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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$90.34$112.6990,400——
2021-12-30$90.54$112.9364,900——
2021-12-29$91.93$114.6749,000——
2021-12-28$91.89$114.6281,900——
2021-12-27$91.33$113.9277,900——
2021-12-23$89.52$111.6674,500——
2021-12-22$88.75$110.7056,900——
2021-12-21$88.74$110.6988,400——
2021-12-20$86.05$107.33252,400——
2021-12-17$90.75$113.20673,000——
2021-12-16$91.32$113.91433,200——
2021-12-15$91.30$113.88198,000——
2021-12-14$89.10$111.14196,000——
2021-12-13$88.39$110.25152,400——
2021-12-10$88.20$110.0279,000——
2021-12-09$87.22$108.7974,000——
2021-12-08$87.65$109.3399,200——
2021-12-07$86.37$107.73131,000——
2021-12-06$87.21$108.78127,100——
2021-12-03$83.21$103.7972,900——
2021-12-02$84.03$104.8174,000——
2021-12-01$81.95$102.22129,700——
2021-11-30$81.20$101.28125,000——
2021-11-29$83.50$104.15101,100——
2021-11-26$83.19$103.7761,500——
2021-11-24$87.33$108.93138,500——
2021-11-23$88.74$110.69166,800——
2021-11-22$88.61$110.53265,500——
2021-11-19$87.33$108.93158,200——
2021-11-18$87.30$108.89230,200——
2021-11-17$89.49$111.62184,200——
2021-11-16$91.31$113.9077,500——
2021-11-15$92.02$114.7885,400——
2021-11-12$93.78$116.2469,100——
2021-11-11$93.24$115.57101,400——
2021-11-10$92.94$115.20119,700——
2021-11-09$93.63$116.05177,200——
2021-11-08$94.12$116.6649,800——
2021-11-05$93.92$116.4173,700——
2021-11-04$90.40$112.05148,800——
2021-11-03$92.88$115.12149,800——
2021-11-02$93.40$115.77154,900——
2021-11-01$90.90$112.67126,600——
2021-10-29$90.61$112.31111,100——
2021-10-28$89.54$110.9864,500——
2021-10-27$86.78$107.56113,600——
2021-10-26$87.48$108.4383,500——
2021-10-25$88.11$109.21106,900——
2021-10-22$88.47$109.66196,300——
2021-10-21$87.36$108.28124,300——
2021-10-20$86.46$107.1788,300——
2021-10-19$86.35$107.0369,200——
2021-10-18$86.92$107.74123,000——
2021-10-15$85.70$106.22112,000——
2021-10-14$86.12$106.75100,200——
2021-10-13$84.80$105.1153,100——
2021-10-12$84.91$105.2552,000——
2021-10-11$84.46$104.6977,700——
2021-10-08$85.16$105.5648,300——
2021-10-07$85.73$106.26140,100——
2021-10-06$85.13$105.5282,200——
2021-10-05$85.95$106.5399,200——
2021-10-04$85.21$105.6281,300——
2021-10-01$85.89$106.46151,100——
2021-09-30$84.22$104.39137,900——
2021-09-29$85.59$106.0972,200——
2021-09-28$85.76$106.30101,700——
2021-09-27$86.99$107.8271,500——
2021-09-24$84.71$105.0075,100——
2021-09-23$84.84$105.1663,400——
2021-09-22$83.66$103.70115,600——
2021-09-21$82.36$102.08149,600——
2021-09-20$82.60$102.38112,900——
2021-09-17$84.70$104.99313,000——
2021-09-16$86.16$106.8073,000——
2021-09-15$86.80$107.5981,000——
2021-09-14$86.64$107.3968,100——
2021-09-13$89.30$110.6961,300——
2021-09-10$89.30$110.6980,600——
2021-09-09$90.97$112.7672,400——
2021-09-08$91.12$112.9467,700——
2021-09-07$90.86$112.6252,200——
2021-09-03$91.31$113.1868,600——
2021-09-02$92.31$114.4250,700——
2021-09-01$92.67$114.8661,300——
2021-08-31$93.60$116.0297,400——
2021-08-30$93.56$115.9750,300——
2021-08-27$95.69$118.61128,100——
2021-08-26$91.51$113.4376,500——
2021-08-25$92.59$114.7783,000——
2021-08-24$92.97$115.2481,300——
2021-08-23$91.67$113.6257,200——
2021-08-20$90.48$112.1577,500——
2021-08-19$90.30$111.9398,700——
2021-08-18$91.73$113.7069,900——
2021-08-17$92.59$114.7786,700——
2021-08-16$93.29$115.6359,700——
2021-08-13$94.08$116.6172,600——
2021-08-12$94.51$117.14162,000——
2021-08-11$94.85$117.57118,400——
2021-08-10$93.66$116.09125,200——
2021-08-09$91.21$113.0586,000——
2021-08-06$89.32$110.71136,300——
2021-08-05$86.49$107.20115,400——
2021-08-04$86.24$106.89228,000——
2021-08-03$87.91$108.96250,500——
2021-08-02$88.42$109.6084,600——
2021-07-30$88.45$109.63155,400——
2021-07-29$88.91$110.20215,100——
2021-07-28$87.57$108.54117,600——
2021-07-27$86.91$107.7276,000——
2021-07-26$86.70$107.46183,800——
2021-07-23$86.48$107.1954,100——
2021-07-22$86.12$106.7560,900——
2021-07-21$87.09$107.9574,900——
2021-07-20$86.74$107.51125,600——
2021-07-19$85.45$105.9274,200——
2021-07-16$88.12$109.2270,100——
2021-07-15$90.27$111.8980,000——
2021-07-14$90.02$111.5883,700——
2021-07-13$89.52$110.96106,600——
2021-07-12$91.09$112.9179,900——
2021-07-09$90.39$112.0462,900——
2021-07-08$88.88$110.17108,400——
2021-07-07$88.92$110.22153,200——
2021-07-06$88.57$109.78128,100——
2021-07-02$90.49$112.1692,400——
2021-07-01$90.91$112.68105,900——
2021-06-30$90.61$112.31147,800——
2021-06-29$90.00$111.5558,400——
2021-06-28$91.18$113.02106,200——
2021-06-25$94.00$116.51679,500——
2021-06-24$93.96$116.46102,800——
2021-06-23$93.86$116.3475,900——
2021-06-22$93.58$115.9960,000——
2021-06-21$93.28$115.6273,200——
2021-06-18$91.55$113.48146,400——
2021-06-17$93.73$116.1888,900——
2021-06-16$96.34$119.4166,400——
2021-06-15$97.03$120.2775,900——
2021-06-14$98.20$121.72123,200——
2021-06-11$98.51$122.1084,900——
2021-06-10$98.18$121.6971,500——
2021-06-09$100.02$123.9774,200——
2021-06-08$102.31$126.8196,100——
2021-06-07$101.44$125.7391,300——
2021-06-04$101.88$126.2869,000——
2021-06-03$101.78$126.16104,200——
2021-06-02$101.28$125.5458,500——
2021-06-01$102.96$127.62100,600——
2021-05-28$101.11$125.3352,400——
2021-05-27$101.69$126.04139,000——
2021-05-26$101.88$126.2899,300——
2021-05-25$99.58$123.4389,900——
2021-05-24$100.64$124.7487,200——
2021-05-21$100.23$124.23180,000——
2021-05-20$99.83$123.7470,100——
2021-05-19$98.64$122.2659,100——
2021-05-18$99.72$123.6098,500——
2021-05-17$100.26$124.27112,900——
2021-05-14$101.00$125.1999,700——
2021-05-13$101.60$125.2379,800——
2021-05-12$98.23$121.0757,800——
2021-05-11$101.42$125.00121,800——
2021-05-10$100.46$123.82123,600——
2021-05-07$102.54$126.3877,700——
2021-05-06$102.77$126.6787,100——
2021-05-05$99.97$123.2271,800——
2021-05-04$98.69$121.6497,000——
2021-05-03$98.36$121.23137,200——
2021-04-30$97.41$120.06146,900——
2021-04-29$99.10$122.1590,300——
2021-04-28$96.76$119.2669,000——
2021-04-27$96.62$119.09150,200——
2021-04-26$96.45$118.8863,500——
2021-04-23$97.70$120.42127,200——
2021-04-22$95.42$117.61135,700——
2021-04-21$97.36$120.00126,300——
2021-04-20$95.92$118.23127,200——
2021-04-19$99.20$122.27124,900——
2021-04-16$102.82$126.7380,100——
2021-04-15$103.18$127.1751,900——
2021-04-14$103.83$127.9770,500——
2021-04-13$101.50$125.1099,500——
2021-04-12$103.01$126.9652,200——
2021-04-09$102.53$126.3757,700——
2021-04-08$102.03$125.7656,800——
2021-04-07$103.76$127.8992,600——
2021-04-06$105.95$130.5960,500——
2021-04-05$105.32$129.8158,100——
2021-04-01$105.33$129.82129,700——
2021-03-31$102.69$126.57210,600——
2021-03-30$102.41$126.2296,200——
2021-03-29$102.00$125.7287,800——
2021-03-26$103.00$126.9562,900——
2021-03-25$100.41$123.7663,100——
2021-03-24$98.98$122.0089,000——
2021-03-23$97.98$120.7699,000——
2021-03-22$101.01$124.5038,700——
2021-03-19$104.36$128.63282,400——
2021-03-18$104.92$129.32108,500——
2021-03-17$104.02$128.2162,800——
2021-03-16$102.32$126.1152,200——
2021-03-15$103.77$127.9080,800——
2021-03-12$105.42$129.9358,200——
2021-03-11$104.48$128.7861,900——
2021-03-10$105.04$129.4761,800——
2021-03-09$101.92$125.6267,800——
2021-03-08$102.78$126.6877,600——
2021-03-05$101.41$124.99120,400——
2021-03-04$99.26$122.3476,600——
2021-03-03$100.50$123.8792,500——
2021-03-02$100.20$123.5054,000——
2021-03-01$101.50$125.1097,900——
2021-02-26$100.45$123.81106,000——
2021-02-25$101.95$125.6678,300——
2021-02-24$104.77$129.13117,900——
2021-02-23$101.36$124.9393,000——
2021-02-22$101.42$125.0097,000——
2021-02-19$99.85$123.0777,400——
2021-02-18$97.00$119.56102,600——
2021-02-17$97.71$120.43107,300——
2021-02-16$97.40$120.05100,900——
2021-02-12$100.08$123.3560,700——
2021-02-11$99.95$123.1969,900——
2021-02-10$98.92$121.9265,800——
2021-02-09$99.93$123.17106,700——
2021-02-08$99.31$122.4085,800——
2021-02-05$94.59$116.5974,800——
2021-02-04$94.78$116.8296,900——
2021-02-03$92.85$114.4487,200——
2021-02-02$91.86$113.2275,800——
2021-02-01$90.37$111.38107,900——
2021-01-29$87.79$108.2099,200——
2021-01-28$91.49$112.77138,400——
2021-01-27$91.24$112.46131,500——
2021-01-26$93.67$115.4570,600——
2021-01-25$94.92$116.9963,200——
2021-01-22$96.61$119.08127,700——
2021-01-21$95.51$117.7272,400——
2021-01-20$97.45$120.1174,200——
2021-01-19$97.50$120.1776,500——
2021-01-15$97.27$119.8998,100——
2021-01-14$99.82$123.0387,000——
2021-01-13$98.69$121.64106,900——
2021-01-12$102.45$126.2777,300——
2021-01-11$98.11$120.9290,300——
2021-01-08$97.85$120.60288,800——
2021-01-07$100.56$123.94103,000——
2021-01-06$98.98$122.00189,100——
2021-01-05$92.34$113.8191,700——
2021-01-04$89.56$110.39120,700——