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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$61.76$74.1670,000
2018-12-28$61.30$73.61137,400
2018-12-27$60.21$72.3092,600
2018-12-26$59.66$71.64120,700
2018-12-24$57.78$69.3853,700
2018-12-21$59.95$71.99440,500
2018-12-20$61.44$73.78111,800
2018-12-19$61.13$73.41103,100
2018-12-18$62.98$75.63112,800
2018-12-17$64.10$76.97136,300
2018-12-14$66.45$79.8077,400
2018-12-13$67.75$81.3688,600
2018-12-12$68.04$81.7077,000
2018-12-11$66.07$79.3459,300
2018-12-10$66.14$79.4267,700
2018-12-07$66.08$79.3576,300
2018-12-06$66.86$80.2972,400
2018-12-04$68.63$82.4181,400
2018-12-03$73.98$88.8466,600
2018-11-30$73.74$88.55102,100
2018-11-29$73.02$87.6996,900
2018-11-28$73.31$88.0386,500
2018-11-27$69.93$83.9737,600
2018-11-26$71.55$85.9242,100
2018-11-23$71.91$86.3520,500
2018-11-21$71.07$85.3447,400
2018-11-20$70.57$84.7492,300
2018-11-19$74.32$89.2556,700
2018-11-16$76.82$92.25162,200
2018-11-15$75.26$89.83146,600
2018-11-14$73.71$87.9874,300
2018-11-13$73.20$87.3893,600
2018-11-12$73.71$87.9858,700
2018-11-09$73.94$88.2667,900
2018-11-08$76.12$90.86104,900
2018-11-07$75.01$89.54111,000
2018-11-06$68.14$81.34112,400
2018-11-05$68.26$81.48102,700
2018-11-02$68.18$81.38141,200
2018-11-01$67.78$80.91105,800
2018-10-31$66.92$79.8857,400
2018-10-30$67.23$80.2549,200
2018-10-29$65.11$77.7250,000
2018-10-26$65.91$78.6780,400
2018-10-25$66.31$79.1559,700
2018-10-24$64.77$77.3160,400
2018-10-23$67.61$80.7040,500
2018-10-22$68.81$82.1461,800
2018-10-19$67.86$81.0057,200
2018-10-18$68.42$81.6756,200
2018-10-17$69.64$83.1353,300
2018-10-16$69.55$83.0263,200
2018-10-15$67.27$80.3047,800
2018-10-12$66.98$79.9564,100
2018-10-11$67.69$80.8083,600
2018-10-10$69.49$82.9584,700
2018-10-09$72.13$86.1070,800
2018-10-08$73.21$87.3944,900
2018-10-05$72.70$86.7846,900
2018-10-04$73.43$87.6542,800
2018-10-03$74.56$89.0035,500
2018-10-02$74.16$88.5238,800
2018-10-01$74.65$89.1176,900
2018-09-28$76.75$91.61120,200
2018-09-27$76.20$90.9659,000
2018-09-26$76.25$91.0263,100
2018-09-25$76.40$91.2045,700
2018-09-24$76.10$90.8443,100
2018-09-21$76.30$91.08170,900
2018-09-20$76.40$91.20105,600
2018-09-19$75.75$90.4273,000
2018-09-18$76.20$90.9637,000
2018-09-17$75.75$90.4286,100
2018-09-14$76.95$91.8599,300
2018-09-13$76.15$90.9045,400
2018-09-12$76.00$90.7247,100
2018-09-11$76.10$90.8438,900
2018-09-10$76.45$91.2671,300
2018-09-07$76.50$91.3149,900
2018-09-06$76.90$91.7967,800
2018-09-05$76.85$91.7329,800
2018-09-04$76.60$91.4349,200
2018-08-31$77.60$92.6353,900
2018-08-30$76.75$91.6164,700
2018-08-29$77.50$92.5156,700
2018-08-28$77.05$91.9742,500
2018-08-27$78.45$93.6462,100
2018-08-24$77.80$92.8799,800
2018-08-23$75.85$90.5453,200
2018-08-22$77.10$92.0395,500
2018-08-21$77.60$92.63106,300
2018-08-20$77.15$92.0965,400
2018-08-17$75.95$90.66114,300
2018-08-16$75.80$90.48110,300
2018-08-15$74.15$88.5181,500
2018-08-14$74.80$89.29102,300
2018-08-13$74.20$88.57127,100
2018-08-10$74.90$89.4084,800
2018-08-09$75.05$89.58176,300
2018-08-08$75.85$90.54363,600
2018-08-07$79.55$94.9661,800
2018-08-06$78.45$93.6472,400
2018-08-03$78.10$93.2249,000
2018-08-02$78.90$94.1838,800
2018-08-01$78.75$94.0052,700
2018-07-31$80.95$96.63289,600
2018-07-30$78.40$93.58117,100
2018-07-27$79.35$94.7258,400
2018-07-26$81.70$97.5269,400
2018-07-25$79.40$94.7898,700
2018-07-24$79.05$94.36104,100
2018-07-23$79.75$95.1969,400
2018-07-20$81.55$97.3446,800
2018-07-19$82.50$98.4882,700
2018-07-18$82.50$98.4854,100
2018-07-17$82.70$98.7250,300
2018-07-16$81.50$97.2880,200
2018-07-13$82.00$97.88126,200
2018-07-12$81.25$96.9847,000
2018-07-11$80.85$96.51100,200
2018-07-10$81.40$97.1683,000
2018-07-09$81.55$97.3473,500
2018-07-06$79.75$95.1992,600
2018-07-05$78.00$93.1189,400
2018-07-03$77.55$92.5731,400
2018-07-02$77.45$92.4561,500
2018-06-29$76.55$91.3796,500
2018-06-28$76.85$91.7375,000
2018-06-27$77.53$92.54144,600
2018-06-26$78.85$94.1294,400
2018-06-25$78.00$93.11154,300
2018-06-22$79.85$95.31179,600
2018-06-21$79.00$94.3075,100
2018-06-20$80.05$95.5546,200
2018-06-19$79.85$95.3188,600
2018-06-18$80.00$95.49116,700
2018-06-15$79.55$94.96163,300
2018-06-14$79.65$95.0764,200
2018-06-13$79.50$94.9089,200
2018-06-12$79.75$95.1991,100
2018-06-11$79.80$95.2558,100
2018-06-08$79.65$95.0775,200
2018-06-07$79.93$95.4184,700
2018-06-06$79.95$95.4380,300
2018-06-05$78.85$94.1298,200
2018-06-04$78.30$93.46130,200
2018-06-01$77.35$92.33112,100
2018-05-31$76.70$91.55152,200
2018-05-30$76.95$91.85115,300
2018-05-29$75.80$90.48117,100
2018-05-25$74.95$89.4671,800
2018-05-24$75.40$90.0051,100
2018-05-23$76.10$90.8479,900
2018-05-22$76.25$91.0268,200
2018-05-21$76.80$91.67106,600
2018-05-18$75.75$90.42119,000
2018-05-17$75.60$89.72121,900
2018-05-16$74.95$88.94118,800
2018-05-15$73.70$87.46169,900
2018-05-14$73.25$86.93148,000
2018-05-11$75.25$89.30147,000
2018-05-10$74.60$88.53126,400
2018-05-09$74.80$88.77168,100
2018-05-08$73.25$86.93129,600
2018-05-07$72.75$86.33121,300
2018-05-04$72.70$86.2790,800
2018-05-03$71.95$85.3899,100
2018-05-02$72.60$86.1682,600
2018-05-01$72.85$86.4582,700
2018-04-30$72.70$86.27117,500
2018-04-27$74.30$88.1770,100
2018-04-26$74.85$88.83117,600
2018-04-25$73.60$87.34165,000
2018-04-24$74.95$88.94168,400
2018-04-23$73.60$87.34103,200
2018-04-20$73.75$87.52144,700
2018-04-19$72.75$86.3389,600
2018-04-18$73.35$87.0570,700
2018-04-17$72.70$86.27152,500
2018-04-16$72.75$86.33281,800
2018-04-13$70.70$83.9059,500
2018-04-12$70.20$83.3156,400
2018-04-11$69.80$82.8354,200
2018-04-10$69.90$82.9591,800
2018-04-09$68.00$80.7077,100
2018-04-06$67.90$80.5855,000
2018-04-05$69.40$82.3699,000
2018-04-04$67.75$80.40172,800
2018-04-03$67.95$80.6474,300
2018-04-02$66.70$79.1592,300
2018-03-29$68.60$81.4195,600
2018-03-28$68.25$80.99130,800
2018-03-27$68.35$81.11130,200
2018-03-26$70.55$83.72130,400
2018-03-23$69.00$81.88158,100
2018-03-22$69.50$82.48196,000
2018-03-21$71.90$85.32134,500
2018-03-20$70.20$83.31162,700
2018-03-19$70.30$83.43108,900
2018-03-16$70.60$83.78336,900
2018-03-15$69.50$82.48203,600
2018-03-14$70.30$83.43268,900
2018-03-13$70.45$83.60142,600
2018-03-12$70.55$83.72168,800
2018-03-09$69.55$82.54129,900
2018-03-08$68.70$81.53166,500
2018-03-07$68.15$80.87118,700
2018-03-06$68.15$80.87139,300
2018-03-05$66.50$78.92218,400
2018-03-02$64.10$76.0799,100
2018-03-01$64.70$76.78101,000
2018-02-28$64.95$77.08123,400
2018-02-27$68.75$81.59185,100
2018-02-26$68.35$81.11111,300
2018-02-23$68.75$81.5995,700
2018-02-22$68.25$80.99149,400
2018-02-21$67.40$79.98169,800
2018-02-20$65.90$78.20106,400
2018-02-16$68.20$80.93117,900
2018-02-15$68.35$81.11214,000
2018-02-14$67.03$79.55203,200
2018-02-13$67.05$79.5768,900
2018-02-12$66.50$78.9296,200
2018-02-09$65.20$77.37182,900
2018-02-08$63.60$75.47105,800
2018-02-07$66.15$78.5088,300
2018-02-06$65.95$78.26166,000
2018-02-05$66.10$78.4497,600
2018-02-02$69.45$82.42137,200
2018-02-01$70.90$84.14121,500
2018-01-31$71.80$85.2156,100
2018-01-30$72.80$86.3961,600
2018-01-29$73.15$86.81167,800
2018-01-26$73.55$87.2880,000
2018-01-25$73.85$87.64130,100
2018-01-24$72.55$86.1045,100
2018-01-23$72.60$86.1636,500
2018-01-22$72.70$86.2735,100
2018-01-19$73.10$86.7585,600
2018-01-18$71.55$84.9158,800
2018-01-17$72.65$86.21102,500
2018-01-16$72.30$85.8060,000
2018-01-12$73.20$86.8761,100
2018-01-11$73.15$86.8151,400
2018-01-10$71.20$84.4948,300
2018-01-09$71.25$84.5584,700
2018-01-08$71.80$85.2164,200
2018-01-05$71.25$84.5577,600
2018-01-04$70.70$83.90105,900
2018-01-03$70.75$83.9694,700
2018-01-02$71.20$84.4972,500