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.

View year

Historical Stock Price — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$54.31$62.89160,100
2015-12-30$54.85$63.52128,800
2015-12-29$55.05$63.75149,000
2015-12-28$54.45$63.06167,600
2015-12-24$54.48$63.0992,400
2015-12-23$54.65$63.29115,900
2015-12-22$54.14$62.70216,900
2015-12-21$53.15$61.55291,500
2015-12-18$54.67$63.31646,500
2015-12-17$55.34$64.09171,200
2015-12-16$56.07$64.93207,300
2015-12-15$54.84$63.51240,400
2015-12-14$55.11$63.82203,400
2015-12-11$55.82$64.64212,000
2015-12-10$56.03$64.89399,400
2015-12-09$55.17$63.89143,700
2015-12-08$55.53$64.31131,300
2015-12-07$57.24$66.29219,700
2015-12-04$57.41$66.48163,800
2015-12-03$57.33$66.39141,500
2015-12-02$57.18$66.22224,700
2015-12-01$58.23$67.43146,300
2015-11-30$58.40$67.63262,000
2015-11-27$58.13$67.3241,600
2015-11-25$58.10$67.2874,800
2015-11-24$58.30$67.51144,100
2015-11-23$57.52$66.61107,400
2015-11-20$57.04$66.05146,300
2015-11-19$57.44$66.52126,000
2015-11-18$57.58$66.68125,100
2015-11-17$56.85$65.8391,700
2015-11-16$56.89$65.88104,600
2015-11-13$56.34$65.24101,400
2015-11-12$56.47$65.39129,400
2015-11-11$57.62$66.3780,000
2015-11-10$57.53$66.26106,900
2015-11-09$58.70$67.61170,300
2015-11-06$58.56$67.45234,700
2015-11-05$58.66$67.57331,300
2015-11-04$57.47$66.19641,800
2015-11-03$54.40$62.66216,000
2015-11-02$55.22$63.60170,200
2015-10-30$55.24$63.63111,800
2015-10-29$54.88$63.2192,300
2015-10-28$54.88$63.21158,900
2015-10-27$53.28$61.37133,200
2015-10-26$53.62$61.7694,600
2015-10-23$53.61$61.75120,400
2015-10-22$53.00$61.05130,900
2015-10-21$52.77$60.78104,200
2015-10-20$53.09$61.15108,500
2015-10-19$53.00$61.05127,500
2015-10-16$53.12$61.18110,400
2015-10-15$53.20$61.28187,800
2015-10-14$53.06$61.12127,700
2015-10-13$52.24$60.17221,100
2015-10-12$53.51$61.63266,100
2015-10-09$55.15$63.52302,500
2015-10-08$53.40$61.51385,700
2015-10-07$53.18$61.25495,400
2015-10-06$50.50$58.17462,700
2015-10-05$49.91$57.49189,000
2015-10-02$49.35$56.84153,000
2015-10-01$47.99$55.28218,900
2015-09-30$46.51$53.57261,200
2015-09-29$47.27$54.45192,200
2015-09-28$46.48$53.54120,100
2015-09-25$47.32$54.50162,800
2015-09-24$47.18$54.34175,100
2015-09-23$46.65$53.73141,000
2015-09-22$47.34$54.53160,500
2015-09-21$48.49$55.85194,600
2015-09-18$48.38$55.72218,300
2015-09-17$49.06$56.51129,400
2015-09-16$49.46$56.97108,800
2015-09-15$48.53$55.90251,800
2015-09-14$48.02$55.31192,200
2015-09-11$48.82$56.23161,600
2015-09-10$49.08$56.53231,900
2015-09-09$49.34$56.83193,500
2015-09-08$49.41$56.91184,600
2015-09-04$48.86$56.28204,900
2015-09-03$49.23$56.70239,300
2015-09-02$49.64$57.18336,300
2015-09-01$48.16$55.47179,200
2015-08-31$49.10$56.55303,100
2015-08-28$48.17$55.48325,300
2015-08-27$47.69$54.93358,400
2015-08-26$47.59$54.81435,700
2015-08-25$46.45$53.50272,300
2015-08-24$46.50$53.56532,700
2015-08-21$48.98$56.423,536,700
2015-08-20$46.19$53.20123,500
2015-08-19$46.54$53.6197,800
2015-08-18$46.74$53.84148,500
2015-08-17$46.65$53.7390,200
2015-08-14$46.32$53.35120,500
2015-08-13$46.14$53.14158,700
2015-08-12$46.01$52.99171,000
2015-08-11$44.79$51.5991,300
2015-08-10$44.76$51.56138,000
2015-08-07$43.22$49.78190,300
2015-08-06$44.19$50.90121,000
2015-08-05$43.84$50.50351,700
2015-08-04$41.35$47.63212,500
2015-08-03$42.03$48.41158,800
2015-07-31$43.25$49.82122,400
2015-07-30$42.46$48.9189,600
2015-07-29$42.64$49.11183,600
2015-07-28$42.34$48.7797,000
2015-07-27$41.83$48.18130,700
2015-07-24$42.06$48.45238,200
2015-07-23$42.89$49.40119,200
2015-07-22$43.40$49.99127,200
2015-07-21$43.64$50.2778,200
2015-07-20$43.49$50.0985,900
2015-07-17$43.95$50.6261,000
2015-07-16$44.46$51.2183,400
2015-07-15$44.10$50.79123,300
2015-07-14$43.99$50.67102,200
2015-07-13$43.92$50.59117,700
2015-07-10$43.77$50.41179,000
2015-07-09$43.25$49.8272,000
2015-07-08$43.75$50.39114,500
2015-07-07$43.96$50.6392,900
2015-07-06$44.59$51.3676,400
2015-07-02$44.69$51.47101,900
2015-07-01$44.98$51.8192,900
2015-06-30$45.04$51.88129,800
2015-06-29$45.23$52.1093,100
2015-06-26$46.48$53.54339,100
2015-06-25$46.47$53.5262,600
2015-06-24$46.27$53.2955,100
2015-06-23$46.36$53.4085,500
2015-06-22$46.21$53.23108,400
2015-06-19$46.00$52.98161,700
2015-06-18$45.77$52.7270,200
2015-06-17$45.53$52.4460,000
2015-06-16$46.35$53.39101,700
2015-06-15$46.13$53.13142,800
2015-06-12$46.10$53.1089,500
2015-06-11$46.02$53.01114,300
2015-06-10$45.46$52.36157,300
2015-06-09$44.43$51.18137,300
2015-06-08$43.81$50.4683,500
2015-06-05$43.60$50.22114,100
2015-06-04$43.22$49.78121,100
2015-06-03$43.41$50.00139,600
2015-06-02$43.12$49.67130,500
2015-06-01$43.04$49.57128,800
2015-05-29$42.88$49.39103,600
2015-05-28$43.21$49.7773,200
2015-05-27$43.27$49.84110,500
2015-05-26$43.08$49.6298,500
2015-05-22$43.81$50.4650,900
2015-05-21$44.76$51.56155,000
2015-05-20$44.72$51.5159,800
2015-05-19$44.79$51.5993,300
2015-05-18$44.81$51.61152,500
2015-05-15$44.63$51.41175,400
2015-05-14$44.60$51.37103,500
2015-05-13$44.30$50.68217,300
2015-05-12$44.10$50.45116,300
2015-05-11$44.02$50.36109,400
2015-05-08$44.19$50.55146,000
2015-05-07$43.98$50.31234,900
2015-05-06$44.26$50.63347,200
2015-05-05$44.26$50.63127,300
2015-05-04$44.30$50.68149,700
2015-05-01$44.68$51.11112,900
2015-04-30$43.70$49.99109,100
2015-04-29$44.41$50.8152,300
2015-04-28$45.01$51.49100,900
2015-04-27$44.82$51.27107,200
2015-04-24$45.12$51.6265,200
2015-04-23$45.21$51.72158,400
2015-04-22$44.95$51.42209,900
2015-04-21$44.66$51.0992,800
2015-04-20$44.71$51.15111,300
2015-04-17$43.83$50.1470,200
2015-04-16$44.72$51.1661,500
2015-04-15$45.40$51.94166,900
2015-04-14$45.10$51.5999,700
2015-04-13$45.13$51.6343,100
2015-04-10$45.10$51.5966,800
2015-04-09$45.59$52.1673,700
2015-04-08$45.92$52.5378,400
2015-04-07$46.05$52.6890,300
2015-04-06$46.25$52.9187,900
2015-04-02$46.07$52.7088,100
2015-04-01$46.08$52.7295,200
2015-03-31$46.39$53.07141,500
2015-03-30$46.54$53.24173,300
2015-03-27$46.09$52.73173,500
2015-03-26$45.88$52.49121,000
2015-03-25$45.70$52.28197,400
2015-03-24$45.54$52.1088,200
2015-03-23$45.30$51.82103,900
2015-03-20$44.38$50.77179,700
2015-03-19$44.04$50.3874,000
2015-03-18$44.61$51.0369,600
2015-03-17$44.18$50.54127,900
2015-03-16$44.83$51.29185,400
2015-03-13$44.68$51.1189,500
2015-03-12$44.68$51.11106,700
2015-03-11$43.53$49.8096,600
2015-03-10$43.12$49.33105,200
2015-03-09$43.87$50.19204,400
2015-03-06$43.03$49.2394,800
2015-03-05$43.41$49.66157,400
2015-03-04$44.15$50.51101,700
2015-03-03$44.46$50.8696,700
2015-03-02$45.22$51.73124,000
2015-02-27$44.17$50.53119,800
2015-02-26$43.76$50.0680,400
2015-02-25$43.96$50.29103,800
2015-02-24$43.97$50.30107,800
2015-02-23$43.57$49.84107,400
2015-02-20$43.95$50.28118,700
2015-02-19$43.98$50.31171,400
2015-02-18$43.84$50.15155,700
2015-02-17$42.10$48.1680,300
2015-02-13$42.26$48.3593,400
2015-02-12$42.36$48.4685,200
2015-02-11$42.06$48.1270,600
2015-02-10$42.25$48.3371,500
2015-02-09$42.00$48.0568,600
2015-02-06$42.65$48.7961,400
2015-02-05$42.44$48.5571,200
2015-02-04$41.05$46.96161,400
2015-02-03$40.55$46.39203,200
2015-02-02$39.72$45.44118,300
2015-01-30$39.47$45.15113,100
2015-01-29$39.88$45.62148,300
2015-01-28$40.36$46.1791,300
2015-01-27$41.03$46.94118,500
2015-01-26$41.07$46.98128,300
2015-01-23$41.23$47.1795,800
2015-01-22$41.90$47.93172,100
2015-01-21$42.03$48.0881,400
2015-01-20$42.25$48.33161,200
2015-01-16$42.07$48.13225,500
2015-01-15$40.72$46.58120,600
2015-01-14$41.17$47.1091,900
2015-01-13$41.09$47.01245,800
2015-01-12$40.31$46.1279,600
2015-01-09$40.35$46.1684,600
2015-01-08$41.08$47.00157,900
2015-01-07$40.85$46.7391,100
2015-01-06$41.58$47.5788,400
2015-01-05$42.51$48.63181,800
2015-01-02$42.51$48.6383,100