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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$90.73$111.8374,800——
2020-12-30$90.27$111.2674,500——
2020-12-29$88.65$109.2663,200——
2020-12-28$90.43$111.4676,300——
2020-12-24$89.54$110.3629,500——
2020-12-23$88.70$109.3379,800——
2020-12-22$86.92$107.1360,800——
2020-12-21$86.61$106.7573,400——
2020-12-18$88.55$109.14697,500——
2020-12-17$90.60$111.67130,200——
2020-12-16$88.20$108.71147,200——
2020-12-15$88.43$108.99170,400——
2020-12-14$85.13$104.93135,500——
2020-12-11$85.32$105.1693,000——
2020-12-10$85.74$105.6898,200——
2020-12-09$87.54$107.9081,600——
2020-12-08$86.78$106.96169,300——
2020-12-07$86.05$106.0696,100——
2020-12-04$87.12$107.3861,300——
2020-12-03$84.31$103.9277,600——
2020-12-02$84.25$103.84100,800——
2020-12-01$84.20$103.78102,100——
2020-11-30$82.29$101.43165,200——
2020-11-27$85.43$105.30143,500——
2020-11-25$87.46$107.80180,800——
2020-11-24$88.02$108.49144,300——
2020-11-23$83.24$102.60112,900——
2020-11-20$80.76$99.54100,300——
2020-11-19$80.73$99.5086,500——
2020-11-18$80.77$99.55127,100——
2020-11-17$82.87$102.14122,700——
2020-11-16$83.02$102.33128,400——
2020-11-13$79.81$97.73113,200——
2020-11-12$76.64$93.85144,000——
2020-11-11$78.17$95.72117,400——
2020-11-10$79.61$97.48164,900——
2020-11-09$77.13$94.45169,800——
2020-11-06$68.75$84.1992,800——
2020-11-05$70.31$86.10194,700——
2020-11-04$70.00$85.72172,300——
2020-11-03$68.63$84.0491,800——
2020-11-02$68.35$83.70110,800——
2020-10-30$66.14$80.99108,900——
2020-10-29$65.25$79.90112,100——
2020-10-28$62.76$76.85134,200——
2020-10-27$65.21$79.8591,900——
2020-10-26$67.05$82.1076,300——
2020-10-23$68.53$83.9257,400——
2020-10-22$68.50$83.8889,000——
2020-10-21$68.04$83.3279,700——
2020-10-20$67.92$83.17146,100——
2020-10-19$67.72$82.92105,400——
2020-10-16$68.78$84.2299,600——
2020-10-15$68.81$84.2678,500——
2020-10-14$67.70$82.9065,100——
2020-10-13$67.20$82.29104,400——
2020-10-12$68.46$83.8391,500——
2020-10-09$67.07$82.1384,300——
2020-10-08$66.78$81.77106,200——
2020-10-07$65.78$80.55166,300——
2020-10-06$65.86$80.65195,500——
2020-10-05$65.59$80.32137,600——
2020-10-02$63.56$77.83142,800——
2020-10-01$62.97$77.11106,000——
2020-09-30$63.32$77.54136,300——
2020-09-29$62.99$77.1397,700——
2020-09-28$63.95$78.31191,400——
2020-09-25$63.20$77.3999,100——
2020-09-24$63.89$78.23112,500——
2020-09-23$63.58$77.85178,400——
2020-09-22$65.24$79.89155,400——
2020-09-21$63.54$77.81145,800——
2020-09-18$66.51$81.44430,100——
2020-09-17$67.05$82.10116,300——
2020-09-16$67.59$82.76138,100——
2020-09-15$67.58$82.75145,800——
2020-09-14$67.70$82.90113,500——
2020-09-11$67.12$82.19121,000——
2020-09-10$68.47$83.84144,100——
2020-09-09$70.81$86.71104,600——
2020-09-08$71.21$87.20132,400——
2020-09-04$74.04$90.6680,800——
2020-09-03$73.67$90.2173,000——
2020-09-02$76.13$93.2265,200——
2020-09-01$76.54$93.7275,700——
2020-08-31$74.69$91.46115,700——
2020-08-28$76.44$93.6057,300——
2020-08-27$75.88$92.9256,100——
2020-08-26$75.15$92.0252,100——
2020-08-25$76.27$93.3958,100——
2020-08-24$76.95$94.2369,400——
2020-08-21$74.99$91.8356,700——
2020-08-20$75.63$92.6182,900——
2020-08-19$75.87$92.9069,200——
2020-08-18$76.25$93.37104,600——
2020-08-17$77.59$95.0175,000——
2020-08-14$78.58$96.2290,300——
2020-08-13$79.42$97.2580,700——
2020-08-12$82.87$101.48100,700——
2020-08-11$82.75$101.33166,600——
2020-08-10$80.50$98.57123,700——
2020-08-07$78.99$96.7260,700——
2020-08-06$76.87$94.1390,400——
2020-08-05$76.61$93.81270,900——
2020-08-04$77.94$95.44125,200——
2020-08-03$76.80$94.0463,600——
2020-07-31$75.17$92.05109,600——
2020-07-30$75.43$92.3660,200——
2020-07-29$78.66$96.3278,200——
2020-07-28$77.37$94.7433,200——
2020-07-27$79.40$97.2356,400——
2020-07-24$78.06$95.5943,600——
2020-07-23$79.57$97.4375,600——
2020-07-22$79.07$96.8264,800——
2020-07-21$79.17$96.9472,900——
2020-07-20$77.49$94.8944,000——
2020-07-17$79.40$97.2364,200——
2020-07-16$79.45$97.2943,500——
2020-07-15$80.32$98.35114,300——
2020-07-14$77.25$94.5987,900——
2020-07-13$75.67$92.66105,300——
2020-07-10$75.00$91.8461,800——
2020-07-09$72.46$88.7377,800——
2020-07-08$75.00$91.8484,100——
2020-07-07$75.76$92.77108,600——
2020-07-06$77.06$94.3676,600——
2020-07-02$78.36$95.9578,500——
2020-07-01$76.85$94.10166,700——
2020-06-30$77.25$94.59123,100——
2020-06-29$75.48$92.43132,200——
2020-06-26$70.27$86.05352,200——
2020-06-25$73.14$89.5699,000——
2020-06-24$72.78$89.12105,500——
2020-06-23$76.00$93.06163,300——
2020-06-22$74.17$90.82111,100——
2020-06-19$73.76$90.32222,000——
2020-06-18$75.35$92.2774,700——
2020-06-17$76.20$93.31108,200——
2020-06-16$77.72$95.17119,100——
2020-06-15$76.70$93.9270,300——
2020-06-12$75.42$92.35115,500——
2020-06-11$74.08$90.71170,800——
2020-06-10$80.85$99.0059,300——
2020-06-09$83.03$101.6785,900——
2020-06-08$84.46$103.42104,500——
2020-06-05$83.92$102.76135,900——
2020-06-04$81.44$99.72102,000——
2020-06-03$79.59$97.46154,500——
2020-06-02$77.77$95.2386,000——
2020-06-01$77.50$94.90110,900——
2020-05-29$77.09$94.40163,600——
2020-05-28$78.29$95.87151,200——
2020-05-27$80.46$98.52127,300——
2020-05-26$77.34$94.70126,400——
2020-05-22$74.00$90.6174,100——
2020-05-21$73.54$90.0590,400——
2020-05-20$74.67$91.43207,100——
2020-05-19$70.74$86.62132,100——
2020-05-18$72.10$88.29127,900——
2020-05-15$66.65$81.61290,800——
2020-05-14$65.21$79.21111,900——
2020-05-13$66.85$81.21111,400——
2020-05-12$69.53$84.46114,500——
2020-05-11$71.57$86.94104,200——
2020-05-08$73.50$89.2893,400——
2020-05-07$69.66$84.6293,300——
2020-05-06$71.51$86.87137,900——
2020-05-05$70.36$85.47129,600——
2020-05-04$69.89$84.90120,000——
2020-05-01$71.25$86.55135,800——
2020-04-30$72.52$88.09102,000——
2020-04-29$77.50$94.14113,100——
2020-04-28$74.01$89.9088,100——
2020-04-27$71.98$87.4488,700——
2020-04-24$69.12$83.9686,300——
2020-04-23$68.37$83.0575,700——
2020-04-22$66.76$81.1080,900——
2020-04-21$66.69$81.0174,500——
2020-04-20$67.74$82.2992,400——
2020-04-17$71.00$86.25142,100——
2020-04-16$68.62$83.36130,000——
2020-04-15$68.57$83.30100,900——
2020-04-14$73.04$88.7361,700——
2020-04-13$72.57$88.1557,700——
2020-04-09$73.78$89.62113,300——
2020-04-08$70.13$85.1994,500——
2020-04-07$68.81$83.5990,700——
2020-04-06$69.58$84.52108,000——
2020-04-03$64.14$77.9196,400——
2020-04-02$65.81$79.9457,100——
2020-04-01$64.26$78.0681,300——
2020-03-31$69.49$84.41144,500——
2020-03-30$68.89$83.68189,800——
2020-03-27$66.56$80.85150,000——
2020-03-26$73.35$89.10150,600——
2020-03-25$66.88$81.24149,900——
2020-03-24$68.81$83.59125,900——
2020-03-23$64.05$77.80170,900——
2020-03-20$61.37$74.55225,500——
2020-03-19$65.10$79.08183,100——
2020-03-18$64.01$77.76175,400——
2020-03-17$73.73$89.56197,900——
2020-03-16$62.03$75.35145,500——
2020-03-13$69.94$84.96157,200——
2020-03-12$65.45$79.51208,100——
2020-03-11$72.47$88.03159,100——
2020-03-10$77.24$93.83168,100——
2020-03-09$69.64$84.60333,900——
2020-03-06$84.02$102.06133,900——
2020-03-05$83.09$100.93169,400——
2020-03-04$89.11$108.25130,000——
2020-03-03$87.63$106.45172,800——
2020-03-02$89.00$108.11110,800——
2020-02-28$86.54$105.12276,300——
2020-02-27$84.21$102.29240,900——
2020-02-26$87.86$106.73126,200——
2020-02-25$87.78$106.63132,300——
2020-02-24$90.96$110.49218,600——
2020-02-21$95.70$116.25344,000——
2020-02-20$102.51$124.52115,600——
2020-02-19$104.25$126.64175,800——
2020-02-18$103.55$125.79129,700——
2020-02-14$104.44$126.87131,200——
2020-02-13$104.74$127.2369,900——
2020-02-12$104.68$127.1661,200——
2020-02-11$103.98$126.3163,200——
2020-02-10$103.38$125.5880,600——
2020-02-07$102.63$124.67148,700——
2020-02-06$103.83$126.1381,900——
2020-02-05$106.43$129.2996,700——
2020-02-04$105.00$127.55119,300——
2020-02-03$102.20$124.15103,000——
2020-01-31$100.73$122.3696,900——
2020-01-30$104.55$127.00101,500——
2020-01-29$104.04$126.38114,400——
2020-01-28$106.03$128.8083,400——
2020-01-27$105.19$127.7877,800——
2020-01-24$106.45$129.3166,500——
2020-01-23$107.16$130.17112,400——
2020-01-22$106.79$129.7278,700——
2020-01-21$106.16$128.96117,700——
2020-01-17$106.08$128.86103,400——
2020-01-16$104.97$127.51136,800——
2020-01-15$104.83$127.3475,300——
2020-01-14$104.08$126.43119,500——
2020-01-13$102.96$125.07116,800——
2020-01-10$101.83$123.7067,700——
2020-01-09$102.04$123.95138,900——
2020-01-08$102.26$124.22109,500——
2020-01-07$101.78$123.6482,800——
2020-01-06$102.42$124.41143,600——
2020-01-03$102.94$125.0596,200——
2020-01-02$103.64$125.90122,500——