Koppers Holdings Inc. (KOP)
Showing Closing Date Range from Oct 23, 2025 to Oct 23, 2026 compared to Oct 22, 2024 to Oct 22, 2025.
Compare Last 12 Months with Previous Period
Current Period Close
$40.18
Oct 23, 2025 - Oct 23, 2026
Previous Period Close
$28.38
Oct 22, 2024 - Oct 22, 2025
Net Comparison Delta
+$11.80 (+41.58%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(252 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 23, 2026 | $40.18 | - | - | - |
| Oct 22, 2026 | $40.75 | Oct 22, 2025 | $28.38 | +43.59% |
| Oct 21, 2026 | $41.34 | Oct 21, 2025 | $27.99 | +47.70% |
| Oct 20, 2026 | $41.70 | Oct 20, 2025 | $27.01 | +54.39% |
| Oct 19, 2026 | $42.91 | Oct 17, 2025 | $26.74 | +60.47% |
| Oct 16, 2026 | $43.32 | Oct 16, 2025 | $26.74 | +62.00% |
| Oct 15, 2026 | $43.44 | Oct 15, 2025 | $26.43 | +64.36% |
| Oct 14, 2026 | $43.67 | Oct 14, 2025 | $26.69 | +63.62% |
| Oct 13, 2026 | $44.41 | Oct 13, 2025 | $26.74 | +66.08% |
| Oct 12, 2026 | $43.10 | Oct 10, 2025 | $26.35 | +63.57% |
| Oct 09, 2026 | $43.41 | Oct 09, 2025 | $26.50 | +63.81% |
| Oct 08, 2026 | $44.24 | Oct 08, 2025 | $26.59 | +66.38% |
| Oct 07, 2026 | $43.88 | Oct 07, 2025 | $26.47 | +65.77% |
| Oct 06, 2026 | $46.03 | Oct 06, 2025 | $26.74 | +72.14% |
| Oct 05, 2026 | $47.04 | Oct 03, 2025 | $27.00 | +74.22% |
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