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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$28.07$29.42159,300
2011-12-29$28.28$29.64258,300
2011-12-28$28.15$29.51151,800
2011-12-27$28.36$29.73157,300
2011-12-23$28.33$29.70133,700
2011-12-22$28.42$29.79159,900
2011-12-21$28.44$29.81124,000
2011-12-20$28.73$30.12456,900
2011-12-19$28.04$29.3996,100
2011-12-16$28.76$30.15129,100
2011-12-15$28.60$29.9879,900
2011-12-14$27.89$29.24109,800
2011-12-13$29.14$30.55139,300
2011-12-12$29.94$31.38120,000
2011-12-09$29.94$31.3885,200
2011-12-08$28.93$30.33119,800
2011-12-07$29.79$31.2396,500
2011-12-06$29.71$31.14204,100
2011-12-05$29.30$30.71171,400
2011-12-02$29.07$30.4776,300
2011-12-01$29.01$30.41169,800
2011-11-30$29.06$30.46346,600
2011-11-29$27.03$28.33123,700
2011-11-28$26.95$28.25181,300
2011-11-25$26.22$27.4865,400
2011-11-23$26.87$28.17160,900
2011-11-22$27.62$28.95151,600
2011-11-21$27.52$28.85110,300
2011-11-18$28.67$30.0555,100
2011-11-17$28.70$30.0888,400
2011-11-16$29.64$31.07111,700
2011-11-15$30.11$31.56192,000
2011-11-14$29.82$31.2681,400
2011-11-11$30.58$32.0584,900
2011-11-10$29.40$30.82102,300
2011-11-09$28.81$30.20127,400
2011-11-08$30.71$32.19152,900
2011-11-07$30.79$32.2757,100
2011-11-04$30.80$32.29156,100
2011-11-03$30.64$32.12120,800
2011-11-02$29.96$31.40124,200
2011-11-01$28.53$29.91137,900
2011-10-31$30.20$31.66101,000
2011-10-28$31.49$33.01142,800
2011-10-27$31.16$32.66192,400
2011-10-26$28.95$30.3581,800
2011-10-25$27.93$29.28103,700
2011-10-24$28.84$30.23133,800
2011-10-21$27.71$29.0598,200
2011-10-20$26.89$28.19118,300
2011-10-19$26.63$27.91116,900
2011-10-18$27.94$29.29123,900
2011-10-17$27.00$28.3098,000
2011-10-14$28.32$29.69156,800
2011-10-13$27.71$29.0587,500
2011-10-12$27.46$28.78169,600
2011-10-11$26.83$28.12161,400
2011-10-10$26.46$27.74126,300
2011-10-07$24.75$25.94176,800
2011-10-06$25.15$26.36151,800
2011-10-05$24.22$25.39175,000
2011-10-04$23.46$24.59243,200
2011-10-03$22.33$23.41270,500
2011-09-30$24.21$25.38182,800
2011-09-29$25.09$26.30142,900
2011-09-28$24.13$25.29199,100
2011-09-27$26.01$27.26176,400
2011-09-26$25.18$26.39119,000
2011-09-23$24.15$25.31147,200
2011-09-22$23.99$25.15307,800
2011-09-21$25.60$26.83215,000
2011-09-20$27.52$28.85208,500
2011-09-19$27.27$28.59127,900
2011-09-16$27.65$28.98151,500
2011-09-15$27.32$28.64168,100
2011-09-14$25.88$27.13230,300
2011-09-13$25.78$27.02189,300
2011-09-12$24.96$26.16125,600
2011-09-09$24.89$26.09184,300
2011-09-08$25.53$26.76108,200
2011-09-07$26.40$27.67143,800
2011-09-06$24.99$26.20131,600
2011-09-02$25.05$26.26138,300
2011-09-01$25.79$27.03135,900
2011-08-31$27.05$28.35138,900
2011-08-30$27.13$28.44163,000
2011-08-29$26.97$28.27160,700
2011-08-26$25.13$26.34101,100
2011-08-25$24.00$25.16134,600
2011-08-24$24.20$25.37130,500
2011-08-23$24.09$25.25429,400
2011-08-22$22.34$23.42160,900
2011-08-19$21.74$22.79212,500
2011-08-18$22.55$23.64160,300
2011-08-17$24.89$26.0991,300
2011-08-16$24.58$25.77170,000
2011-08-15$25.79$27.03110,100
2011-08-12$24.92$26.12128,500
2011-08-11$24.88$26.08299,500
2011-08-10$23.36$24.49300,100
2011-08-09$22.67$23.76670,300
2011-08-08$22.38$23.46671,900
2011-08-05$25.69$26.93414,700
2011-08-04$25.63$26.87525,700
2011-08-03$29.73$31.16297,300
2011-08-02$31.50$33.02129,900
2011-08-01$32.18$33.73129,300
2011-07-29$32.12$33.67218,500
2011-07-28$32.16$33.71108,900
2011-07-27$32.33$33.89165,700
2011-07-26$33.68$35.3088,700
2011-07-25$34.04$35.6863,500
2011-07-22$34.39$36.0580,800
2011-07-21$34.39$36.05100,900
2011-07-20$34.13$35.7878,000
2011-07-19$33.46$35.07138,400
2011-07-18$32.91$34.50100,300
2011-07-15$33.91$35.55100,200
2011-07-14$33.83$35.46164,100
2011-07-13$34.58$36.25146,600
2011-07-12$34.20$35.8591,900
2011-07-11$34.25$35.90113,500
2011-07-08$35.39$37.1089,500
2011-07-07$35.69$37.41127,900
2011-07-06$34.97$36.66144,300
2011-07-05$34.95$36.64190,900
2011-07-01$34.70$36.37199,400
2011-06-30$33.61$35.23182,000
2011-06-29$33.02$34.61366,300
2011-06-28$32.41$33.97362,800
2011-06-27$32.25$33.81762,400
2011-06-24$30.86$32.354,692,000
2011-06-23$32.19$33.74311,100
2011-06-22$32.12$33.67243,000
2011-06-21$32.56$34.13293,500
2011-06-20$31.32$32.83274,400
2011-06-17$31.01$32.51240,300
2011-06-16$33.20$34.80248,800
2011-06-15$33.33$34.94202,700
2011-06-14$33.72$35.35292,600
2011-06-13$33.66$35.28312,700
2011-06-10$33.03$34.62322,900
2011-06-09$33.22$34.82149,000
2011-06-08$32.41$33.97218,700
2011-06-07$32.31$33.87171,000
2011-06-06$32.18$33.73140,300
2011-06-03$32.53$34.10151,000
2011-06-02$32.70$34.28125,300
2011-06-01$32.47$34.04192,000
2011-05-31$33.89$35.52381,600
2011-05-27$33.03$34.6271,000
2011-05-26$32.53$34.10101,500
2011-05-25$31.89$33.4361,000
2011-05-24$31.51$33.0389,700
2011-05-23$31.32$32.83100,400
2011-05-20$31.74$33.2784,400
2011-05-19$32.35$33.9183,000
2011-05-18$32.20$33.75227,800
2011-05-17$31.25$32.76216,900
2011-05-16$32.35$33.91187,200
2011-05-13$32.73$34.31130,000
2011-05-12$32.45$34.01195,800
2011-05-11$32.60$34.17230,200
2011-05-10$31.67$33.20603,900
2011-05-09$34.69$36.36297,000
2011-05-06$34.08$35.72200,000
2011-05-05$33.24$34.84272,200
2011-05-04$32.50$34.07306,600
2011-05-03$33.74$35.37455,800
2011-05-02$36.20$37.95219,000
2011-04-29$37.66$39.48206,000
2011-04-28$36.29$38.04244,000
2011-04-27$35.04$36.73109,000
2011-04-26$35.43$37.14141,100
2011-04-25$35.25$36.95178,100
2011-04-21$34.70$36.37166,600
2011-04-20$33.82$35.45145,200
2011-04-19$33.37$34.98113,900
2011-04-18$32.94$34.5370,400
2011-04-15$33.14$34.74198,200
2011-04-14$32.46$34.03196,600
2011-04-13$32.29$33.85154,400
2011-04-12$31.75$33.28115,000
2011-04-11$32.34$33.90126,900
2011-04-08$32.41$33.9773,500
2011-04-07$32.40$33.96118,400
2011-04-06$32.95$34.54257,700
2011-04-05$32.01$33.55149,300
2011-04-04$31.39$32.90202,500
2011-04-01$31.01$32.51171,100
2011-03-31$31.94$33.4888,400
2011-03-30$31.40$32.91238,200
2011-03-29$29.33$30.7450,200
2011-03-28$29.24$30.6596,100
2011-03-25$29.25$30.6693,400
2011-03-24$29.17$30.5886,400
2011-03-23$29.00$30.4072,600
2011-03-22$28.07$29.4243,500
2011-03-21$28.50$29.87100,800
2011-03-18$27.52$28.85224,400
2011-03-17$28.15$29.5154,600
2011-03-16$27.87$29.21126,100
2011-03-15$28.64$30.02108,100
2011-03-14$29.14$30.55128,200
2011-03-11$27.95$29.30126,600
2011-03-10$28.09$29.44106,400
2011-03-09$28.58$29.96115,200
2011-03-08$28.52$29.90232,100
2011-03-07$28.89$30.28565,800
2011-03-04$26.35$27.6292,300
2011-03-03$26.58$27.8647,200
2011-03-02$26.10$27.36109,400
2011-03-01$25.61$26.85236,100
2011-02-28$26.81$28.10170,400
2011-02-25$26.96$28.26139,300
2011-02-24$26.87$28.17153,800
2011-02-23$27.20$28.51245,700
2011-02-22$25.89$27.14115,700
2011-02-18$27.11$28.42217,300
2011-02-17$26.72$28.01172,700
2011-02-16$26.44$27.72267,600
2011-02-15$23.48$24.6175,800
2011-02-14$23.31$24.4333,100
2011-02-11$22.96$24.0779,400
2011-02-10$22.42$23.5059,700
2011-02-09$23.29$24.4142,700
2011-02-08$22.98$24.0941,500
2011-02-07$22.99$24.1079,400
2011-02-04$22.35$23.4380,300
2011-02-03$20.58$21.5767,500
2011-02-02$20.46$21.4562,900
2011-02-01$20.31$21.2966,400
2011-01-31$20.12$21.0963,500
2011-01-28$19.88$20.8435,600
2011-01-27$19.98$20.9421,100
2011-01-26$20.19$21.1639,500
2011-01-25$19.54$20.4853,300
2011-01-24$19.16$20.0883,800
2011-01-21$19.46$20.4036,600
2011-01-20$19.38$20.3179,200
2011-01-19$20.08$21.0588,600
2011-01-18$20.51$21.5087,000
2011-01-14$20.36$21.3467,600
2011-01-13$20.61$21.6027,400
2011-01-12$20.73$21.7331,200
2011-01-11$20.61$21.6041,300
2011-01-10$20.67$21.6750,500
2011-01-07$20.47$21.46141,300
2011-01-06$20.39$21.3738,700
2011-01-05$20.51$21.50118,900
2011-01-04$20.27$21.25106,600
2011-01-03$20.68$21.6854,700