Koppers Holdings Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Aug 14, 2025	30.44	31.01	30.43	30.68	-	-1.22%	57,885
Aug 13, 2025	30.00	31.18	30.00	31.06	31.06	4.76%	169,137
Aug 12, 2025	28.93	30.40	28.50	29.65	29.65	4.59%	265,579
Aug 11, 2025	28.74	29.04	26.82	28.35	28.35	-1.70%	308,064
Aug 8, 2025	28.76	29.57	26.79	28.84	28.84	-13.32%	405,339
Aug 7, 2025	32.95	33.46	32.72	33.27	33.27	2.56%	96,893
Aug 6, 2025	32.49	32.60	32.24	32.44	32.44	-0.55%	79,040
Aug 5, 2025	31.91	32.75	31.91	32.62	32.62	2.42%	102,931
Aug 4, 2025	31.99	32.36	31.73	31.85	31.85	-0.13%	87,478
Aug 1, 2025	32.49	32.49	31.41	31.89	31.89	-2.95%	116,697
Jul 31, 2025	32.67	33.12	32.51	32.86	32.86	-0.73%	121,450
Jul 30, 2025	33.76	33.76	32.83	33.10	33.10	-2.13%	113,950
Jul 29, 2025	34.18	34.18	33.69	33.82	33.82	-0.68%	99,793
Jul 28, 2025	34.50	34.70	33.84	34.05	34.05	-1.56%	94,690
Jul 25, 2025	33.43	34.65	33.40	34.59	34.59	3.28%	100,772
Jul 24, 2025	33.84	34.08	33.29	33.49	33.49	-2.33%	116,093
Jul 23, 2025	33.60	34.31	33.32	34.29	34.29	3.91%	110,269
Jul 22, 2025	32.41	33.19	32.33	33.00	33.00	2.42%	180,766
Jul 21, 2025	32.63	32.96	32.14	32.22	32.22	-0.37%	94,166
Jul 18, 2025	32.62	32.62	31.92	32.34	32.34	0.25%	120,439
Jul 17, 2025	32.26	32.52	32.17	32.26	32.26	-0.55%	105,557
Jul 16, 2025	32.93	32.93	32.14	32.44	32.44	-1.04%	164,871
Jul 15, 2025	33.69	33.80	32.71	32.78	32.78	-2.82%	124,630
Jul 14, 2025	33.80	33.94	33.07	33.73	33.73	-0.88%	112,223
Jul 11, 2025	34.05	34.76	33.76	34.03	34.03	-1.62%	87,925
Jul 10, 2025	34.75	35.61	34.53	34.59	34.59	-0.46%	129,968
Jul 9, 2025	34.03	34.75	33.34	34.75	34.75	3.18%	190,036
Jul 8, 2025	33.26	34.38	33.00	33.68	33.68	2.09%	178,694
Jul 7, 2025	33.36	33.84	32.93	32.99	32.99	-2.08%	141,474
Jul 3, 2025	34.12	34.12	33.41	33.69	33.69	-1.20%	81,766
Jul 2, 2025	33.44	34.20	33.04	34.10	34.10	2.62%	157,412
Jul 1, 2025	31.97	33.76	31.95	33.23	33.23	3.36%	156,272
Jun 30, 2025	32.68	32.99	31.55	32.15	32.15	-1.83%	112,586
Jun 27, 2025	31.91	32.84	31.90	32.75	32.75	3.02%	319,181
Jun 26, 2025	31.78	32.03	31.54	31.79	31.79	0.38%	117,023
Jun 25, 2025	32.29	32.46	31.61	31.67	31.67	-1.95%	107,123
Jun 24, 2025	32.01	32.53	31.98	32.30	32.30	1.60%	100,186
Jun 23, 2025	31.24	31.81	30.90	31.79	31.79	1.57%	77,803
Jun 20, 2025	31.30	31.39	30.79	31.30	31.30	0.48%	205,373
Jun 18, 2025	31.52	31.87	31.09	31.15	31.15	-1.49%	74,567
Jun 17, 2025	31.40	32.09	31.31	31.62	31.62	-0.72%	82,816
Jun 16, 2025	32.27	32.40	31.57	31.85	31.85	-0.19%	123,451
Jun 13, 2025	32.13	32.48	31.80	31.91	31.91	-2.51%	71,273
Jun 12, 2025	32.92	33.02	32.43	32.73	32.73	-1.77%	79,826
Jun 11, 2025	33.58	33.58	33.09	33.32	33.32	0.18%	101,562
Jun 10, 2025	33.15	33.51	32.56	33.26	33.26	1.16%	114,085
Jun 9, 2025	32.65	33.31	32.21	32.88	32.88	2.14%	122,374
Jun 6, 2025	32.14	32.33	31.97	32.19	32.19	1.93%	77,151
Jun 5, 2025	31.54	32.00	31.14	31.58	31.58	0.41%	123,278
Jun 4, 2025	31.24	31.79	31.24	31.45	31.45	0.64%	103,464