Koppers Holdings Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Nov 12, 2026	31.20	32.39	31.20	32.25	32.25	3.17%	51,555
Nov 11, 2026	30.00	31.55	29.63	31.26	31.26	5.57%	274,375
Nov 10, 2026	28.79	30.27	27.74	29.61	29.61	0.95%	394,981
Nov 9, 2026	29.33	31.03	28.44	29.33	29.33	-2.14%	453,817
Nov 6, 2026	29.47	33.51	26.86	29.97	29.97	-24.39%	354,557
Nov 5, 2026	43.35	43.36	38.98	39.64	39.64	-7.58%	164,688
Nov 4, 2026	42.69	43.03	42.11	42.89	42.89	2.61%	117,669
Nov 3, 2026	42.16	42.16	40.85	41.80	41.80	-0.07%	141,872
Nov 2, 2026	42.03	42.53	41.63	41.83	41.83	0.80%	127,288
Oct 30, 2026	41.71	42.00	40.92	41.50	41.50	-0.86%	107,566
Oct 29, 2026	42.51	42.84	41.67	41.86	41.86	-0.52%	101,661
Oct 28, 2026	41.56	42.29	41.30	42.08	42.08	1.54%	141,368
Oct 27, 2026	40.13	41.80	39.87	41.44	41.44	4.04%	173,170
Oct 26, 2026	40.27	41.13	39.73	39.83	39.83	-0.87%	117,392
Oct 23, 2026	40.37	40.75	39.31	40.18	40.18	-1.40%	216,942
Oct 22, 2026	40.98	41.51	40.48	40.75	40.75	-1.43%	173,321
Oct 21, 2026	41.96	41.96	40.93	41.34	41.34	-0.86%	333,660
Oct 20, 2026	43.08	43.56	41.62	41.70	41.70	-2.82%	101,563
Oct 19, 2026	43.43	43.78	42.82	42.91	42.91	-0.95%	100,289
Oct 16, 2026	43.31	44.20	43.06	43.32	43.32	-0.28%	107,918
Oct 15, 2026	43.92	44.39	43.14	43.44	43.44	-0.53%	110,585
Oct 14, 2026	43.92	44.23	43.12	43.67	43.67	-1.67%	116,612
Oct 13, 2026	43.09	44.43	42.69	44.41	44.41	3.04%	144,417
Oct 12, 2026	42.92	43.60	42.92	43.10	43.10	-0.71%	115,126
Oct 9, 2026	44.22	44.22	42.88	43.41	43.41	-1.88%	134,136
Oct 8, 2026	43.71	45.06	43.71	44.24	44.24	0.82%	164,781
Oct 7, 2026	45.21	45.54	43.75	43.88	43.88	-4.67%	140,089
Oct 6, 2026	47.35	47.45	45.97	46.03	46.03	-2.15%	140,491
Oct 5, 2026	45.88	47.79	45.51	47.04	47.04	2.17%	217,471
Oct 2, 2026	45.81	46.39	45.31	46.04	46.04	1.88%	158,974
Oct 1, 2026	45.20	45.46	44.33	45.19	45.19	-0.88%	196,201
Sep 30, 2026	46.34	46.34	45.46	45.59	45.59	-1.06%	149,788
Sep 29, 2026	46.26	46.44	45.52	46.08	46.08	-0.19%	103,874
Sep 28, 2026	46.06	46.98	45.95	46.17	46.17	-0.22%	102,582
Sep 25, 2026	46.00	46.51	45.51	46.27	46.27	0.67%	98,772
Sep 24, 2026	46.34	46.45	45.55	45.96	45.96	-0.65%	106,977
Sep 23, 2026	45.98	46.43	45.09	46.26	46.26	0.35%	125,131
Sep 22, 2026	45.90	46.90	45.82	46.10	46.10	1.07%	170,700
Sep 21, 2026	45.72	46.31	45.19	45.61	45.61	0.62%	138,996
Sep 18, 2026	45.98	45.98	44.83	45.33	45.33	-1.84%	458,207
Sep 17, 2026	47.42	47.42	45.83	46.18	46.18	-1.16%	170,167
Sep 16, 2026	45.99	47.64	45.69	46.72	46.72	2.03%	312,860
Sep 15, 2026	46.12	46.40	45.43	45.79	45.79	-0.46%	150,372
Sep 14, 2026	45.92	46.20	45.27	46.00	46.00	-0.76%	110,260
Sep 11, 2026	46.62	47.00	46.19	46.35	46.35	-	109,958
Sep 10, 2026	45.96	46.94	45.71	46.35	46.35	0.63%	136,476
Sep 9, 2026	47.20	47.29	45.74	46.06	46.06	-2.25%	138,065
Sep 8, 2026	47.94	47.94	46.73	47.12	47.12	-1.38%	174,060
Sep 4, 2026	46.57	47.83	46.22	47.78	47.78	1.96%	169,947
Sep 3, 2026	47.25	47.43	46.16	46.86	46.86	0.30%	169,431