IOSP · Innospec Inc.
$93.85
-0.07 (-0.07%)
At close · Aug 14
View the 10-K filed Feb 18, 2026
Customer concentration
— top customer 13.6% of revenue
One customer — 13.6% of revenue (2023)
“In 2023, the Company had a significant customer in the Oilfield Services segment which accounted for $265.2 million and 13.6% of the group's net sales.”
Market Cap
$2.31B
Shares
24.63M
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-07-06 | 177,867 | 67,997 | 245,864 | 36.2% |
| 2026-06-29 | 158,673 | 81,234 | 239,907 | 33.8% |
| 2026-06-22 | 276,426 | 157,329 | 433,755 | 31.1% |
| 2026-06-15 | 164,530 | 63,576 | 228,106 | 25.1% |
| 2026-06-08 | 271,978 | 63,016 | 334,994 | 36.2% |
| 2026-06-01 | 193,471 | 296,654 | 490,125 | 52.4% |
| 2026-05-25 | 174,150 | 106,799 | 280,949 | 40.5% |
| 2026-05-18 | 248,310 | 97,900 | 346,210 | 36.5% |
| 2026-05-11 | 391,093 | 196,618 | 587,711 | 42.7% |
| 2026-05-04 | 300,315 | 517,495 | 817,810 | 56.8% |
| 2026-04-27 | 282,867 | 120,506 | 403,373 | 41.1% |
| 2026-04-20 | 174,730 | 94,544 | 269,274 | 38.8% |
| 2026-04-13 | 231,971 | 99,669 | 331,640 | 34.6% |
| 2026-04-06 | 250,822 | 81,319 | 332,141 | 31.8% |
| 2026-03-30 | 253,705 | 93,600 | 347,305 | 35.5% |
| 2026-03-23 | 696,135 | 125,664 | 821,799 | 37.2% |
| 2026-03-16 | 414,049 | 266,833 | 680,882 | 41.0% |
| 2026-03-09 | 353,145 | 225,805 | 578,950 | 41.8% |
| 2026-03-02 | 213,829 | 94,300 | 308,129 | 32.4% |
| 2026-02-23 | 270,498 | 228,406 | 498,904 | 40.3% |
| 2026-02-16 | 273,856 | 168,538 | 442,394 | 38.3% |
| 2026-02-09 | 237,084 | 184,960 | 422,044 | 42.4% |
| 2026-02-02 | 141,811 | 410,634 | 552,445 | 56.4% |
| 2026-01-26 | 111,977 | 108,820 | 220,797 | 36.9% |
| 2026-01-19 | 98,064 | 71,170 | 169,234 | 36.4% |
| 2026-01-12 | 154,874 | 62,014 | 216,888 | 33.5% |
| 2026-01-05 | 185,567 | 254,944 | 440,511 | 45.5% |
| 2025-12-29 | 111,478 | 54,737 | 166,215 | 33.5% |
| 2025-12-22 | 88,028 | 45,863 | 133,891 | 33.8% |
| 2025-12-15 | 237,536 | 679,138 | 916,674 | 44.0% |
| 2025-12-08 | 269,218 | 645,804 | 915,022 | 53.8% |
| 2025-12-01 | 334,609 | 265,045 | 599,654 | 50.8% |
| 2025-11-24 | 282,664 | 485,622 | 768,286 | 42.7% |
| 2025-11-17 | 301,068 | 106,436 | 407,504 | 33.9% |
| 2025-11-10 | 165,254 | 122,590 | 287,844 | 36.2% |
| 2025-11-03 | 303,679 | 229,586 | 533,265 | 41.0% |
| 2025-10-27 | 193,682 | 148,883 | 342,565 | 38.2% |
| 2025-10-20 | 162,348 | 66,497 | 228,845 | 36.2% |
| 2025-10-13 | 164,083 | 68,162 | 232,245 | 36.1% |
| 2025-10-06 | 248,889 | 77,683 | 326,572 | 38.0% |
| 2025-09-29 | 383,058 | 179,157 | 562,215 | 45.5% |
| 2025-09-22 | 209,559 | 479,196 | 688,755 | 53.7% |
| 2025-09-15 | 294,314 | 263,991 | 558,305 | 34.4% |
| 2025-09-08 | 284,227 | 111,997 | 396,224 | 45.0% |
| 2025-09-01 | 134,266 | 108,915 | 243,181 | 41.4% |
| 2025-08-25 | 161,395 | 205,084 | 366,479 | 43.2% |
| 2025-08-18 | 127,217 | 184,472 | 311,689 | 45.9% |
Showing 1–47 of 47 weeks