Koppers Inc. (KOP)
NYSE: KOP
· Real-Time Price · USD
28.82
0.07 (0.24%)
At close: Sep 24, 2025, 3:59 PM
28.82
0.00%
After-hours: Sep 24, 2025, 04:04 PM EDT
KOP Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 24, 2025 | 28.81 | 28.95 | 28.64 | 28.82 | 28.82 | 0.24% | 114,550 |
| Sep 23, 2025 | 28.87 | 29.49 | 28.73 | 28.75 | 28.75 | -0.48% | 224,800 |
| Sep 22, 2025 | 28.83 | 29.02 | 28.57 | 28.89 | 28.89 | -0.38% | 227,100 |
| Sep 19, 2025 | 29.32 | 29.36 | 28.56 | 29.00 | 29.00 | -1.19% | 591,400 |
| Sep 18, 2025 | 29.22 | 29.55 | 28.86 | 29.35 | 29.35 | 1.28% | 222,003 |
| Sep 17, 2025 | 28.73 | 29.90 | 28.53 | 28.98 | 28.98 | 1.22% | 290,300 |
| Sep 16, 2025 | 28.67 | 29.16 | 28.43 | 28.63 | 28.63 | 0.00% | 132,842 |
| Sep 15, 2025 | 28.88 | 28.96 | 28.29 | 28.63 | 28.63 | -0.42% | 140,000 |
| Sep 12, 2025 | 28.65 | 28.98 | 28.14 | 28.75 | 28.75 | -0.52% | 177,708 |
| Sep 11, 2025 | 27.49 | 28.98 | 27.49 | 28.90 | 28.90 | 4.98% | 199,120 |
| Sep 10, 2025 | 28.65 | 28.82 | 27.38 | 27.53 | 27.53 | -4.04% | 137,900 |
| Sep 9, 2025 | 28.39 | 28.94 | 28.19 | 28.69 | 28.69 | 0.07% | 198,400 |
| Sep 8, 2025 | 28.91 | 28.94 | 28.35 | 28.67 | 28.67 | -0.69% | 170,843 |
| Sep 5, 2025 | 28.59 | 29.99 | 28.50 | 28.87 | 28.87 | 0.87% | 159,600 |
| Sep 4, 2025 | 28.22 | 28.69 | 27.97 | 28.62 | 28.62 | 1.92% | 172,000 |
| Sep 3, 2025 | 28.14 | 28.98 | 27.24 | 28.08 | 28.08 | -0.85% | 173,100 |
| Sep 2, 2025 | 28.65 | 28.89 | 28.24 | 28.32 | 28.32 | -2.28% | 174,828 |
| Aug 29, 2025 | 29.04 | 29.16 | 28.65 | 28.98 | 28.98 | -0.10% | 135,700 |
| Aug 28, 2025 | 29.40 | 29.47 | 28.94 | 29.01 | 28.93 | -0.75% | 172,918 |
| Aug 27, 2025 | 29.23 | 29.74 | 28.75 | 29.23 | 29.15 | -0.54% | 130,000 |