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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$9.85$9.9129,200
2003-12-30$10.23$10.2945,600
2003-12-29$10.10$10.16112,000
2003-12-26$9.95$10.015,000
2003-12-24$9.92$9.9826,000
2003-12-23$9.92$9.98284,600
2003-12-22$9.92$9.9852,200
2003-12-19$9.87$9.9380,400
2003-12-18$9.93$9.99147,800
2003-12-17$9.94$10.0079,600
2003-12-16$9.90$9.9643,200
2003-12-15$9.78$9.8442,400
2003-12-12$9.83$9.8961,400
2003-12-11$9.70$9.7670,800
2003-12-10$9.66$9.7232,200
2003-12-09$9.80$9.8693,600
2003-12-08$9.68$9.7341,000
2003-12-05$9.45$9.5117,800
2003-12-04$9.50$9.5653,000
2003-12-03$9.40$9.4644,600
2003-12-02$9.65$9.7173,600
2003-12-01$9.54$9.6055,800
2003-11-28$9.69$9.7420,200
2003-11-26$9.66$9.7126,000
2003-11-25$9.72$9.78115,600
2003-11-24$9.63$9.6868,600
2003-11-21$8.55$8.6046,000
2003-11-20$8.44$8.4921,800
2003-11-19$8.60$8.6526,400
2003-11-18$8.58$8.6321,200
2003-11-17$8.67$8.7230,800
2003-11-14$8.98$9.0315,600
2003-11-13$9.08$9.139,600
2003-11-12$8.93$8.9926,200
2003-11-11$8.75$8.8035,400
2003-11-10$9.10$9.1629,000
2003-11-07$9.40$9.4529,800
2003-11-06$9.66$9.7116,200
2003-11-05$9.41$9.4724,000
2003-11-04$9.37$9.4223,600
2003-11-03$9.30$9.3625,000
2003-10-31$9.31$9.3636,200
2003-10-30$9.70$9.7522,400
2003-10-29$9.68$9.7337,400
2003-10-28$9.67$9.7333,400
2003-10-27$8.95$9.0012,200
2003-10-24$8.68$8.7339,200
2003-10-23$8.65$8.7061,000
2003-10-22$8.78$8.8356,600
2003-10-21$9.30$9.367,800
2003-10-20$9.36$9.4112,600
2003-10-17$9.36$9.4111,600
2003-10-16$9.60$9.6611,200
2003-10-15$9.50$9.5634,200
2003-10-14$9.67$9.7313,800
2003-10-13$9.68$9.7310,800
2003-10-10$9.43$9.4814,200
2003-10-09$9.59$9.6517,000
2003-10-08$9.42$9.4714,800
2003-10-07$9.38$9.4313,800
2003-10-06$9.25$9.3112,400
2003-10-03$9.20$9.2512,000
2003-10-02$9.15$9.205,200
2003-10-01$9.13$9.1830,600
2003-09-30$8.70$8.7548,600
2003-09-29$8.98$9.0332,600
2003-09-26$8.78$8.8320,600
2003-09-25$8.95$9.0021,400
2003-09-24$8.98$9.0320,600
2003-09-23$9.00$9.0641,000
2003-09-22$9.04$9.1021,400
2003-09-19$9.10$9.1638,400
2003-09-18$8.78$8.8325,400
2003-09-17$8.75$8.8013,000
2003-09-16$8.79$8.8421,600
2003-09-15$8.78$8.8338,400
2003-09-12$8.83$8.8813,000
2003-09-11$8.90$8.9529,400
2003-09-10$9.03$9.0854,000
2003-09-09$9.03$9.0825,000
2003-09-08$9.10$9.1625,400
2003-09-05$8.99$9.0420,600
2003-09-04$9.01$9.0732,800
2003-09-03$9.23$9.2866,400
2003-09-02$9.00$9.0631,200
2003-08-29$8.91$8.9612,200
2003-08-28$8.99$9.0521,000
2003-08-27$8.98$9.0310,600
2003-08-26$9.03$9.0855,600
2003-08-25$8.63$8.68172,200
2003-08-22$9.33$9.3829,400
2003-08-21$9.48$9.5348,200
2003-08-20$9.05$9.1137,400
2003-08-19$8.90$8.9539,600
2003-08-18$8.86$8.9166,200
2003-08-15$8.01$8.0531,400
2003-08-14$7.65$7.7041,200
2003-08-13$7.25$7.2943,000
2003-08-12$7.40$7.4557,200
2003-08-11$7.20$7.2438,800
2003-08-08$7.08$7.1214,400
2003-08-07$7.11$7.1515,000
2003-08-06$7.08$7.1279,400
2003-08-05$7.00$7.0448,000
2003-08-04$7.10$7.1476,400
2003-08-01$7.33$7.3783,000
2003-07-31$7.35$7.4050,400
2003-07-30$7.28$7.3234,400
2003-07-29$7.15$7.1931,200
2003-07-28$6.93$6.9727,600
2003-07-25$6.91$6.9512,000
2003-07-24$6.85$6.8943,400
2003-07-23$6.97$7.017,400
2003-07-22$6.98$7.0238,400
2003-07-21$6.89$6.93162,400
2003-07-18$7.00$7.0422,000
2003-07-17$7.10$7.1430,600
2003-07-16$7.18$7.22251,000
2003-07-15$7.17$7.2154,800
2003-07-14$7.16$7.2029,600
2003-07-11$7.04$7.0837,000
2003-07-10$6.91$6.9570,000
2003-07-09$6.99$7.0384,200
2003-07-08$7.30$7.3547,000
2003-07-07$7.33$7.3774,600
2003-07-03$7.06$7.1021,000
2003-07-02$7.04$7.0843,200
2003-07-01$6.79$6.8372,600
2003-06-30$6.95$6.9966,400
2003-06-27$7.03$7.0753,800
2003-06-26$7.00$7.0445,400
2003-06-25$7.15$7.1929,400
2003-06-24$7.28$7.32145,800
2003-06-23$7.06$7.1038,400
2003-06-20$7.30$7.355,000
2003-06-19$7.20$7.2410,000
2003-06-18$7.29$7.3364,400
2003-06-17$7.18$7.2269,800
2003-06-16$7.18$7.2269,200
2003-06-13$6.92$6.96127,600
2003-06-12$6.99$7.0379,600
2003-06-11$6.89$6.9371,800
2003-06-10$6.90$6.9495,400
2003-06-09$6.55$6.5928,600
2003-06-06$6.61$6.6517,800
2003-06-05$6.75$6.7911,400
2003-06-04$6.70$6.7431,600
2003-06-03$6.62$6.6617,600
2003-06-02$6.70$6.7425,800
2003-05-30$6.68$6.72114,800
2003-05-29$6.50$6.5463,200
2003-05-28$6.33$6.37103,600
2003-05-27$6.47$6.5122,800
2003-05-23$6.47$6.5118,800
2003-05-22$6.44$6.4844,200
2003-05-21$6.45$6.4938,800
2003-05-20$6.45$6.4939,400
2003-05-19$6.45$6.499,600
2003-05-16$6.45$6.4965,400
2003-05-15$6.68$6.7055,600
2003-05-14$6.60$6.6237,800
2003-05-13$6.75$6.7615,600
2003-05-12$6.96$6.9820,800
2003-05-09$7.12$7.1315,600
2003-05-08$7.08$7.0911,400
2003-05-07$7.26$7.2727,000
2003-05-06$7.31$7.3322,400
2003-05-05$7.38$7.3921,200
2003-05-02$7.30$7.3235,400
2003-05-01$7.18$7.1943,800
2003-04-30$7.40$7.4286,200
2003-04-29$7.49$7.5140,000
2003-04-28$7.88$7.8922,800
2003-04-25$7.85$7.8610,000
2003-04-24$7.78$7.7924,200
2003-04-23$7.56$7.5821,600
2003-04-22$7.27$7.2813,400
2003-04-21$7.45$7.4717,000
2003-04-17$7.25$7.2740,400
2003-04-16$7.34$7.357,200
2003-04-15$7.45$7.4734,800
2003-04-14$7.58$7.596,200
2003-04-11$7.60$7.627,800
2003-04-10$7.78$7.8014,600
2003-04-09$7.88$7.8911,200
2003-04-08$7.97$7.996,200
2003-04-07$7.86$7.8811,800
2003-04-04$7.80$7.8211,600
2003-04-03$7.73$7.7411,400
2003-04-02$7.62$7.649,600
2003-04-01$7.26$7.2821,400
2003-03-31$7.25$7.2610,600
2003-03-28$7.35$7.3718,400
2003-03-27$7.43$7.4426,000
2003-03-26$7.50$7.5226,200
2003-03-25$7.70$7.728,200
2003-03-24$7.76$7.783,600
2003-03-21$7.85$7.8725,000
2003-03-20$7.65$7.6727,200
2003-03-19$7.55$7.5742,000
2003-03-18$7.45$7.4714,200
2003-03-17$7.47$7.4919,000
2003-03-14$6.71$6.7266,600
2003-03-13$6.92$6.9438,600
2003-03-12$7.25$7.2627,400
2003-03-11$7.51$7.5310,000
2003-03-10$7.56$7.5722,400
2003-03-07$7.60$7.6230,200
2003-03-06$7.63$7.6517,800
2003-03-05$7.70$7.7111,400
2003-03-04$7.90$7.9112,200
2003-03-03$7.88$7.895,200
2003-02-28$8.05$8.0718,600
2003-02-27$8.00$8.0211,400
2003-02-26$7.93$7.9411,000
2003-02-25$8.04$8.0520,600
2003-02-24$7.94$7.9524,600
2003-02-21$7.98$8.0029,200
2003-02-20$7.93$7.9435,800
2003-02-19$7.91$7.9232,400
2003-02-18$7.80$7.8230,000
2003-02-14$7.60$7.6234,000
2003-02-13$7.45$7.4723,200
2003-02-12$7.25$7.2734,000
2003-02-11$7.05$7.0636,000
2003-02-10$7.00$7.0252,400
2003-02-07$6.63$6.6424,400
2003-02-06$6.60$6.6225,400
2003-02-05$6.55$6.5789,000
2003-02-04$7.07$7.0936,400
2003-02-03$7.02$7.0418,800
2003-01-31$7.10$7.1237,400
2003-01-30$7.25$7.2795,800
2003-01-29$7.50$7.52170,600
2003-01-28$8.65$8.6726,000
2003-01-27$8.25$8.2737,800
2003-01-24$8.30$8.3212,200
2003-01-23$8.65$8.6719,800
2003-01-22$8.55$8.578,200
2003-01-21$8.74$8.767,400
2003-01-17$8.91$8.938,200
2003-01-16$8.96$8.9811,200
2003-01-15$9.03$9.0510,000
2003-01-14$9.00$9.0210,400
2003-01-13$8.94$8.9622,800
2003-01-10$8.99$9.0117,000
2003-01-09$9.03$9.0525,800
2003-01-08$8.60$8.6237,000
2003-01-07$8.55$8.5736,400
2003-01-06$8.62$8.6460,600
2003-01-03$7.71$7.7254,200
2003-01-02$7.90$7.9234,200