Koppers Holdings Inc. (KOP)
Showing Closing Date Range from Jul 30 to Oct 28, 2026 compared to Apr 30 to Jul 29, 2026.
Compare Last 3 Months with Previous Period
Current Period Close
$42.08
Jul 30, 2026 - Oct 28, 2026
Previous Period Close
$49.21
Apr 30, 2026 - Jul 29, 2026
Net Comparison Delta
$-7.13 (-14.49%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(64 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 28, 2026 | $42.08 | - | - | - |
| Oct 27, 2026 | $41.44 | - | - | - |
| Oct 26, 2026 | $39.83 | Jul 29, 2026 | $49.21 | -19.06% |
| Oct 23, 2026 | $40.18 | Jul 28, 2026 | $50.20 | -19.96% |
| Oct 22, 2026 | $40.75 | Jul 27, 2026 | $49.61 | -17.86% |
| Oct 21, 2026 | $41.34 | Jul 24, 2026 | $50.22 | -17.68% |
| Oct 20, 2026 | $41.70 | Jul 23, 2026 | $49.96 | -16.53% |
| Oct 19, 2026 | $42.91 | Jul 22, 2026 | $51.17 | -16.14% |
| Oct 16, 2026 | $43.32 | Jul 21, 2026 | $51.47 | -15.83% |
| Oct 15, 2026 | $43.44 | Jul 20, 2026 | $49.20 | -11.71% |
| Oct 14, 2026 | $43.67 | Jul 17, 2026 | $49.14 | -11.13% |
| Oct 13, 2026 | $44.41 | Jul 16, 2026 | $49.05 | -9.46% |
| Oct 12, 2026 | $43.10 | Jul 15, 2026 | $48.47 | -11.08% |
| Oct 09, 2026 | $43.41 | Jul 14, 2026 | $48.53 | -10.55% |
| Oct 08, 2026 | $44.24 | Jul 13, 2026 | $47.77 | -7.39% |
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