Innospec Inc. (IOSP) NASDAQ

Currency In USD

IOSP Historical Return

If you invested $1000 in Innospec Inc. (IOSP) 10 years ago, it would be worth $1,932.74 as of June 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $938.76, while $1000 invested 1 year ago would be worth $998.06. This corresponds to total returns of 93.27%, -6.12%, -0.19%, respectively, with annualized returns of 6.81%, -1.26%, -0.19%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

IOSP Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
June 22, 2026	82.42	82.47	82.47	83.22	82.07	140,558
June 18, 2026	83.7	82.73	82.73	83.84	82.28	323,429
June 17, 2026	83.33	83.11	83.11	84.84	82.86	173,525
June 16, 2026	85.89	83.74	83.74	86.24	83.33	177,262
June 15, 2026	86.7	85.11	85.11	87.82	84.92	234,876
June 12, 2026	86.22	86.59	86.59	87.35	86.01	205,076
June 11, 2026	83.72	85.86	85.86	85.94	83.08	183,408
June 10, 2026	83.23	83.35	83.35	83.99	82.95	233,797
June 09, 2026	82.04	82.83	82.83	83.32	81.89	196,376
June 08, 2026	80.85	81.38	81.38	81.89	80.77	101,814
June 05, 2026	80.6	80.68	80.68	82.09	80.07	120,341
June 04, 2026	81.08	80.65	80.65	81.5	80.13	170,791
June 03, 2026	81.47	80.6	80.6	82.63	80.53	134,479
June 02, 2026	81.62	81.65	81.65	82.79	80.35	118,789
June 01, 2026	82.1	81.93	81.93	82.14	80.99	155,547
May 29, 2026	82	82.94	82.94	83.32	80.73	274,566
May 28, 2026	81.8	82.29	82.29	82.32	81.2	113,659
May 27, 2026	81.96	82.29	82.29	82.62	81.7	150,799
May 26, 2026	79.71	81.96	81.96	82.09	79.71	147,234
May 22, 2026	78.91	79.58	79.58	79.76	78.47	190,786
May 21, 2026	77.9	78.73	78.73	78.92	76.8	187,797
May 20, 2026	76.87	78.66	78.66	78.78	76.16	231,136
May 19, 2026	78	76.87	76.87	78.13	76.52	163,298
May 18, 2026	78.25	79.05	79.05	79.68	78.15	167,320
May 15, 2026	79.5	78.15	78.15	79.5	77.69	295,356
May 14, 2026	80.33	80	80	80.9	79.59	232,275
May 13, 2026	80.47	79.69	79.69	80.74	78.79	366,845
May 12, 2026	80.95	80.44	80.44	81.35	78.98	214,637
May 11, 2026	80.55	80.82	80.82	82.61	80.15	235,242
May 08, 2026	78.82	80.55	80.55	81	77.94	658,982
May 07, 2026	77.91	76.64	76.64	79.03	76.64	196,344
May 06, 2026	79.36	77.67	77.67	79.36	77.47	245,627
May 05, 2026	77.26	78.19	78.19	79.19	77.26	147,167
May 04, 2026	76.49	76.48	76.48	77.2	75.13	155,299
May 01, 2026	76.94	76.83	76.83	77.36	75.61	230,660
April 30, 2026	75.09	76.26	76.26	76.62	74.64	193,650
April 29, 2026	76.11	75.61	75.61	76.53	75.45	174,119
April 28, 2026	77.81	76.64	76.64	78.02	76.45	115,738
April 27, 2026	76.82	77.68	77.68	78.02	76.39	203,403
April 24, 2026	76.46	77.15	77.15	77.29	75.81	115,545
April 23, 2026	75.25	76.66	76.66	76.82	75	143,544
April 22, 2026	75.75	74.97	74.97	76.12	74.86	150,275
April 21, 2026	75.35	75.47	75.47	75.78	74.85	117,160
April 20, 2026	75.95	75.48	75.48	76.43	75.11	124,693
April 17, 2026	75.47	76.19	76.19	77.9	75.47	173,959
April 16, 2026	74.48	75.09	75.09	76.22	74.48	155,005
April 15, 2026	74.83	74.66	74.66	75.78	71.19	230,019
April 14, 2026	76.57	75.22	75.22	76.62	75.1	196,537
April 13, 2026	75.6	76.57	76.57	76.57	74.29	203,340
April 10, 2026	75.68	75.66	75.66	76.17	75.02	128,449
April 09, 2026	75.05	75.83	75.83	76.86	74.54	255,275
April 08, 2026	74.04	75.76	75.76	75.93	74.03	284,334
April 07, 2026	71.96	72.88	72.88	73.01	71.51	213,421
April 06, 2026	73.77	72.24	72.24	73.83	71.94	164,709
April 02, 2026	73.2	73.79	73.79	74.19	72.66	263,051
April 01, 2026	73.22	73.6	73.6	74.29	73.06	213,897
March 31, 2026	73.29	73.02	73.02	74.37	72.07	251,125
March 30, 2026	72.74	73.19	73.19	74.13	72.35	248,992
March 27, 2026	72	72.2	72.2	72.86	70.93	250,972
March 26, 2026	70.3	72.37	72.37	72.48	70.3	215,639