465,988
May 5, 2026	35.23	35.37	33.82	34.90	34.90	-1.36%	5,587,221
May 4, 2026	35.77	35.86	34.69	35.38	35.38	1.90%	6,712,537
May 1, 2026	35.28	36.09	34.35	34.72	34.72	0.32%	6,367,853
Apr 30, 2026	33.76	34.75	33.33	34.61	34.61	1.38%	7,908,176
Apr 29, 2026	35.65	36.53	33.32	34.14	34.14	-5.06%	15,388,135
Apr 28, 2026	36.85	37.39	35.88	35.96	35.96	-0.77%	7,354,880
Apr 27, 2026	36.20	36.98	36.08	36.24	36.24	-0.55%	5,669,066
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