Koppers Inc. (KOP)
NYSE: KOP
· Real-Time Price · USD
28.59
0.51 (1.82%)
At close: Sep 04, 2025, 3:59 PM
28.62
0.10%
After-hours: Sep 04, 2025, 06:19 PM EDT
KOP Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 3, 2025 | 28.14 | 28.98 | 27.24 | 28.08 | 28.08 | -0.85% | 168,378 |
| 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 |
| Aug 26, 2025 | 29.65 | 29.79 | 29.23 | 29.39 | 29.31 | -1.04% | 138,900 |
| Aug 25, 2025 | 30.22 | 30.22 | 29.23 | 29.70 | 29.62 | -1.53% | 127,400 |
| Aug 22, 2025 | 29.27 | 30.47 | 28.94 | 30.16 | 30.08 | 4.76% | 148,847 |
| Aug 21, 2025 | 28.85 | 29.30 | 28.64 | 28.79 | 28.71 | -1.84% | 266,700 |
| Aug 20, 2025 | 29.78 | 29.90 | 29.25 | 29.33 | 29.25 | -1.74% | 138,447 |
| Aug 19, 2025 | 29.78 | 30.30 | 29.53 | 29.85 | 29.77 | 0.78% | 143,100 |
| Aug 18, 2025 | 29.54 | 29.90 | 29.46 | 29.62 | 29.54 | 0.03% | 160,400 |
| Aug 15, 2025 | 30.81 | 30.89 | 29.52 | 29.61 | 29.53 | -3.36% | 223,009 |
| Aug 14, 2025 | 30.44 | 31.01 | 30.43 | 30.64 | 30.56 | -1.35% | 168,414 |
| Aug 13, 2025 | 30.00 | 31.18 | 30.00 | 31.06 | 30.97 | 4.76% | 169,137 |
| Aug 12, 2025 | 28.93 | 30.40 | 28.50 | 29.65 | 29.57 | 4.59% | 265,600 |
| Aug 11, 2025 | 28.74 | 29.04 | 26.82 | 28.35 | 28.27 | -1.70% | 308,100 |
| Aug 8, 2025 | 28.76 | 29.57 | 26.79 | 28.84 | 28.76 | -13.32% | 405,339 |
| Aug 7, 2025 | 32.95 | 33.46 | 32.72 | 33.27 | 33.18 | 2.56% | 96,893 |
| Aug 6, 2025 | 32.49 | 32.60 | 32.24 | 32.44 | 32.35 | -0.55% | 79,040 |