CoStar Group, Inc. (CSGP) NASDAQ

Currency In USD

CSGP Historical Return

If you invested $1000 in CoStar Group, Inc. (CSGP) 10 years ago, it would be worth $1,540.04 as of October 18, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $340.32, while $1000 invested 1 year ago would be worth $431.03. This corresponds to total returns of 54%, -65.97%, -56.9%, respectively, with annualized returns of 4.41%, -19.38%, -56.9%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

CSGP Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 16, 2026	32.39	32.31	32.31	32.65	31.59	5.77M
October 15, 2026	30.59	32	32	32.49	30.45	5.55M
October 14, 2026	29.98	30.11	30.11	30.21	29.3	5.38M
October 13, 2026	29.48	30	30	30.02	29.11	7.36M
October 12, 2026	29.67	29.21	29.21	29.9	29.03	2.76M
October 09, 2026	30.02	29.67	29.67	30.16	29.54	4.09M
October 08, 2026	27.6	29.81	29.81	29.83	27.58	9.47M
October 07, 2026	27.77	27.6	27.6	27.87	27.17	4.95M
October 06, 2026	27.7	27.63	27.63	28.2	27.46	4.58M
October 05, 2026	27.25	27.66	27.66	27.68	27.18	4.93M
October 02, 2026	27.48	27.38	27.38	27.81	27.15	3.74M
October 01, 2026	27.91	27.72	27.72	28.23	27.1	4.61M
September 30, 2026	27.03	27.4	27.4	27.55	26.86	6.69M
September 29, 2026	26.84	26.95	26.95	27.18	26.52	5.19M
September 28, 2026	27.68	27.02	27.02	27.75	26.85	5.18M
September 25, 2026	27.73	28.09	28.09	28.63	27.6	6.35M
September 24, 2026	28.18	27.86	27.86	28.54	27.28	6.4M
September 23, 2026	28.69	28.26	28.26	28.69	27.89	5.61M
September 22, 2026	29.63	28.77	28.77	29.63	28.31	5.26M
September 21, 2026	29.24	29.04	29.04	29.64	28.84	6.95M
September 18, 2026	29.3	29.09	29.09	29.91	28.96	17.12M
September 17, 2026	30.48	29.3	29.3	30.59	29.24	4.82M
September 16, 2026	31.25	30.36	30.36	31.43	30.27	4.67M
September 15, 2026	31.15	31.56	31.56	31.79	30.7	6.72M
September 11, 2026	29.72	30.46	30.46	30.6	29.71	6.19M
September 10, 2026	29.64	29.49	29.49	30.14	28.79	7.23M
September 09, 2026	30.02	29.58	29.58	30.29	29.33	4.45M
September 08, 2026	30.55	30.34	30.34	30.63	29.66	6.05M
September 04, 2026	31.25	30.91	30.91	31.33	30.32	3.88M
September 03, 2026	31.84	31.68	31.68	32.79	31.22	4.54M
September 02, 2026	31.97	31.26	31.26	32.65	31.2	5.14M
September 01, 2026	32	31.98	31.98	32.46	31.4	6.09M
August 31, 2026	31.95	32.07	32.07	32.59	31.79	33.4M
August 28, 2026	31.71	32.22	32.22	32.59	31.45	4.34M
August 27, 2026	32.05	31.34	31.34	32.49	31.29	5.4M
August 26, 2026	32.31	32.14	32.14	32.92	31.74	4.8M
August 25, 2026	32.59	32.81	32.81	33.28	32.25	4.92M
August 24, 2026	32.52	32.84	32.84	32.9	32.29	5.03M
August 21, 2026	32.51	32.26	32.26	33.26	31.99	4.75M
August 20, 2026	33.46	32.26	32.26	33.63	31.72	6.59M
August 19, 2026	31.28	33.73	33.73	33.82	31.2	5.81M
August 18, 2026	32.03	31.38	31.38	32.3	31.3	3.85M
August 17, 2026	31.95	31.35	31.35	32.15	30.99	4.89M
August 14, 2026	33.28	32.38	32.38	33.3	31.86	6M
August 13, 2026	30.68	33.05	33.05	33.1	30.68	7.96M
August 12, 2026	30.65	30.5	30.5	31.08	30.22	4.27M
August 11, 2026	31.25	31.12	31.12	31.52	30.65	4.04M
August 10, 2026	30.04	31.48	31.48	31.49	30.04	5.84M
August 07, 2026	30.05	30.24	30.24	31.68	30.04	6.18M
August 06, 2026	29.89	29.58	29.58	30.22	29.27	7.09M
August 05, 2026	30.61	30.21	30.21	30.75	29.53	6.57M
August 04, 2026	29.42	29.82	29.82	30.07	29.35	5.66M
August 03, 2026	29.47	30.03	30.03	30.18	29.26	6.03M
July 31, 2026	29.02	28.76	28.76	29.38	28.38	7.32M
July 30, 2026	28.27	29.46	29.46	29.57	28.13	12.05M
July 29, 2026	26.03	29.83	29.83	30.45	25.89	17.57M
July 28, 2026	29.9	30.33	30.33	31.4	29.75	9.1M
July 27, 2026	28.05	29.17	29.17	29.92	28.04	8.66M
July 24, 2026	27.28	27.66	27.66	28.09	27.09	6.85M
July 23, 2026	27.89	27.14	27.14	28.03	26.77	7.12M