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 $1,551.72 as of September 12, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,476.58, while $1000 invested 1 year ago would be worth $1,620.63. This corresponds to total returns of 55.17%, 47.66%, 62.06%, respectively, with annualized returns of 4.49%, 8.11%, 62.06%.

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
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
July 28, 2026	50	50.2	50.2	51.13	48.89	111,440
July 27, 2026	50.07	49.61	49.61	50.76	48.5	117,291
July 23, 2026	51.02	49.96	49.96	51.28	49.86	180,369
July 22, 2026	51.47	51.17	51.17	52.25	50.37	100,289
July 21, 2026	49.73	51.47	51.47	51.54	48.67	163,321
July 20, 2026	49.17	49.2	49.2	50.07	47.77	205,387
July 17, 2026	48.59	49.14	49.14	49.46	48.32	216,957
July 16, 2026	48.06	49.05	49.05	50	48.06	222,306
July 15, 2026	48.74	48.47	48.47	49.3	48	145,064
July 14, 2026	48.27	48.53	48.53	49	48.05	78,489
July 13, 2026	47.65	47.77	47.77	48.36	47.23	116,303
July 10, 2026	46.93	47.56	47.56	48.12	46.49	115,592
July 09, 2026	47.41	46.59	46.59	48	46.48	159,564
July 08, 2026	46.61	47.4	47.4	47.52	45.37	144,517
July 07, 2026	46.84	46.76	46.76	47.32	45.13	202,924
July 06, 2026	45.97	47.1	47.1	47.68	45.75	149,787
July 02, 2026	44.97	46.21	46.21	48.63	44.96	255,728
July 01, 2026	44.78	44.56	44.56	45.56	44.48	126,250
June 30, 2026	45.09	44.9	44.9	45.54	44.65	123,147
June 29, 2026	44.88	45.36	45.36	45.45	43.95	157,782
June 26, 2026	44.33	45.12	45.12	45.13	44.01	322,157
June 25, 2026	44.45	44.7	44.7	44.75	43.68	154,787
June 24, 2026	42.94	43.88	43.88	44.36	42.77	157,410
June 23, 2026	43.8	42.9	42.9	43.9	42.78	136,010
June 22, 2026	43.49	44.42	44.42	44.46	42.65	291,772
June 18, 2026	43.94	43.73	43.73	44.74	43.42	385,864
June 17, 2026	44.53	43.65	43.65	45.44	43.64	153,445
June 16, 2026	44.65	44.5	44.5	45.33	44.26	183,870