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Koppers (KOP) Stock Chart & Stock Price History

Koppers logo
$40.51 -0.17 (-0.42%)
Closing price 03:59 PM Eastern
Extended Trading
$40.48 -0.03 (-0.07%)
As of 04:10 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Koppers Stock Price Performance

The Koppers (KOP) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 29.48%, with a year-to-date return of 49.31%. In the past month, the stock has increased 7.09%, reflecting recent market activity.

As of the latest close, Koppers traded at $40.63 with a market cap of $781.39 million and volume of 233,653 shares. Five years ago, the stock traded at $34.42, representing a 17.69% increase over that period. At the time, it had a market cap of $731.12 million and a volume of 89,691 shares.

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5 Day
Performance
-5.43%
1 Month
Performance
+7.09%
3 Month
Performance
+15.37%
Year-To-Date
Performance
+49.31%
1 Year
Performance
+29.48%
5 Year
Performance
+17.69%

KOP Stock Chart for Monday, May, 18, 2026

Koppers Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/15/2026$42.42$40.63
-4.22%
$42.23$40.33233,653 shs$781.39 million
05/14/2026$42.84$42.42
-0.96%
$43.88$41.94367,473 shs$815.90 million
05/13/2026$43.58$42.84
-1.71%
$44.67$42.30294,097 shs$823.74 million
05/12/2026$42.99$43.58
+1.38%
$44.10$42.42328,907 shs$842.84 million
05/11/2026$43.93$42.99
-2.15%
$44.00$41.91253,108 shs$831.20 million
05/08/2026$41.23$43.93
+6.55%
$46.40$42.45334,016 shs$795.92 million
05/07/2026$41.65$41.23
-1.01%
$42.41$41.09176,869 shs$797.39 million
05/06/2026$41.35$41.65
+0.72%
$42.04$40.18102,791 shs$805.53 million
05/05/2026N/A$41.35$41.89$39.50121,042 shs$799.66 million
04/30/2026$39.86$40.82
+2.42%
$41.06$39.73109,594 shs$789.30 million
04/29/2026$41.51$39.86
-3.99%
$41.61$39.75166,537 shs$770.68 million
04/28/2026$41.37$41.51
+0.35%
$42.17$40.91193,660 shs$802.80 million
04/27/2026$40.24$41.37
+2.81%
$41.42$40.31153,497 shs$800.00 million
04/24/2026$38.64$40.24
+4.14%
$40.49$38.85168,991 shs$778.16 million
04/23/2026$37.95$38.64
+1.80%
$38.80$37.66129,034 shs$747.12 million
04/22/2026$37.54$37.95
+1.10%
$38.06$37.4283,166 shs$734.01 million
04/21/2026$37.51$37.54
+0.08%
$38.19$36.74150,293 shs$726.04 million
04/20/2026$37.83$37.51
-0.84%
$37.96$37.3571,676 shs$725.44 million
04/17/2026$36.92$37.83
+2.47%
$38.13$36.56161,847 shs$731.46 million

This page (NYSE:KOP) was last updated on 5/18/2026 by MarketBeat.com Staff.
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