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The price of Koppers Holdings Inc. (KOP) on October 9, 2026 is 43.41 USD, -1.88% on the day. Over 52 weeks the stock traded between 25.00 USD and 53.00 USD; the price now sits 66% of the way up that range. Over the past year the price changed by +63.26%. The P/E ratio is 10.8, which is below the sector median (21.0). Market capitalization is 834.77 million USD, rank 3 among 3 stocks of the same industry with a known capitalization.
Closing prices for 9 October 2026
Next earnings report: none scheduled in the next five weeks · Earnings calendar
Change over the period shown (line colour): +62.34 %
Koppers Holdings Inc. trades on NYSE under the ticker KOP. The company belongs to the Materials sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks KOP has traded between 25.00 $ and 53.00 $. As of 9 October 2026 the price stood 65.75 % of the way from the 52-week low to the high.
Over one year KOP shares rose 63.26 %; over six months they rose 15.95 %. Volatility over 90 days is 32.49 %. Dividends are not included: this is price change only, as of 9 October 2026.
KOP trades at a price-to-earnings ratio of 10.8, below the sector median of 21.0. Price to sales is 0.4, below the sector median of 1.6. Price to book is 1.5, below the sector median of 2.1. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 9 October 2026 | 44.22 | 44.22 | 42.88 | 43.41 | 134,100 |
| 8 October 2026 | 43.71 | 45.06 | 43.71 | 44.24 | 164,800 |
| 7 October 2026 | 45.21 | 45.54 | 43.75 | 43.88 | 140,100 |
| 6 October 2026 | 47.35 | 47.45 |
The series is stated in the current share scale after splits; dividends are not included in the price
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
Address:436 SEVENTH AVENUE, PITTSBURGH, PA, 15219, US
Koppers Holdings Inc. reported revenue of 1.9B $ and net income of 77M $ over the last four quarters. Net margin is 4.10 %. Revenue changed by −8.43 % year over year. Earnings per share are 3.77 $. Market capitalisation is 835M $.
KOP has a return on equity of 14.01 %, above the sector median of 0.42 %. Return on assets is 4.10 %, above the sector median of −0.04 %. Operating margin is 8.67 %, above the sector median of 6.90 %.
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| 45.97 |
| 46.03 |
| 141,400 |
| 5 October 2026 | 45.88 | 47.79 | 45.51 | 47.04 | 282,100 |
| 2 October 2026 | 45.81 | 46.39 | 45.31 | 46.04 | 159,000 |
| 1 October 2026 | 45.20 | 45.46 | 44.33 | 45.19 | 196,700 |
| 30 September 2026 | 46.34 | 46.34 | 45.46 | 45.59 | 150,700 |
| 29 September 2026 | 46.26 | 46.44 | 45.52 | 46.08 | 104,000 |
| 28 September 2026 | 46.06 | 46.98 | 45.95 | 46.17 | 102,600 |
| 25 September 2026 | 46.00 | 46.51 | 45.51 | 46.27 | 98,800 |
| 24 September 2026 | 46.34 | 46.45 | 45.55 | 45.96 | 108,100 |
| 23 September 2026 | 45.98 | 46.43 | 45.09 | 46.26 | 126,600 |
| 22 September 2026 | 45.90 | 46.90 | 45.82 | 46.10 | 171,700 |
| 21 September 2026 | 45.72 | 46.31 | 45.19 | 45.61 | 142,300 |
| 18 September 2026 | 45.98 | 45.98 | 44.83 | 45.33 | 470,800 |
| 17 September 2026 | 47.42 | 47.42 | 45.83 | 46.18 | 179,600 |
| 16 September 2026 | 45.99 | 47.64 | 45.69 | 46.72 | 314,700 |
| 15 September 2026 | 46.12 | 46.40 | 45.43 | 45.79 | 155,100 |
| 14 September 2026 | 45.92 | 46.20 | 45.27 | 46.00 | 110,700 |