INNOSPEC INC (IOSP)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
260
Reporting holders
$2.0B
Reported value
100.5%
Of shares outstanding
0.0%
Held as options
+18
Holder change
Institutions report 24,753,632 shares against 24,631,047 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $356.6M | 4,381,323 | 0.01% | 8q | +13.0%+$40.9M |
| Allspring Global Investments Holdings, LLC | $154.7M | 1,892,471 | 0.24% | 19q | -18.3%-$34.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $153.4M | 1,884,244 | 0.01% | 2q | +1.3%+$2.0M |
| DIMENSIONAL FUND ADVISORS LP | $106.2M | 1,305,038 | 0.02% | 31q | +5.1%+$5.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $90.2M | 1,108,107 | 0.00% | 2q | -0.6%-$528.3K |
| STATE STREET CORP | $81.1M | 996,027 | 0.00% | 31q | +3.3%+$2.6M |
| Nuveen, LLC | $61.5M | 755,723 | 0.01% | 6q | +17.5%+$9.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $54.3M | 666,589 | 0.00% | 31q | +5.7%+$2.9M |
| GOLDMAN SACHS GROUP INC | $53.9M | 662,210 | 0.00% | 31q | +34.6%+$13.9M |
| VICTORY CAPITAL MANAGEMENT INC | $53.7M | 660,110 | 0.03% | 30q | -23.7%-$16.7M |
| TWO SIGMA INVESTMENTS, LP | $46.3M | 568,709 | 0.03% | 22q | -4.1%-$2.0M |
| Assenagon Asset Management S.A. | $44.4M | 545,564 | 0.03% | 5q | +11.1%+$4.5M |
| AQR CAPITAL MANAGEMENT LLC | $39.3M | 482,545 | 0.01% | 20q | +54.6%+$13.9M |
| BROWN ADVISORY INC | $33.2M | 408,468 | 0.05% | 6q | +37.8%+$9.1M |
| JPMORGAN CHASE & CO | $30.0M | 370,574 | 0.00% | 31q | -13.0%-$4.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $28.9M | 355,658 | 0.00% | 31q | -2.8%-$831.5K |
| Sixth Street Partners Management Company, L.P. | $28.9M | 355,658 | 0.00% | new | NEW |
| GENDELL JEFFREY L | $26.4M | 324,504 | 0.23% | 10q | +10.2%+$2.4M |
| ROYCE & ASSOCIATES LP | $25.1M | 308,726 | 0.20% | 31q | +18.1%+$3.9M |
| NORTHERN TRUST CORP | $24.7M | 303,044 | 0.00% | 31q | +6.6%+$1.5M |
| Qube Research & Technologies Ltd | $23.3M | 285,849 | 0.02% | 15q | -29.7%-$9.8M |
| Western Standard LLC | $19.3M | 236,833 | 6.53% | 4q | +4.4%+$813.9K |
| BANK OF AMERICA CORP /DE/ | $19.2M | 235,742 | 0.00% | 31q | -18.9%-$4.5M |
| MORGAN STANLEY | $18.8M | 230,793 | 0.00% | 35q | -2.0%-$388.9K |
| RENAISSANCE TECHNOLOGIES LLC | $15.1M | 185,000 | 0.02% | 9q | +55.6%+$5.4M |
| PANAGORA ASSET MANAGEMENT INC | $14.9M | 182,538 | 0.05% | 31q | +52.5%+$5.1M |
| Public Sector Pension Investment Board | $13.8M | 169,154 | 0.02% | 31q | +90.7%+$6.5M |
| D. E. Shaw & Co., Inc. | $13.5M | 165,746 | 0.01% | 31q | -42.2%-$9.9M |
| VANGUARD FIDUCIARY TRUST CO | $13.3M | 163,715 | 0.00% | 2q | +1.8%+$241.2K |
| SEI INVESTMENTS CO | $12.7M | 156,051 | 0.01% | 19q | -10.4%-$1.5M |
| UBS Group AG | $12.5M | 154,001 | 0.00% | 31q | -72.8%-$33.5M |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | $12.0M | 147,112 | 2.47% | 3q | -0.6%-$78.1K |
| MACKENZIE FINANCIAL CORP | $11.8M | 144,677 | 0.01% | new | NEW |
| Bank of New York Mellon Corp | $11.2M | 137,261 | 0.00% | 31q | +4.5%+$485.9K |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $11.0M | 135,740 | 0.03% | 12q | +12.4%+$1.2M |
| Jupiter Topco LLC | $10.4M | 127,976 | 0.00% | new | FIRST |
| Leeward Investments, LLC - MA | $10.2M | 125,308 | 0.46% | 18q | +79.5%+$4.5M |
| PRINCIPAL FINANCIAL GROUP INC | $9.7M | 119,053 | 0.00% | 31q | -1.2%-$115.9K |
| Russell Investments Group, Ltd. | $9.6M | 118,614 | 0.01% | 31q | +65.6%+$3.8M |
| Invesco Ltd. | $9.6M | 118,427 | 0.00% | 31q | HELD |
| ZWJ INVESTMENT COUNSEL INC | $8.8M | 108,502 | 0.29% | 31q | +4.5%+$383.7K |
| Creative Planning | $8.5M | 104,224 | 0.00% | 13q | +176.9%+$5.4M |
| CITADEL ADVISORS LLC | $8.0M | 98,549 | 0.00% | 12q | -55.4%-$10.0M |
| DEPRINCE RACE & ZOLLO INC | $7.6M | 93,348 | 0.13% | 2q | +37.2%+$2.1M |
| FIRST TRUST ADVISORS LP | $7.4M | 91,252 | 0.00% | 31q | +617.6%+$6.4M |
| TEACHER RETIREMENT SYSTEM OF TEXAS | $7.0M | 85,463 | 0.02% | 23q | -17.1%-$1.4M |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | $6.7M | 82,920 | 0.07% | 31q | -5.2%-$369.8K |
| FMR LLC | $6.7M | 82,759 | 0.00% | 31q | +59.8%+$2.5M |
| ProShare Advisors LLC | $6.6M | 81,232 | 0.01% | 25q | -9.6%-$700.7K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $6.0M | 73,457 | 0.00% | 31q | -1.3%-$80.3K |
| SG Capital Management LLC | $5.8M | 71,022 | 0.48% | new | NEW |
| Numerai GP LLC | $5.4M | 66,931 | 0.45% | 5q | -12.6%-$788.3K |
| RHUMBLINE ADVISERS | $5.3M | 65,055 | 0.00% | 31q | -8.6%-$496.6K |
| Trexquant Investment LP | $4.9M | 60,528 | 0.03% | 7q | -22.8%-$1.5M |
| Balyasny Asset Management L.P. | $4.9M | 59,751 | 0.01% | new | NEW |
| Legal & General Group Plc | $4.8M | 58,841 | 0.00% | 31q | HELD |
| AMERICAN CENTURY COMPANIES INC | $4.5M | 55,093 | 0.00% | 22q | HELD |
| AMERIPRISE FINANCIAL INC | $4.4M | 54,517 | 0.00% | 31q | -51.8%-$4.8M |
| Swiss National Bank | $4.1M | 49,903 | 0.00% | 31q | +1.8%+$73.3K |
| IEQ CAPITAL, LLC | $3.7M | 45,343 | 0.02% | 5q | +13.5%+$438.1K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $3.6M | 43,995 | 0.01% | 4q | -28.7%-$1.4M |
| Point72 Asset Management, L.P. | $3.5M | 42,648 | 0.00% | 8q | -74.4%-$10.1M |
| Atom Investors LP | $3.3M | 40,870 | 0.30% | 4q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $3.2M | 39,514 | 0.00% | 31q | +4.1%+$125.9K |
| DARK FOREST CAPITAL MANAGEMENT LP | $3.2M | 38,862 | 0.20% | 5q | +51.6%+$1.1M |
| FRANKLIN RESOURCES INC | $3.2M | 38,748 | 0.00% | 13q | +15.7%+$428.4K |
| INTECH INVESTMENT MANAGEMENT LLC | $3.1M | 38,292 | 0.03% | 9q | -14.8%-$543.3K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $2.8M | 34,876 | 0.00% | 3q | +88.5%+$1.3M |
| CM Management, LLC | $2.6M | 32,000 | 1.65% | 5q | +33.3%+$651.1K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $2.6M | 31,857 | 0.01% | 9q | -70.5%-$6.2M |
| Cerity Partners LLC | $2.5M | 31,315 | 0.00% | 10q | +39.1%+$716.4K |
| PDT Partners, LLC | $2.5M | 31,176 | 0.13% | 5q | -9.8%-$276.7K |
| WELLS FARGO & COMPANY/MN | $2.5M | 30,221 | 0.00% | 31q | -14.3%-$409.5K |
| Edgestream Partners, L.P. | $2.4M | 29,208 | 0.07% | 8q | -14.7%-$408.4K |
| Huber Capital Management LLC | $2.4M | 29,148 | 0.35% | 31q | +15.9%+$325.6K |
| MERCER GLOBAL ADVISORS INC /ADV | $2.4M | 29,044 | 0.00% | 4q | +245.6%+$1.7M |
| DEUTSCHE BANK AG\ | $2.2M | 27,565 | 0.00% | 34q | +21.2%+$391.9K |
| Mariner, LLC | $2.2M | 26,935 | 0.00% | 4q | +36.7%+$588.0K |
| VOYA INVESTMENT MANAGEMENT LLC | $2.1M | 25,915 | 0.00% | 31q | +3.3%+$66.9K |
| CITIGROUP INC | $2.1M | 25,692 | 0.00% | 31q | +8.0%+$154.6K |
| ALLIANCEBERNSTEIN L.P. | $2.1M | 28,622 | 0.00% | 31q | +8.0%+$154.3K |
| PRUDENTIAL FINANCIAL INC | $2.1M | 25,529 | 0.00% | 31q | +1.0%+$21.2K |
| BARCLAYS PLC | $2.0M | 24,713 | 0.00% | 31q | +16.6%+$286.8K |
| ExodusPoint Capital Management, LP | $1.9M | 23,810 | 0.01% | new | NEW |
| HSBC HOLDINGS PLC | $1.9M | 23,693 | 0.00% | 10q | -6.5%-$135.5K |
| Holocene Advisors, LP | $1.9M | 23,760 | 0.00% | 6q | -10.2%-$220.8K |
| Moran Wealth Management, LLC | $1.9M | 23,639 | 0.05% | 15q | -12.5%-$276.1K |
| CONNORS INVESTOR SERVICES INC | $1.9M | 23,363 | 0.16% | 25q | -29.4%-$792.1K |
| KLP KAPITALFORVALTNING AS | $1.9M | 23,300 | 0.01% | 7q | HELD |
| MARSHALL WACE, LLP | $1.9M | 23,075 | 0.00% | 3q | -31.2%-$850.6K |
| Louisiana State Employees Retirement System | $1.7M | 21,800 | 0.01% | 31q | +98.2%+$833.4K |
| WEDGE CAPITAL MANAGEMENT L L P/NC | $1.7M | 20,329 | 0.03% | 5q | -5.3%-$93.1K |
| XTX Topco Ltd | $1.6M | 20,188 | 0.02% | 3q | -44.4%-$1.3M |
| Linden Thomas Advisory Services, LLC | $1.6M | 19,815 | 0.13% | 13q | +67.8%+$651.5K |
| VANGUARD ASSET MANAGEMENT, Ltd | $1.6M | 19,560 | 0.00% | 2q | +13.2%+$185.7K |
| Blackstone Inc. | $1.6M | 19,163 | 0.00% | new | NEW |
| Brevan Howard Capital Management LP | $1.4M | 17,540 | 0.01% | 7q | -28.2%-$561.3K |
| State of New Jersey Common Pension Fund D | $1.4M | 17,315 | 0.00% | 21q | -38.7%-$888.1K |
| Y-Intercept (Hong Kong) Ltd | $1.2M | 14,815 | 0.02% | 5q | -55.5%-$1.5M |
| MetLife Investment Management, LLC | $1.2M | 14,712 | 0.01% | 32q | +4.1%+$47.3K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-07-31 | 13G/A | Allspring Global Investments Holdings, LLC | 7.7% |
| 2026-07-14 | 13G | Dimensional Fund Advisors LP | 5.3% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 260 | $2.0B | 24,753,632 | 43 | 95 | 84 | 0.0% |
| Q1 2026 | 242 | $1.8B | 24,522,094 | 32 | 104 | 70 | 0.0% |
| Q4 2025 | 238 | $1.8B | 23,977,868 | 25 | 96 | 82 | 0.6% |
| Q3 2025 | 240 | $1.9B | 24,035,368 | 29 | 95 | 84 | 0.6% |
| Q2 2025 | 236 | $2.0B | 23,768,815 | 27 | 98 | 76 | 0.0% |
| Q1 2025 | 248 | $2.3B | 24,653,978 | 35 | 87 | 77 | 0.0% |
| Q4 2024 | 237 | $2.6B | 23,844,597 | 21 | 82 | 73 | 0.0% |
| Q3 2024 | 236 | $2.7B | 23,931,079 | 26 | 76 | 95 | 0.0% |
| Q2 2024 | 241 | $2.9B | 23,759,810 | 33 | 90 | 72 | 0.0% |
| Q1 2024 | 214 | $3.1B | 24,142,414 | 25 | 72 | 81 | 0.0% |
| Q4 2023 | 197 | $2.9B | 23,639,319 | 16 | 62 | 80 | 0.0% |
| Q3 2023 | 184 | $2.4B | 23,082,392 | 15 | 67 | 64 | 0.0% |
| Q2 2023 | 178 | $2.3B | 23,116,091 | 15 | 70 | 60 | 0.0% |
| Q1 2023 | 179 | $2.3B | 22,547,626 | 10 | 73 | 65 | 0.0% |
| Q4 2022 | 166 | $2.1B | 20,574,627 | 30 | 67 | 43 | 0.0% |
| Q3 2022 | 190 | $2.1B | 24,243,048 | 15 | 75 | 62 | 0.0% |
| Q2 2022 | 199 | $2.3B | 23,943,600 | 31 | 61 | 70 | 0.1% |
| Q1 2022 | 187 | $2.2B | 23,806,104 | 19 | 66 | 61 | 0.0% |
| Q4 2021 | 185 | $2.1B | 23,790,070 | 22 | 59 | 58 | 0.2% |
| Q3 2021 | 184 | $2.0B | 23,443,342 | 15 | 75 | 59 | 0.0% |
| Q2 2021 | 178 | $2.1B | 23,381,265 | 20 | 72 | 53 | 0.0% |
| Q1 2021 | 179 | $2.4B | 23,561,232 | 21 | 46 | 68 | 0.0% |
| Q4 2020 | 175 | $2.2B | 23,761,039 | 20 | 49 | 67 | 0.0% |
| Q3 2020 | 184 | $1.5B | 23,213,397 | 20 | 55 | 72 | 0.4% |
| Q2 2020 | 180 | $1.8B | 23,540,970 | 22 | 67 | 54 | 0.1% |
| Q1 2020 | 178 | $1.6B | 23,326,434 | 15 | 61 | 71 | 0.1% |
| Q4 2019 | 205 | $2.4B | 23,637,177 | 19 | 71 | 78 | 0.1% |
| Q3 2019 | 207 | $2.1B | 23,079,184 | 31 | 79 | 56 | 0.1% |
| Q2 2019 | 198 | $2.1B | 23,178,471 | 34 | 60 | 52 | 0.2% |
| Q1 2019 | 187 | $1.9B | 23,211,993 | 27 | 63 | 59 | 0.1% |
| Q4 2018 | 178 | $1.4B | 23,294,862 | 4 | 1 | 3 | 0.1% |