Koppers Holdings Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Dec 31, 2025	27.39	27.48	27.00	27.08	27.08	-0.99%	95,287
Dec 30, 2025	27.20	27.60	27.01	27.35	27.35	0.22%	115,129
Dec 29, 2025	26.94	27.31	26.64	27.29	27.29	1.26%	139,156
Dec 26, 2025	27.15	27.24	26.76	26.95	26.95	-1.10%	119,255
Dec 24, 2025	26.89	27.29	26.88	27.25	27.25	1.49%	54,899
Dec 23, 2025	27.26	27.33	26.76	26.85	26.85	-1.54%	80,812
Dec 22, 2025	27.42	28.13	27.21	27.27	27.27	-0.80%	180,020
Dec 19, 2025	27.92	28.00	27.08	27.49	27.49	-2.28%	317,793
Dec 18, 2025	28.17	28.68	27.88	28.13	28.13	-0.60%	143,065
Dec 17, 2025	28.51	28.83	28.17	28.30	28.30	-1.12%	106,645
Dec 16, 2025	28.47	29.04	28.12	28.62	28.62	0.46%	220,602
Dec 15, 2025	29.06	29.47	28.42	28.49	28.49	-1.79%	120,286
Dec 12, 2025	29.25	29.80	28.92	29.01	29.01	-0.85%	151,539
Dec 11, 2025	29.04	29.34	28.72	29.26	29.26	1.67%	109,517
Dec 10, 2025	27.69	29.09	27.69	28.78	28.78	3.56%	192,756
Dec 9, 2025	28.25	28.41	27.47	27.79	27.79	-0.93%	165,243
Dec 8, 2025	28.08	28.61	27.87	28.05	28.05	0.14%	153,996
Dec 5, 2025	27.84	28.49	27.84	28.01	28.01	-0.14%	106,218
Dec 4, 2025	29.08	29.25	27.99	28.05	28.05	-3.94%	115,218
Dec 3, 2025	29.24	29.71	28.81	29.20	29.20	-0.07%	105,850
Dec 2, 2025	29.77	29.77	28.92	29.22	29.22	-1.35%	133,599
Dec 1, 2025	29.43	30.08	29.43	29.62	29.62	-0.17%	90,220
Nov 28, 2025	29.62	29.91	29.40	29.67	29.67	-0.10%	94,336
Nov 26, 2025	29.55	30.35	29.55	29.70	29.62	-0.64%	196,041
Nov 25, 2025	28.75	30.13	28.71	29.89	29.81	4.69%	195,246
Nov 24, 2025	28.26	28.64	27.70	28.55	28.47	1.21%	166,229
Nov 21, 2025	27.40	28.81	27.23	28.21	28.13	3.37%	206,074
Nov 20, 2025	28.09	28.44	27.18	27.29	27.22	-1.62%	98,566
Nov 19, 2025	27.97	28.04	27.46	27.74	27.67	-0.68%	141,305
Nov 18, 2025	27.72	28.49	27.49	27.93	27.85	0.25%	160,715
Nov 17, 2025	28.98	28.99	27.84	27.86	27.78	-3.73%	186,360
Nov 14, 2025	29.34	29.75	28.51	28.94	28.86	-1.53%	234,877
Nov 13, 2025	28.43	29.58	28.14	29.39	29.31	2.94%	196,708
Nov 12, 2025	28.44	28.95	28.18	28.55	28.47	0.88%	172,066
Nov 11, 2025	27.89	28.37	27.37	28.30	28.22	2.17%	227,558
Nov 10, 2025	27.00	27.89	26.02	27.70	27.63	3.75%	182,217
Nov 7, 2025	28.65	28.65	25.00	26.70	26.63	-4.09%	212,905
Nov 6, 2025	28.15	30.00	27.74	27.84	27.77	-0.75%	174,463
Nov 5, 2025	28.07	28.61	27.77	28.05	27.97	-0.67%	182,871
Nov 4, 2025	27.86	28.48	26.93	28.24	28.16	0.25%	135,153
Nov 3, 2025	28.01	28.39	27.52	28.17	28.09	-0.18%	174,155
Oct 31, 2025	27.58	28.39	27.10	28.22	28.14	2.21%	162,525
Oct 30, 2025	28.67	28.67	27.26	27.61	27.54	-5.61%	162,622
Oct 29, 2025	29.38	29.83	28.82	29.25	29.17	-0.41%	219,546
Oct 28, 2025	29.19	29.59	28.82	29.37	29.29	-0.14%	139,406
Oct 27, 2025	29.36	29.63	28.96	29.41	29.33	0.93%	152,016
Oct 24, 2025	29.12	29.44	29.07	29.14	29.06	1.46%	85,607
Oct 23, 2025	28.62	29.04	28.30	28.72	28.64	1.20%	104,674
Oct 22, 2025	28.00	28.44	27.94	28.38	28.30	1.39%	145,003
Oct 21, 2025	27.02	28.03	27.00	27.99	27.91	3.63%	153,347