Koppers Holdings Inc. (KOP) NYSE

Currency In USD

KOP Historical Return

If you invested $1000 in Koppers Holdings Inc. (KOP) 10 years ago, it would be worth $1,250.77 as of October 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,202.77, while $1000 invested 1 year ago would be worth $1,426.32. This corresponds to total returns of 25.08%, 20.28%, 42.63%, respectively, with annualized returns of 2.26%, 3.76%, 42.63%.

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

KOP Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 22, 2026	40.98	40.75	40.75	41.51	40.48	173,320
October 21, 2026	41.96	41.34	41.34	41.96	40.93	333,659
October 20, 2026	43.08	41.7	41.7	43.56	41.62	101,562
October 19, 2026	43.43	42.91	42.91	43.78	42.82	100,289
October 16, 2026	43.31	43.32	43.32	44.2	43.06	107,918
October 15, 2026	43.92	43.44	43.44	44.39	43.14	110,585
October 14, 2026	43.92	43.67	43.67	44.23	43.12	116,612
October 13, 2026	43.09	44.41	44.41	44.43	42.69	144,417
October 12, 2026	42.92	43.1	43.1	43.6	42.92	115,126
October 09, 2026	44.22	43.41	43.41	44.22	42.88	134,137
October 08, 2026	43.71	44.24	44.24	45.06	43.71	164,792
October 07, 2026	45.21	43.88	43.88	45.54	43.75	140,090
October 06, 2026	47.35	46.03	46.03	47.45	45.97	140,491
October 05, 2026	45.88	47.04	47.04	47.79	45.51	217,471
October 02, 2026	45.81	46.04	46.04	46.39	45.31	158,974
October 01, 2026	45.2	45.19	45.19	45.46	44.33	196,273
September 30, 2026	46.34	45.59	45.59	46.34	45.46	149,788
September 29, 2026	46.26	46.08	46.08	46.44	45.52	103,874
September 28, 2026	46.06	46.17	46.17	46.98	45.95	102,623
September 25, 2026	46	46.27	46.27	46.51	45.51	98,772
September 24, 2026	46.34	45.96	45.96	46.45	45.55	106,977
September 23, 2026	45.98	46.26	46.26	46.43	45.09	125,131
September 22, 2026	45.9	46.1	46.1	46.9	45.82	170,744
September 21, 2026	45.53	45.61	45.61	45.88	45.33	139,041
September 18, 2026	45.98	45.33	45.33	45.98	44.83	460,206
September 17, 2026	47.42	46.18	46.18	47.42	45.83	170,268
September 16, 2026	45.99	46.72	46.72	47.64	45.69	312,881
September 15, 2026	46.12	45.79	45.79	46.4	45.43	150,382
September 11, 2026	46.62	46.35	46.35	47	46.19	110,500
September 10, 2026	45.96	46.35	46.35	46.94	45.71	136,478
September 09, 2026	47.2	46.06	46.06	47.29	45.74	138,065
September 08, 2026	47.94	47.12	47.12	47.94	46.73	174,060
September 04, 2026	46.57	47.78	47.78	47.83	46.22	169,947
September 03, 2026	47.25	46.86	46.86	47.43	46.16	169,431
September 02, 2026	45.84	46.72	46.72	47.94	45.42	203,599
September 01, 2026	45.28	45.93	45.93	46.08	44.49	177,118
August 31, 2026	47.1	45.87	45.87	47.61	45.76	160,842
August 28, 2026	46.74	46.56	46.56	47	46	117,708
August 27, 2026	46.05	46.32	46.32	46.63	45.35	112,910
August 26, 2026	46.56	46.34	46.34	47.09	45.92	149,229
August 25, 2026	45.87	46.13	46.13	46.62	44.81	108,672
August 24, 2026	45.43	45.83	45.83	46	44.89	145,672
August 21, 2026	45.88	45.19	45.19	46.74	44.16	313,678
August 20, 2026	44.47	45.88	45.88	46.27	44.47	194,312
August 19, 2026	45.72	44.9	44.9	47.02	44.76	157,276
August 18, 2026	47.29	45.44	45.44	47.82	45.15	162,763
August 17, 2026	47.05	47.45	47.45	47.57	46.13	167,452
August 14, 2026	46.14	47.14	47.14	47.41	45.89	220,249
August 13, 2026	45.36	46.22	46.22	46.72	44.91	195,362
August 12, 2026	46.38	45.34	45.34	46.74	44.1	338,961
August 11, 2026	50	46.01	46.01	50.2	45.8	0
August 10, 2026	51.01	50.54	50.54	51.49	49.62	200,379
August 07, 2026	51.15	51.24	51.24	51.31	48.8	478,655
August 06, 2026	48.63	52.33	52.33	53	47.81	251,529
August 05, 2026	51.68	51.03	51.03	52.05	50.96	156,032
August 04, 2026	50.47	51.99	51.99	52.15	49.83	175,924
August 03, 2026	49.46	50.73	50.73	51.06	48.98	144,832
July 31, 2026	48.41	49.02	49.02	49.6	47.81	145,859
July 30, 2026	49.57	48.98	48.98	50.29	48.57	135,162
July 29, 2026	50.54	49.21	49.21	51.45	48.67	135,190