NASDAQ:IOSP | Historical Stock Price | INNOSPEC 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
1998-05-13 to 2026-09-04
Data captured

Stock Price Chart

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

$3.25$7.20$15.96$35.36$78.36$173.651998-05-132026-08-27

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

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Historical Stock Price — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$5.89$6.0872,300
2008-12-30$5.44$5.6156,200
2008-12-29$4.98$5.1457,600
2008-12-26$5.33$5.5017,900
2008-12-24$5.31$5.4822,900
2008-12-23$5.22$5.3974,500
2008-12-22$5.12$5.2874,600
2008-12-19$5.46$5.63185,200
2008-12-18$5.38$5.55132,100
2008-12-17$6.16$6.36118,300
2008-12-16$5.96$6.15114,400
2008-12-15$4.78$4.93135,500
2008-12-12$5.17$5.34179,800
2008-12-11$4.93$5.09130,700
2008-12-10$5.26$5.43192,100
2008-12-09$5.42$5.59119,200
2008-12-08$5.96$6.15189,600
2008-12-05$5.30$5.47171,400
2008-12-04$5.24$5.41116,900
2008-12-03$5.57$5.75126,000
2008-12-02$4.70$4.85140,200
2008-12-01$4.81$4.96102,200
2008-11-28$5.76$5.9420,600
2008-11-26$5.79$5.9792,100
2008-11-25$5.19$5.36112,800
2008-11-24$5.39$5.56115,600
2008-11-21$5.26$5.43205,700
2008-11-20$4.54$4.69150,100
2008-11-19$4.57$4.72128,800
2008-11-18$5.16$5.3297,400
2008-11-17$5.46$5.63118,300
2008-11-14$5.50$5.68111,500
2008-11-13$5.88$6.07180,500
2008-11-12$5.15$5.31196,800
2008-11-11$5.94$6.13222,200
2008-11-10$6.92$7.14204,200
2008-11-07$7.24$7.4788,900
2008-11-06$6.81$7.03147,700
2008-11-05$7.40$7.6494,100
2008-11-04$8.11$8.37186,500
2008-11-03$8.88$9.16101,300
2008-10-31$8.75$9.03264,600
2008-10-30$8.10$8.36640,200
2008-10-29$7.04$7.26175,500
2008-10-28$6.76$6.98138,800
2008-10-27$5.82$6.0187,700
2008-10-24$6.23$6.43113,500
2008-10-23$6.64$6.8591,700
2008-10-22$6.48$6.69103,900
2008-10-21$6.88$7.1095,900
2008-10-20$7.16$7.39214,300
2008-10-17$6.43$6.64220,600
2008-10-16$6.49$6.70226,400
2008-10-15$6.13$6.33189,400
2008-10-14$6.13$6.33240,000
2008-10-13$7.79$8.04208,800
2008-10-10$7.30$7.53159,900
2008-10-09$6.95$7.17209,000
2008-10-08$7.94$8.19484,700
2008-10-07$8.79$9.07142,900
2008-10-06$9.95$10.27172,000
2008-10-03$10.19$10.52132,000
2008-10-02$10.37$10.70188,400
2008-10-01$11.05$11.40138,700
2008-09-30$12.06$12.45129,600
2008-09-29$11.60$11.97122,800
2008-09-26$12.58$12.9896,400
2008-09-25$12.70$13.11108,500
2008-09-24$12.31$12.7075,900
2008-09-23$12.61$13.0193,500
2008-09-22$13.87$14.31164,400
2008-09-19$15.07$15.55519,600
2008-09-18$13.71$14.15246,000
2008-09-17$11.63$12.00328,300
2008-09-16$13.73$14.17160,900
2008-09-15$13.10$13.5281,400
2008-09-12$13.99$14.4482,500
2008-09-11$13.92$14.36125,000
2008-09-10$13.99$14.4479,400
2008-09-09$13.86$14.30194,200
2008-09-08$14.87$15.3590,500
2008-09-05$14.71$15.1891,700
2008-09-04$14.80$15.27124,100
2008-09-03$15.26$15.75158,500
2008-09-02$15.31$15.8098,900
2008-08-29$15.69$16.1990,100
2008-08-28$15.74$16.24269,500
2008-08-27$15.78$16.28108,200
2008-08-26$15.55$16.00160,100
2008-08-25$15.70$16.15108,900
2008-08-22$15.91$16.37120,000
2008-08-21$15.90$16.3686,000
2008-08-20$16.04$16.50158,900
2008-08-19$16.06$16.52121,100
2008-08-18$16.30$16.77126,500
2008-08-15$16.42$16.89279,700
2008-08-14$17.01$17.50141,400
2008-08-13$16.74$17.22167,700
2008-08-12$16.38$16.85217,000
2008-08-11$16.66$17.14170,600
2008-08-08$16.06$16.52150,500
2008-08-07$15.50$15.94323,100
2008-08-06$15.99$16.45250,700
2008-08-05$16.37$16.84217,700
2008-08-04$16.35$16.82296,300
2008-08-01$17.10$17.59288,100
2008-07-31$17.74$18.25853,100
2008-07-30$23.49$24.16237,800
2008-07-29$21.58$22.20144,300
2008-07-28$21.08$21.68122,900
2008-07-25$20.85$21.4568,000
2008-07-24$20.65$21.2468,300
2008-07-23$20.64$21.23183,300
2008-07-22$20.59$21.18254,700
2008-07-21$20.26$20.84171,600
2008-07-18$20.10$20.68206,400
2008-07-17$20.71$21.30118,300
2008-07-16$20.49$21.08170,200
2008-07-15$20.19$20.77237,600
2008-07-14$20.38$20.96219,300
2008-07-11$20.59$21.18262,100
2008-07-10$19.88$20.45185,800
2008-07-09$19.09$19.64179,200
2008-07-08$19.19$19.74217,700
2008-07-07$17.94$18.45241,200
2008-07-03$17.36$17.8691,500
2008-07-02$17.44$17.94290,500
2008-07-01$18.61$19.14247,400
2008-06-30$18.82$19.36219,400
2008-06-27$20.38$20.96534,400
2008-06-26$20.76$21.3598,400
2008-06-25$22.53$23.18141,900
2008-06-24$22.32$22.96206,700
2008-06-23$23.60$24.28185,600
2008-06-20$22.33$22.97201,900
2008-06-19$23.73$24.4154,500
2008-06-18$23.35$24.02105,000
2008-06-17$23.31$23.9898,000
2008-06-16$23.70$24.38214,700
2008-06-13$23.39$24.06130,000
2008-06-12$23.17$23.83110,700
2008-06-11$23.32$23.99136,100
2008-06-10$23.87$24.55195,800
2008-06-09$23.99$24.68253,800
2008-06-06$23.20$23.86253,900
2008-06-05$25.29$26.01108,200
2008-06-04$25.12$25.84128,800
2008-06-03$24.64$25.35190,100
2008-06-02$24.70$25.41120,000
2008-05-30$24.62$25.32156,000
2008-05-29$24.89$25.60113,500
2008-05-28$25.03$25.7597,500
2008-05-27$24.21$24.90203,100
2008-05-23$23.71$24.39167,600
2008-05-22$25.04$25.76129,500
2008-05-21$24.50$25.20182,400
2008-05-20$23.97$24.6696,900
2008-05-19$23.29$23.96104,800
2008-05-16$24.11$24.80123,500
2008-05-15$23.74$24.4296,200
2008-05-14$24.01$24.70160,700
2008-05-13$23.08$23.74173,800
2008-05-12$23.00$23.66357,500
2008-05-09$22.05$22.68240,100
2008-05-08$21.24$21.85111,100
2008-05-07$21.16$21.7787,200
2008-05-06$22.08$22.71128,600
2008-05-05$21.93$22.56102,300
2008-05-02$22.04$22.67196,300
2008-05-01$22.06$22.69225,000
2008-04-30$20.39$20.97281,200
2008-04-29$21.49$22.11149,600
2008-04-28$22.31$22.95152,200
2008-04-25$22.29$22.93234,400
2008-04-24$22.99$23.65170,300
2008-04-23$23.32$23.99151,000
2008-04-22$23.74$24.42222,300
2008-04-21$23.57$24.24136,700
2008-04-18$23.80$24.4889,200
2008-04-17$23.22$23.8867,400
2008-04-16$23.49$24.16150,400
2008-04-15$23.00$23.6661,700
2008-04-14$22.50$23.14100,700
2008-04-11$21.98$22.6183,500
2008-04-10$22.71$23.36167,400
2008-04-09$22.10$22.73129,200
2008-04-08$22.19$22.83104,800
2008-04-07$22.12$22.75111,600
2008-04-04$22.12$22.75152,700
2008-04-03$22.06$22.6980,100
2008-04-02$21.84$22.4795,400
2008-04-01$21.83$22.46181,300
2008-03-31$21.20$21.81130,200
2008-03-28$20.97$21.57110,300
2008-03-27$21.75$22.37146,000
2008-03-26$22.60$23.25251,400
2008-03-25$21.45$22.06134,700
2008-03-24$21.00$21.60141,100
2008-03-20$20.84$21.44398,100
2008-03-19$20.74$21.33165,900
2008-03-18$21.31$21.92257,700
2008-03-17$19.87$20.44164,900
2008-03-14$20.73$21.32205,700
2008-03-13$21.81$22.43159,400
2008-03-12$20.85$21.45237,000
2008-03-11$20.97$21.52189,600
2008-03-10$20.07$20.60278,900
2008-03-07$20.31$20.84122,300
2008-03-06$20.11$20.64139,600
2008-03-05$20.50$21.04115,500
2008-03-04$20.22$20.75209,800
2008-03-03$19.97$20.49216,600
2008-02-29$18.74$19.23118,300
2008-02-28$19.47$19.98138,800
2008-02-27$19.62$20.13128,100
2008-02-26$19.90$20.42219,500
2008-02-25$20.19$20.72157,400
2008-02-22$18.99$19.49132,600
2008-02-21$19.27$19.77120,800
2008-02-20$19.68$20.20104,200
2008-02-19$20.23$20.76133,700
2008-02-15$19.69$20.21166,600
2008-02-14$19.40$19.91188,100
2008-02-13$20.07$20.60348,300
2008-02-12$19.48$19.99265,000
2008-02-11$18.78$19.27229,000
2008-02-08$19.00$19.50381,100
2008-02-07$16.64$17.08161,500
2008-02-06$15.35$15.75110,300
2008-02-05$15.48$15.89144,200
2008-02-04$15.78$16.19117,100
2008-02-01$16.36$16.79295,500
2008-01-31$15.77$16.18135,900
2008-01-30$15.23$15.6395,600
2008-01-29$15.69$16.1087,200
2008-01-28$15.87$16.2964,400
2008-01-25$15.07$15.46283,200
2008-01-24$14.54$14.92118,000
2008-01-23$15.21$15.61177,600
2008-01-22$14.51$14.89288,100
2008-01-18$14.10$14.47228,900
2008-01-17$14.97$15.36124,800
2008-01-16$15.58$15.99166,000
2008-01-15$15.77$16.18122,500
2008-01-14$16.45$16.8890,100
2008-01-11$16.21$16.63205,100
2008-01-10$16.73$17.17266,700
2008-01-09$15.96$16.38310,500
2008-01-08$16.70$17.14195,500
2008-01-07$16.21$16.63154,000
2008-01-04$16.52$16.95116,600
2008-01-03$16.96$17.40251,400
2008-01-02$17.14$17.59161,200