Koppers Holdings Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Feb 12, 2026	34.53	34.91	33.52	34.22	34.22	0.03%	243,463
Feb 11, 2026	33.35	34.21	32.92	34.21	34.21	3.04%	154,661
Feb 10, 2026	32.63	33.62	32.63	33.20	33.20	2.15%	153,885
Feb 9, 2026	32.25	32.77	31.66	32.50	32.50	0.62%	112,335
Feb 6, 2026	31.83	32.51	31.57	32.30	32.30	2.54%	167,453
Feb 5, 2026	31.24	31.67	30.83	31.50	31.50	0.90%	174,728
Feb 4, 2026	30.57	31.88	30.46	31.22	31.22	3.00%	186,217
Feb 3, 2026	29.58	30.74	29.33	30.31	30.31	2.09%	145,660
Feb 2, 2026	29.47	30.00	29.15	29.69	29.69	0.78%	155,591
Jan 30, 2026	29.22	29.84	28.99	29.46	29.46	-0.54%	155,986
Jan 29, 2026	29.44	29.68	29.00	29.62	29.62	1.30%	147,501
Jan 28, 2026	29.12	29.28	28.79	29.24	29.24	0.41%	91,703
Jan 27, 2026	29.06	29.17	28.77	29.12	29.12	-0.03%	75,885
Jan 26, 2026	29.03	29.22	28.65	29.13	29.13	0.55%	86,455
Jan 23, 2026	29.34	29.46	28.88	28.97	28.97	-1.63%	97,064
Jan 22, 2026	29.85	30.22	29.37	29.45	29.45	-0.24%	123,812
Jan 21, 2026	28.22	29.60	28.22	29.52	29.52	4.83%	126,543
Jan 20, 2026	28.50	28.56	27.96	28.16	28.16	-3.16%	112,358
Jan 16, 2026	28.92	29.25	28.75	29.08	29.08	-0.55%	117,334
Jan 15, 2026	29.39	29.66	29.02	29.24	29.24	-0.41%	100,453
Jan 14, 2026	28.90	29.72	28.67	29.36	29.36	2.16%	133,286
Jan 13, 2026	28.92	29.91	28.71	28.74	28.74	-0.66%	116,976
Jan 12, 2026	28.25	29.01	27.49	28.93	28.93	2.12%	115,563
Jan 9, 2026	27.04	28.47	26.81	28.33	28.33	2.57%	220,024
Jan 8, 2026	26.80	27.83	26.77	27.62	27.62	2.56%	85,738
Jan 7, 2026	27.65	27.77	26.79	26.93	26.93	-2.53%	123,935
Jan 6, 2026	26.75	27.72	26.55	27.63	27.63	2.60%	247,845
Jan 5, 2026	26.52	27.49	26.52	26.93	26.93	0.97%	102,511
Jan 2, 2026	27.04	27.29	26.65	26.67	26.67	-1.51%	122,918
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