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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$10.09$10.5850,000
2009-12-30$10.28$10.7863,700
2009-12-29$10.01$10.4916,700
2009-12-28$9.93$10.4133,300
2009-12-24$9.83$10.3029,100
2009-12-23$9.89$10.3789,700
2009-12-22$9.59$10.0541,000
2009-12-21$9.93$10.4166,700
2009-12-18$9.77$10.24158,900
2009-12-17$9.77$10.2476,000
2009-12-16$9.87$10.3572,800
2009-12-15$9.99$10.4767,600
2009-12-14$10.47$10.9743,800
2009-12-11$10.38$10.8891,400
2009-12-10$10.16$10.65144,600
2009-12-09$10.28$10.7835,200
2009-12-08$10.25$10.7458,800
2009-12-07$10.40$10.9046,800
2009-12-04$10.35$10.8560,300
2009-12-03$9.92$10.4075,300
2009-12-02$9.87$10.3593,600
2009-12-01$9.38$9.83180,300
2009-11-30$8.89$9.32112,200
2009-11-27$9.45$9.9151,800
2009-11-25$10.52$11.0325,400
2009-11-24$10.88$11.4040,200
2009-11-23$10.96$11.4961,900
2009-11-20$10.70$11.2266,800
2009-11-19$10.95$11.4853,200
2009-11-18$11.64$12.2024,700
2009-11-17$11.75$12.3244,100
2009-11-16$11.87$12.4464,900
2009-11-13$11.36$11.91115,200
2009-11-12$11.53$12.09131,700
2009-11-11$12.35$12.9561,000
2009-11-10$12.25$12.8438,200
2009-11-09$12.33$12.9288,400
2009-11-06$12.21$12.8091,200
2009-11-05$11.84$12.4175,100
2009-11-04$10.84$11.3694,500
2009-11-03$11.10$11.64109,100
2009-11-02$11.09$11.62137,100
2009-10-30$11.82$12.39197,500
2009-10-29$14.13$14.8151,900
2009-10-28$13.86$14.5367,800
2009-10-27$14.10$14.7851,200
2009-10-26$14.05$14.7358,600
2009-10-23$14.16$14.8447,600
2009-10-22$14.53$15.2333,300
2009-10-21$14.02$14.7069,400
2009-10-20$13.97$14.6477,000
2009-10-19$14.99$15.7122,500
2009-10-16$14.57$15.2753,200
2009-10-15$14.94$15.6644,700
2009-10-14$15.08$15.8137,100
2009-10-13$15.06$15.7953,500
2009-10-12$15.17$15.9029,900
2009-10-09$15.41$16.1538,000
2009-10-08$15.12$15.8542,500
2009-10-07$14.88$15.6052,600
2009-10-06$15.39$16.1392,100
2009-10-05$14.73$15.4475,500
2009-10-02$14.06$14.7459,800
2009-10-01$13.96$14.6356,500
2009-09-30$14.75$15.4692,300
2009-09-29$15.09$15.8246,400
2009-09-28$15.63$16.3847,500
2009-09-25$14.57$15.2736,900
2009-09-24$14.93$15.6570,300
2009-09-23$15.09$15.8274,800
2009-09-22$15.51$16.2679,000
2009-09-21$15.39$16.1382,900
2009-09-18$15.04$15.7798,100
2009-09-17$14.59$15.2970,200
2009-09-16$14.94$15.6658,600
2009-09-15$14.45$15.1552,000
2009-09-14$13.69$14.3566,500
2009-09-11$13.56$14.2198,100
2009-09-10$13.32$13.96120,000
2009-09-09$13.73$14.3973,300
2009-09-08$13.50$14.15101,900
2009-09-04$13.28$13.9271,000
2009-09-03$13.32$13.9671,200
2009-09-02$13.48$14.1393,200
2009-09-01$13.39$14.04130,500
2009-08-31$13.68$14.34108,900
2009-08-28$13.40$14.0561,400
2009-08-27$13.85$14.5250,300
2009-08-26$13.95$14.62109,500
2009-08-25$14.19$14.8763,500
2009-08-24$13.90$14.57100,000
2009-08-21$14.13$14.81108,800
2009-08-20$13.38$14.0346,800
2009-08-19$13.07$13.7078,000
2009-08-18$13.17$13.8168,300
2009-08-17$12.39$12.9969,600
2009-08-14$12.54$13.1478,200
2009-08-13$13.35$13.9987,300
2009-08-12$13.23$13.8772,600
2009-08-11$12.40$13.0083,000
2009-08-10$12.16$12.75118,100
2009-08-07$12.01$12.59144,200
2009-08-06$11.97$12.55102,100
2009-08-05$11.85$12.42149,700
2009-08-04$13.09$13.72106,100
2009-08-03$12.81$13.43112,700
2009-07-31$11.94$12.52122,100
2009-07-30$11.94$12.52119,700
2009-07-29$11.65$12.21272,400
2009-07-28$12.00$12.5876,000
2009-07-27$11.77$12.3487,500
2009-07-24$11.83$12.4073,600
2009-07-23$12.13$12.72119,900
2009-07-22$11.56$12.12147,100
2009-07-21$12.11$12.69207,100
2009-07-20$12.36$12.9696,200
2009-07-17$12.36$12.96104,100
2009-07-16$12.38$12.98162,100
2009-07-15$11.88$12.45231,300
2009-07-14$10.83$11.3593,100
2009-07-13$10.81$11.3379,200
2009-07-10$10.29$10.7948,600
2009-07-09$10.22$10.71109,000
2009-07-08$10.02$10.50190,800
2009-07-07$10.00$10.48153,900
2009-07-06$10.25$10.7493,400
2009-07-02$10.25$10.7491,900
2009-07-01$11.01$11.5485,100
2009-06-30$10.75$11.27117,600
2009-06-29$10.75$11.2770,800
2009-06-26$10.44$10.94775,400
2009-06-25$10.56$11.07100,100
2009-06-24$10.15$10.64125,300
2009-06-23$9.95$10.43119,300
2009-06-22$9.94$10.42153,100
2009-06-19$10.09$10.58136,800
2009-06-18$10.07$10.5694,500
2009-06-17$9.79$10.2658,400
2009-06-16$10.00$10.48146,700
2009-06-15$10.21$10.70108,400
2009-06-12$10.65$11.1686,200
2009-06-11$10.71$11.2376,000
2009-06-10$10.56$11.0780,700
2009-06-09$10.72$11.2460,800
2009-06-08$10.68$11.2066,100
2009-06-05$10.87$11.3993,700
2009-06-04$10.86$11.3896,500
2009-06-03$11.31$11.86147,400
2009-06-02$10.58$11.09197,200
2009-06-01$9.60$10.06105,400
2009-05-29$8.91$9.3473,600
2009-05-28$8.53$8.9477,100
2009-05-27$8.25$8.6580,500
2009-05-26$8.44$8.8572,700
2009-05-22$7.75$8.1260,300
2009-05-21$8.02$8.4186,700
2009-05-20$8.29$8.6999,200
2009-05-19$7.96$8.34128,000
2009-05-18$7.64$8.0185,900
2009-05-15$6.98$7.3268,100
2009-05-14$7.09$7.43121,600
2009-05-13$7.02$7.36109,500
2009-05-12$8.08$8.47106,600
2009-05-11$8.52$8.9365,000
2009-05-08$8.82$9.25106,600
2009-05-07$8.20$8.60166,400
2009-05-06$9.26$9.71219,100
2009-05-05$9.38$9.83138,600
2009-05-04$8.04$8.43111,800
2009-05-01$7.67$8.0493,300
2009-04-30$7.86$8.24248,500
2009-04-29$7.88$8.26131,700
2009-04-28$7.00$7.3482,900
2009-04-27$6.31$6.6191,300
2009-04-24$5.94$6.23190,900
2009-04-23$5.36$5.62104,400
2009-04-22$5.07$5.31119,100
2009-04-21$4.93$5.1770,600
2009-04-20$4.52$4.7459,900
2009-04-17$4.74$4.97120,400
2009-04-16$4.70$4.9384,600
2009-04-15$4.48$4.7036,400
2009-04-14$4.16$4.3675,200
2009-04-13$4.47$4.6958,900
2009-04-09$4.58$4.8094,600
2009-04-08$4.21$4.4152,300
2009-04-07$3.96$4.1559,000
2009-04-06$4.06$4.26102,100
2009-04-03$4.32$4.5392,000
2009-04-02$4.26$4.47205,100
2009-04-01$3.95$4.1461,200
2009-03-31$3.77$3.9588,700
2009-03-30$3.73$3.9159,100
2009-03-27$4.15$4.3534,000
2009-03-26$4.70$4.9348,000
2009-03-25$4.37$4.5844,400
2009-03-24$3.99$4.1848,300
2009-03-23$4.62$4.84113,500
2009-03-20$3.81$3.99125,200
2009-03-19$4.05$4.2542,900
2009-03-18$4.19$4.3961,300
2009-03-17$3.74$3.9244,500
2009-03-16$3.50$3.6770,600
2009-03-13$3.47$3.6454,100
2009-03-12$3.42$3.5876,700
2009-03-11$3.22$3.3249,900
2009-03-10$3.14$3.24107,100
2009-03-09$2.79$2.8888,900
2009-03-06$3.04$3.14142,300
2009-03-05$3.31$3.42184,800
2009-03-04$3.69$3.8190,100
2009-03-03$3.54$3.6578,500
2009-03-02$3.63$3.7576,000
2009-02-27$4.04$4.1771,400
2009-02-26$4.04$4.17125,700
2009-02-25$4.02$4.15192,000
2009-02-24$4.27$4.41140,100
2009-02-23$4.02$4.15102,100
2009-02-20$4.24$4.38118,300
2009-02-19$4.41$4.5588,400
2009-02-18$4.52$4.6680,700
2009-02-17$4.42$4.5678,300
2009-02-13$4.73$4.88108,100
2009-02-12$4.57$4.7299,300
2009-02-11$4.40$4.5471,300
2009-02-10$4.17$4.30130,700
2009-02-09$4.83$4.98136,200
2009-02-06$4.32$4.4669,600
2009-02-05$4.11$4.2499,300
2009-02-04$4.57$4.7255,700
2009-02-03$4.68$4.83114,800
2009-02-02$4.61$4.7676,300
2009-01-30$4.87$5.0333,400
2009-01-29$5.27$5.4440,500
2009-01-28$5.69$5.8756,000
2009-01-27$5.37$5.5459,200
2009-01-26$5.34$5.5129,100
2009-01-23$5.05$5.2142,600
2009-01-22$5.09$5.2530,500
2009-01-21$5.42$5.5945,000
2009-01-20$4.75$4.9039,300
2009-01-16$5.36$5.5347,300
2009-01-15$5.33$5.5072,900
2009-01-14$5.19$5.3658,300
2009-01-13$5.64$5.8255,300
2009-01-12$5.55$5.7378,700
2009-01-09$5.94$6.1362,800
2009-01-08$6.31$6.5173,900
2009-01-07$5.68$5.8663,600
2009-01-06$5.99$6.18128,800
2009-01-05$5.84$6.0350,600
2009-01-02$5.86$6.0588,300