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Koppers Holdings Inc. (KOP)
NYSE: KOP · Real-Time Price · USD
28.22
+0.61 (2.21%)
At close: Oct 31, 2025, 4:00 PM EDT
28.22
0.00 (0.00%)
After-hours: Oct 31, 2025, 4:10 PM EDT

Koppers Holdings Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 31, 202527.5827.9727.1027.81-0.72%31,671
Oct 30, 202528.6728.6727.2627.6127.61-5.61%162,622
Oct 29, 202529.3829.8328.8229.2529.25-0.41%219,546
Oct 28, 202529.1929.5928.8229.3729.37-0.14%139,406
Oct 27, 202529.3629.6328.9629.4129.410.93%152,016
Oct 24, 202529.1229.4429.0729.1429.141.46%85,607
Oct 23, 202528.6229.0428.3028.7228.721.20%104,674
Oct 22, 202528.0028.4427.9428.3828.381.39%145,003
Oct 21, 202527.0228.0327.0027.9927.993.63%153,347
Oct 20, 202526.9227.1526.5727.0127.011.01%119,397
Oct 17, 202526.5126.9026.4526.7426.74-131,171
Oct 16, 202526.4926.7426.1726.7426.741.17%116,367
Oct 15, 202526.9027.3926.2626.4326.43-0.97%101,852
Oct 14, 202526.3826.9926.3826.6926.69-0.19%94,669
Oct 13, 202526.7426.9426.5526.7426.741.48%146,680
Oct 10, 202526.5426.8426.1626.3526.35-0.57%181,320
Oct 9, 202526.6026.7926.3426.5026.50-0.34%190,956
Oct 8, 202526.6426.6526.3026.5926.590.45%114,814
Oct 7, 202526.7527.1326.3726.4726.47-1.01%153,085
Oct 6, 202527.1427.1426.2226.7426.74-0.96%175,209
Oct 3, 202527.1427.4926.9127.0027.000.22%157,808
Oct 2, 202527.7928.0726.9126.9426.94-3.44%137,842
Oct 1, 202527.7427.9827.4627.9027.90-0.36%135,399
Sep 30, 202527.5728.2227.3928.0028.000.90%123,755
Sep 29, 202528.6028.6327.7527.7527.75-2.32%138,789
Sep 26, 202528.1528.6828.1528.4128.410.92%121,925
Sep 25, 202528.7528.7528.1028.1528.15-2.32%127,678
Sep 24, 202528.8128.9528.6428.8228.820.24%114,550
Sep 23, 202528.8729.4928.7328.7528.75-0.48%224,766
Sep 22, 202528.8329.0228.5728.8928.89-0.38%227,062
Sep 19, 202529.3229.3628.5629.0029.00-1.19%591,356
Sep 18, 202529.2229.5528.8629.3529.351.28%222,003
Sep 17, 202528.7329.9028.5328.9828.981.22%290,260
Sep 16, 202528.6729.1628.4328.6328.63-132,842
Sep 15, 202528.8828.9628.2928.6328.63-0.42%139,985
Sep 12, 202528.6528.9828.1428.7528.75-0.52%177,708
Sep 11, 202527.4928.9827.4928.9028.904.98%199,120
Sep 10, 202528.6528.8227.3827.5327.53-4.04%137,870
Sep 9, 202528.3928.9428.1928.6928.690.07%198,366
Sep 8, 202528.9128.9428.3528.6728.67-0.69%170,843
Sep 5, 202528.5929.9928.5028.8728.870.87%159,568
Sep 4, 202528.2228.6927.9728.6228.621.92%171,977
Sep 3, 202528.1428.9827.2428.0828.08-0.85%173,089
Sep 2, 202528.6528.8928.2428.3228.32-2.28%174,828
Aug 29, 202529.0429.1628.6528.9828.98-0.10%135,657
Aug 28, 202529.4029.4728.9429.0128.93-0.75%172,918
Aug 27, 202529.2329.7428.7529.2329.15-0.54%129,990
Aug 26, 202529.6529.7929.2329.3929.31-1.04%138,870
Aug 25, 202530.2230.2229.2329.7029.62-1.53%127,390
Aug 22, 202529.2730.4728.9430.1630.084.76%148,847