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 — 2019

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2019-12-31$103.44$125.6571,500——
2019-12-30$103.29$125.4770,700——
2019-12-27$103.45$125.6787,300——
2019-12-26$103.91$126.2274,300——
2019-12-24$103.57$125.8152,900——
2019-12-23$103.09$125.2372,800——
2019-12-20$102.40$124.39264,300——
2019-12-19$101.23$122.9760,100——
2019-12-18$100.95$122.6362,700——
2019-12-17$100.39$121.9569,600——
2019-12-16$100.46$122.0387,300——
2019-12-13$99.82$121.2678,700——
2019-12-12$100.64$122.2593,000——
2019-12-11$98.78$119.9964,000——
2019-12-10$99.02$120.2854,500——
2019-12-09$99.86$121.3092,200——
2019-12-06$99.26$120.58143,900——
2019-12-05$100.01$121.49124,900——
2019-12-04$98.52$119.68117,600——
2019-12-03$97.53$118.4794,200——
2019-12-02$98.43$119.5798,000——
2019-11-29$98.40$119.5334,200——
2019-11-27$99.00$120.2674,700——
2019-11-26$98.54$119.7068,300——
2019-11-25$97.23$118.11109,000——
2019-11-22$95.02$115.4357,000——
2019-11-21$95.44$115.9484,300——
2019-11-20$95.34$115.81106,800——
2019-11-19$97.34$118.2473,700——
2019-11-18$96.40$117.1062,500——
2019-11-15$95.72$115.6486,400——
2019-11-14$96.56$116.66123,100——
2019-11-13$98.09$118.5177,800——
2019-11-12$99.83$120.61106,300——
2019-11-11$99.83$120.61107,200——
2019-11-08$99.90$120.69148,100——
2019-11-07$100.00$120.81164,300——
2019-11-06$100.31$121.19412,700——
2019-11-05$92.19$111.38132,300——
2019-11-04$91.83$110.9484,900——
2019-11-01$91.95$111.0977,600——
2019-10-31$91.36$110.38109,100——
2019-10-30$91.55$110.6162,900——
2019-10-29$91.69$110.7883,300——
2019-10-28$91.36$110.3870,900——
2019-10-25$90.22$109.0047,700——
2019-10-24$90.48$109.3154,100——
2019-10-23$91.42$110.4562,400——
2019-10-22$92.18$111.3768,200——
2019-10-21$92.81$112.1387,300——
2019-10-18$92.34$111.56115,000——
2019-10-17$93.13$112.51116,600——
2019-10-16$90.80$109.7078,100——
2019-10-15$90.52$109.3678,400——
2019-10-14$89.09$107.6358,500——
2019-10-11$88.18$106.5385,500——
2019-10-10$85.47$103.2669,900——
2019-10-09$86.53$104.5458,000——
2019-10-08$86.84$104.92117,500——
2019-10-07$87.55$105.7787,500——
2019-10-04$87.78$106.0553,300——
2019-10-03$87.34$105.5273,100——
2019-10-02$87.32$105.50100,400——
2019-10-01$87.40$105.59123,600——
2019-09-30$89.14$107.69103,400——
2019-09-27$89.26$107.8497,600——
2019-09-26$88.18$106.53103,400——
2019-09-25$89.15$107.7197,400——
2019-09-24$88.45$106.86117,300——
2019-09-23$90.77$109.66108,600——
2019-09-20$91.41$110.44327,200——
2019-09-19$93.19$112.59110,000——
2019-09-18$94.89$114.6490,900——
2019-09-17$95.01$114.79103,600——
2019-09-16$94.60$114.29118,900——
2019-09-13$95.36$115.21179,800——
2019-09-12$94.48$114.15116,000——
2019-09-11$94.57$114.25208,100——
2019-09-10$90.91$109.83128,700——
2019-09-09$89.11$107.66134,300——
2019-09-06$87.02$105.1375,200——
2019-09-05$87.26$105.42195,800——
2019-09-04$86.53$104.54166,500——
2019-09-03$82.57$99.76170,800——
2019-08-30$83.18$100.4976,300——
2019-08-29$83.10$100.40150,400——
2019-08-28$83.51$100.8985,400——
2019-08-27$82.73$99.9596,500——
2019-08-26$82.74$99.96187,800——
2019-08-23$81.92$98.97175,600——
2019-08-22$83.94$101.41120,200——
2019-08-21$85.18$102.9166,200——
2019-08-20$84.14$101.65165,000——
2019-08-19$85.05$102.75115,400——
2019-08-16$85.00$102.69129,000——
2019-08-15$84.47$102.0584,100——
2019-08-14$84.06$101.56123,200——
2019-08-13$87.29$105.46131,600——
2019-08-12$87.37$105.5685,000——
2019-08-09$88.36$106.75115,300——
2019-08-08$90.50$109.34154,800——
2019-08-07$87.19$105.34276,100——
2019-08-06$87.27$105.44105,100——
2019-08-05$86.47$104.47132,300——
2019-08-02$90.37$109.1885,500——
2019-08-01$92.48$111.7375,100——
2019-07-31$93.38$112.82199,300——
2019-07-30$94.29$113.9285,200——
2019-07-29$92.72$112.0274,600——
2019-07-26$93.85$113.3880,800——
2019-07-25$92.07$111.2382,100——
2019-07-24$93.73$113.2476,100——
2019-07-23$92.06$111.2253,500——
2019-07-22$90.76$109.6556,500——
2019-07-19$91.23$110.2277,900——
2019-07-18$91.81$110.9249,000——
2019-07-17$92.11$111.2884,900——
2019-07-16$92.56$111.8396,100——
2019-07-15$92.16$111.3470,300——
2019-07-12$92.40$111.6369,500——
2019-07-11$91.56$110.62113,100——
2019-07-10$91.56$110.62127,600——
2019-07-09$92.63$111.91124,300——
2019-07-08$94.48$114.15154,900——
2019-07-05$94.22$113.8347,000——
2019-07-03$94.02$113.5938,700——
2019-07-02$92.44$111.68161,000——
2019-07-01$92.65$111.94137,600——
2019-06-28$91.24$110.23974,300——
2019-06-27$88.23$106.60100,100——
2019-06-26$85.34$103.1095,700——
2019-06-25$84.36$101.92107,100——
2019-06-24$83.91$101.38102,000——
2019-06-21$85.28$103.03118,800——
2019-06-20$86.92$105.0180,300——
2019-06-19$86.21$104.15101,200——
2019-06-18$87.34$105.5269,400——
2019-06-17$85.75$103.60106,900——
2019-06-14$85.65$103.48107,100——
2019-06-13$85.61$103.4393,700——
2019-06-12$85.12$102.8485,000——
2019-06-11$84.80$102.4579,000——
2019-06-10$84.67$102.2968,500——
2019-06-07$84.73$102.3791,400——
2019-06-06$83.91$101.38101,900——
2019-06-05$84.65$102.2793,300——
2019-06-04$85.46$103.2575,700——
2019-06-03$82.21$99.3278,600——
2019-05-31$80.71$97.5184,600——
2019-05-30$81.87$98.9173,500——
2019-05-29$82.83$100.0779,500——
2019-05-28$82.53$99.7194,500——
2019-05-24$81.36$98.30165,900——
2019-05-23$79.07$95.5377,400——
2019-05-22$81.80$98.8366,300——
2019-05-21$81.73$98.74121,700——
2019-05-20$80.93$97.7883,700——
2019-05-17$82.61$99.20135,400——
2019-05-16$83.50$100.2798,700——
2019-05-15$82.66$99.26111,200——
2019-05-14$81.85$98.2986,900——
2019-05-13$81.71$98.12108,600——
2019-05-10$85.77$103.0098,700——
2019-05-09$84.95$102.01176,500——
2019-05-08$86.39$103.74159,000——
2019-05-07$84.11$101.00101,200——
2019-05-06$86.07$103.36133,600——
2019-05-03$85.50$102.6765,700——
2019-05-02$82.95$99.6149,400——
2019-05-01$82.23$98.74167,400——
2019-04-30$84.82$101.85115,300——
2019-04-29$83.99$100.8638,800——
2019-04-26$83.52$100.2981,800——
2019-04-25$82.19$98.7065,500——
2019-04-24$84.39$101.3457,100——
2019-04-23$84.76$101.7858,300——
2019-04-22$83.82$100.6539,600——
2019-04-18$84.86$101.9055,400——
2019-04-17$85.59$102.7856,000——
2019-04-16$85.33$102.4767,400——
2019-04-15$84.40$101.3548,300——
2019-04-12$84.90$101.9562,200——
2019-04-11$84.70$101.7160,300——
2019-04-10$85.01$102.08154,000——
2019-04-09$84.54$101.5270,900——
2019-04-08$85.12$102.2251,300——
2019-04-05$84.55$101.53111,900——
2019-04-04$85.34$102.4876,600——
2019-04-03$84.98$102.05126,100——
2019-04-02$84.01$100.8867,900——
2019-04-01$83.75$100.57128,200——
2019-03-29$83.35$100.09140,700——
2019-03-28$83.76$100.5873,200——
2019-03-27$82.91$99.5688,000——
2019-03-26$82.68$99.29127,900——
2019-03-25$81.45$97.81145,200——
2019-03-22$79.91$95.96122,000——
2019-03-21$83.03$99.71165,800——
2019-03-20$81.60$97.99100,200——
2019-03-19$82.13$98.6295,600——
2019-03-18$83.39$100.1471,600——
2019-03-15$82.65$99.25208,300——
2019-03-14$82.76$99.3876,700——
2019-03-13$83.48$100.2570,500——
2019-03-12$83.74$100.56108,700——
2019-03-11$84.58$101.5783,600——
2019-03-08$82.78$99.4144,600——
2019-03-07$83.32$100.0572,800——
2019-03-06$83.99$100.86117,600——
2019-03-05$83.99$100.8692,400——
2019-03-04$83.38$100.13139,900——
2019-03-01$82.76$99.38121,100——
2019-02-28$81.86$98.3092,600——
2019-02-27$82.15$98.6583,600——
2019-02-26$81.28$97.6082,700——
2019-02-25$81.78$98.20101,500——
2019-02-22$81.07$97.35123,100——
2019-02-21$80.99$97.26132,500——
2019-02-20$78.22$93.93146,500——
2019-02-19$75.37$90.5163,200——
2019-02-15$73.94$88.7964,800——
2019-02-14$72.65$87.24102,800——
2019-02-13$73.89$88.7363,000——
2019-02-12$72.76$87.37135,200——
2019-02-11$73.51$88.2751,500——
2019-02-08$72.16$86.6536,400——
2019-02-07$71.80$86.2266,300——
2019-02-06$72.63$87.2276,600——
2019-02-05$71.86$86.2954,600——
2019-02-04$71.33$85.6668,800——
2019-02-01$70.94$85.19108,200——
2019-01-31$70.27$84.3863,000——
2019-01-30$69.49$83.4590,700——
2019-01-29$68.74$82.5547,400——
2019-01-28$68.23$81.9381,000——
2019-01-25$68.72$82.5250,300——
2019-01-24$67.50$81.0684,100——
2019-01-23$66.18$79.47103,200——
2019-01-22$66.31$79.6388,600——
2019-01-18$67.14$80.62116,900——
2019-01-17$65.98$79.23101,400——
2019-01-16$64.26$77.17191,000——
2019-01-15$62.34$74.8660,400——
2019-01-14$62.19$74.6859,600——
2019-01-11$62.36$74.8865,300——
2019-01-10$62.90$75.53107,600——
2019-01-09$62.67$75.2663,600——
2019-01-08$62.18$74.67242,500——
2019-01-07$62.30$74.8159,700——
2019-01-04$62.76$75.3658,200——
2019-01-03$60.21$72.3096,300——
2019-01-02$61.77$74.1886,800——