NYSE:KOP | Historical Stock Price | Koppers Holdings Inc.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2006-02-01 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$9.63$14.60$22.12$33.53$50.81$77.002006-02-012026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$27.08$36.02116,400
2025-12-30$27.35$36.38115,600
2025-12-29$27.29$36.30139,900
2025-12-26$26.95$35.85119,300
2025-12-24$27.25$36.2554,900
2025-12-23$26.85$35.7280,800
2025-12-22$27.27$36.28182,000
2025-12-19$27.49$36.57325,900
2025-12-18$28.13$37.42143,100
2025-12-17$28.30$37.65106,600
2025-12-16$28.62$38.07220,600
2025-12-15$28.49$37.90120,300
2025-12-12$29.01$38.59151,500
2025-12-11$29.26$38.92109,500
2025-12-10$28.78$38.28192,800
2025-12-09$27.79$36.97165,200
2025-12-08$28.05$37.31154,000
2025-12-05$28.01$37.26106,200
2025-12-04$28.05$37.31115,200
2025-12-03$29.20$38.84105,900
2025-12-02$29.22$38.87133,600
2025-12-01$29.62$39.4090,200
2025-11-28$29.67$39.4794,300
2025-11-26$29.70$39.40196,000
2025-11-25$29.89$39.65195,200
2025-11-24$28.55$37.88166,000
2025-11-21$28.21$37.42206,100
2025-11-20$27.29$36.2098,600
2025-11-19$27.74$36.80141,300
2025-11-18$27.93$37.05160,700
2025-11-17$27.86$36.96186,400
2025-11-14$28.94$38.39234,900
2025-11-13$29.39$38.99196,700
2025-11-12$28.55$37.88172,100
2025-11-11$28.30$37.54227,600
2025-11-10$27.70$36.75182,200
2025-11-07$26.70$35.42212,900
2025-11-06$27.84$36.93174,500
2025-11-05$28.05$37.21182,900
2025-11-04$28.24$37.46135,200
2025-11-03$28.17$37.37174,100
2025-10-31$28.22$37.44162,500
2025-10-30$27.61$36.63162,600
2025-10-29$29.25$38.80219,500
2025-10-28$29.37$38.96139,400
2025-10-27$29.41$39.02152,000
2025-10-24$29.14$38.6685,600
2025-10-23$28.72$38.10104,700
2025-10-22$28.38$37.65145,000
2025-10-21$27.99$37.13153,300
2025-10-20$27.01$35.83119,400
2025-10-17$26.74$35.47131,100
2025-10-16$26.74$35.47116,400
2025-10-15$26.43$35.06101,900
2025-10-14$26.69$35.4194,700
2025-10-13$26.74$35.47146,700
2025-10-10$26.35$34.96181,300
2025-10-09$26.50$35.16191,000
2025-10-08$26.59$35.28114,800
2025-10-07$26.47$35.12153,100
2025-10-06$26.74$35.47175,200
2025-10-03$27.00$35.82157,800
2025-10-02$26.94$35.74137,800
2025-10-01$27.90$37.01135,300
2025-09-30$28.00$37.15123,800
2025-09-29$27.75$36.81138,800
2025-09-26$28.41$37.69121,900
2025-09-25$28.15$37.35127,700
2025-09-24$28.82$38.23114,600
2025-09-23$28.75$38.14224,800
2025-09-22$28.89$38.33227,100
2025-09-19$29.00$38.47591,400
2025-09-18$29.35$38.94222,000
2025-09-17$28.98$38.45290,300
2025-09-16$28.63$37.98132,800
2025-09-15$28.63$37.98140,000
2025-09-12$28.75$38.14177,700
2025-09-11$28.90$38.34199,100
2025-09-10$27.53$36.52137,900
2025-09-09$28.69$38.06198,400
2025-09-08$28.67$38.04170,800
2025-09-05$28.87$38.30159,600
2025-09-04$28.62$37.97172,000
2025-09-03$28.08$37.25173,100
2025-09-02$28.32$37.57174,800
2025-08-29$28.98$38.45135,700
2025-08-28$29.01$38.38172,900
2025-08-27$29.23$38.67130,000
2025-08-26$29.39$38.88138,900
2025-08-25$29.70$39.29127,400
2025-08-22$30.16$39.90148,800
2025-08-21$28.79$38.09266,700
2025-08-20$29.33$38.80138,400
2025-08-19$29.85$39.49143,100
2025-08-18$29.62$39.19160,400
2025-08-15$29.61$39.17223,000
2025-08-14$30.64$40.54168,400
2025-08-13$31.06$41.09169,100
2025-08-12$29.65$39.23265,600
2025-08-11$28.35$37.51308,100
2025-08-08$28.84$38.16405,300
2025-08-07$33.27$44.0296,600
2025-08-06$32.44$42.9279,000
2025-08-05$32.62$43.16102,900
2025-08-04$31.85$42.1487,500
2025-08-01$31.89$42.19116,700
2025-07-31$32.86$43.47121,500
2025-07-30$33.10$43.79114,000
2025-07-29$33.82$44.7499,800
2025-07-28$34.05$45.0594,700
2025-07-25$34.59$45.76100,800
2025-07-24$33.49$44.31116,100
2025-07-23$34.29$45.37110,300
2025-07-22$33.00$43.66180,800
2025-07-21$32.22$42.6394,200
2025-07-18$32.34$42.79120,400
2025-07-17$32.26$42.68105,600
2025-07-16$32.44$42.92164,900
2025-07-15$32.78$43.37124,600
2025-07-14$33.73$44.62112,200
2025-07-11$34.03$45.0287,900
2025-07-10$34.59$45.76130,000
2025-07-09$34.75$45.97190,000
2025-07-08$33.68$44.56178,700
2025-07-07$32.99$43.65141,500
2025-07-03$33.69$44.5781,800
2025-07-02$34.10$45.11157,400
2025-07-01$33.23$43.96156,300
2025-06-30$32.15$42.53112,600
2025-06-27$32.75$43.33319,200
2025-06-26$31.79$42.06117,000
2025-06-25$31.67$41.90107,100
2025-06-24$32.30$42.73100,200
2025-06-23$31.79$42.0677,800
2025-06-20$31.30$41.41205,400
2025-06-18$31.15$41.2174,600
2025-06-17$31.62$41.8382,800
2025-06-16$31.85$42.14123,500
2025-06-13$31.91$42.2271,300
2025-06-12$32.73$43.3079,800
2025-06-11$33.32$44.08101,600
2025-06-10$33.26$44.00114,100
2025-06-09$32.88$43.50122,400
2025-06-06$32.19$42.5977,200
2025-06-05$31.58$41.78123,300
2025-06-04$31.45$41.61103,400
2025-06-03$31.25$41.3491,100
2025-06-02$30.57$40.44251,500
2025-05-30$30.72$40.64198,700
2025-05-29$31.55$41.63140,900
2025-05-28$31.61$41.71133,600
2025-05-27$31.84$42.02126,700
2025-05-23$30.26$39.93177,800
2025-05-22$30.37$40.08121,400
2025-05-21$30.44$40.17138,300
2025-05-20$31.45$41.50129,600
2025-05-19$31.39$41.42134,300
2025-05-16$31.20$41.17150,100
2025-05-15$31.42$41.46196,300
2025-05-14$30.45$40.18281,300
2025-05-13$30.40$40.12231,200
2025-05-12$29.45$38.86292,900
2025-05-09$27.06$35.71202,100
2025-05-08$26.16$34.52161,100
2025-05-07$25.04$33.04123,400
2025-05-06$25.18$33.23105,100
2025-05-05$25.45$33.58115,700
2025-05-02$25.99$34.30141,000
2025-05-01$25.15$33.19126,400
2025-04-30$25.06$33.07159,900
2025-04-29$25.39$33.51129,300
2025-04-28$25.22$33.28130,400
2025-04-25$25.29$33.37168,600
2025-04-24$25.58$33.76156,200
2025-04-23$24.74$32.65247,300
2025-04-22$24.65$32.53352,200
2025-04-21$24.48$32.30145,900
2025-04-17$24.88$32.83146,200
2025-04-16$24.09$31.79115,600
2025-04-15$24.46$32.28101,700
2025-04-14$25.02$33.02130,000
2025-04-11$24.91$32.87112,700
2025-04-10$24.38$32.17208,900
2025-04-09$25.61$33.80158,500
2025-04-08$23.50$31.01207,000
2025-04-07$24.29$32.05244,500
2025-04-04$25.00$32.99275,000
2025-04-03$26.00$34.31164,400
2025-04-02$27.89$36.80100,000
2025-04-01$27.69$36.54114,300
2025-03-31$28.00$36.95125,600
2025-03-28$27.89$36.80167,900
2025-03-27$29.14$38.45136,000
2025-03-26$28.69$37.86139,800
2025-03-25$28.36$37.42228,400
2025-03-24$28.71$37.89247,800
2025-03-21$28.15$37.15545,200
2025-03-20$29.77$39.29275,400
2025-03-19$29.22$38.56277,300
2025-03-18$30.68$40.49213,300
2025-03-17$30.03$39.63205,200
2025-03-14$30.01$39.60183,200
2025-03-13$28.38$37.45146,000
2025-03-12$29.58$39.03249,700
2025-03-11$30.01$39.60216,000
2025-03-10$29.87$39.42182,100
2025-03-07$29.87$39.42251,900
2025-03-06$29.75$39.15175,600
2025-03-05$28.56$37.59190,300
2025-03-04$27.90$36.72223,000
2025-03-03$27.81$36.60312,300
2025-02-28$29.11$38.31245,300
2025-02-27$29.25$38.50575,500
2025-02-26$32.27$42.47209,200
2025-02-25$31.92$42.01153,400
2025-02-24$30.68$40.38172,000
2025-02-21$30.19$39.73108,300
2025-02-20$30.58$40.2589,300
2025-02-19$30.80$40.54146,600
2025-02-18$30.28$39.8592,300
2025-02-14$30.14$39.6777,000
2025-02-13$30.14$39.6764,900
2025-02-12$29.96$39.4392,800
2025-02-11$30.66$40.3575,100
2025-02-10$30.12$39.6492,000
2025-02-07$29.21$38.4488,300
2025-02-06$29.72$39.1190,200
2025-02-05$29.22$38.4665,200
2025-02-04$29.51$38.8499,200
2025-02-03$28.66$37.7292,900
2025-01-31$29.76$39.17108,900
2025-01-30$30.62$40.3074,900
2025-01-29$30.49$40.1359,800
2025-01-28$30.63$40.3186,600
2025-01-27$31.47$41.42111,700
2025-01-24$31.34$41.2594,500
2025-01-23$31.70$41.72126,000
2025-01-22$31.69$41.7187,300
2025-01-21$32.34$42.5698,600
2025-01-17$31.78$41.83105,900
2025-01-16$31.82$41.8890,000
2025-01-15$31.60$41.5993,000
2025-01-14$30.70$40.4085,400
2025-01-13$30.21$39.76170,400
2025-01-10$29.62$38.98130,200
2025-01-08$30.32$39.90134,700
2025-01-07$30.83$40.58249,800
2025-01-06$31.93$42.02123,600
2025-01-03$31.72$41.75120,900
2025-01-02$31.81$41.86124,500