InnospecIOSP
13F holders, Q3 2025 (September 30)266holders +4
31new positions
23sold out
7famous investors
$77.13avg. 13F price*
At the end of Q3 2025, 266 institutions reported holding Innospec Inc. (IOSP) in their 13F filings, up 4 from Q2 2025. 31 opened new positions and 23 sold out. The largest holders were BlackRock, Inc. ($280.3M), Vanguard Group Inc. ($242.5M) and Allspring Global Investments Holdings, LLC ($183.8M). 7 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Innospec Inc.
- CUSIP
- 45768S105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 31 | $30.9M |
| Exits | 23 | $29.0M |
All 13F filers, Q2 2025 → Q3 2025: 2,118,055 shares bought and 2,037,853 shares sold, net +80,202 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 266 holders
| BlackRock, Inc. | 0.00% | Reduce -0.8% | 3,632,985 | $280.3M |
| Vanguard Group Inc. | 0.00% | Reduce -0.6% | 3,143,422 | $242.5M |
| Allspring Global Investments Holdings, LLC | 0.29% | Reduce -3.7% | 2,391,749 | $183.8M |
| Dimensional Fund Advisors LP | 0.02% | Reduce -0.2% | 1,166,975 | $90.0M |
| State Street Corp. | 0.00% | Reduce -4.2% | 929,123 | $71.7M |
| Victory Capital Management Inc. | 0.04% | Reduce -12.8% | 835,895 | $64.5M |
| First Trust Advisors LP | 0.04% | Reduce -20.2% | 640,562 | $49.4M |
| Geode Capital Management, LLC | 0.00% | Reduce -14.7% | 614,212 | $47.4M |
| Royce & Associates LP | 0.38% | Reduce -21.5% | 492,614 | $38.0M |
| Millennium Management | 0.03% | Add +37.6% | 481,488 | $37.2M |
| Westwood Holdings Group Inc. | 0.25% | Add +8.7% | 447,962 | $34.6M |
| Nuveen, LLC | 0.01% | Add +38.9% | 411,277 | $31.7M |
| Bank of America Corp. | 0.00% | Add +27.0% | 375,331 | $29.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.2% | 360,590 | $27.8M |
| Qube Research & Technologies Ltd | 0.04% | Add +15.4% | 354,012 | $27.3M |
| Brown Advisory Inc. | 0.04% | Reduce -17.9% | 349,972 | $27.0M |
| JPMorgan Chase & Co. | 0.00% | Reduce -0.1% | 320,982 | $24.8M |
| Northern Trust Corp. | 0.00% | Reduce -1.1% | 299,050 | $23.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +170.0% | 282,643 | $21.8M |
| D. E. Shaw & Co. | 0.02% | Add +59.5% | 273,905 | $21.1M |
| Janus Henderson Group PLC | 0.01% | Add +1.1% | 258,107 | $19.9M |
| Morgan Stanley | 0.00% | Reduce -3.8% | 253,753 | $19.6M |
| Medina Value Partners, LLC | 4.25% | New | 235,956 | $18.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -6.8% | 215,185 | $16.6M |
| AQR Capital Management | 0.01% | Add +151.6% | 181,209 | $14.0M |
| Gendell Jeffrey L | 0.25% | Add +119.3% | 174,949 | $13.5M |
| UBS Group AG | 0.00% | Add +55.3% | 165,047 | $12.7M |
| Two Sigma Advisers, LP | 0.02% | Add +96.5% | 158,200 | $12.2M |
| Cubist Systematic Strategies, LLC | 0.17% | Reduce -29.6% | 154,165 | $11.9M |
| Walleye Capital LLC | 0.10% | Add +275.9% | 150,806 | $11.6M |
| Two Sigma Investments, LP | 0.02% | Add +7.2% | 148,205 | $11.4M |
| Renaissance Technologies | 0.01% | Reduce -0.1% | 146,500 | $11.3M |
| Assenagon Asset Management S.A. | 0.01% | Add +512.0% | 129,397 | $10.0M |
| Voloridge Investment Management, LLC | 0.03% | Reduce -21.3% | 126,086 | $9.7M |
| Principal Financial Group Inc. | 0.00% | Reduce -12.6% | 119,935 | $9.3M |
| Hotchkis & Wiley Capital Management LLC | 0.03% | Add +58.8% | 111,506 | $8.6M |
| Public Sector Pension Investment Board | 0.03% | Add +14.0% | 96,866 | $7.5M |
| Jane Street Group, LLC | 0.01% | Reduce -20.9% | 92,766 | $7.2M |
| HRT Financial LP | 0.03% | Add +177.7% | 89,537 | $6.9M |
| Citadel Advisors | 0.01% | Reduce -11.8% | 83,389 | $6.4M |
| Numerai GP LLC | 0.89% | Add +29.6% | 81,541 | $6.3M |
| Invesco Ltd. | 0.00% | Reduce -63.9% | 80,845 | $6.2M |
| Panagora Asset Management Inc. | 0.02% | Add +0.4% | 79,459 | $6.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -38.2% | 77,358 | $6.0M |
| ProShare Advisors LLC | 0.01% | Add +2.9% | 77,261 | $6.0M |
| Mutual of America Capital Management LLC | 0.06% | Reduce -2.0% | 75,695 | $5.8M |
| Rhumbline Advisers | 0.00% | Reduce -11.0% | 72,488 | $5.6M |
| Leeward Investments, LLC - MA | 0.28% | Reduce -2.2% | 72,124 | $5.6M |
| Sei Investments Co. | 0.01% | Add +19.9% | 66,521 | $5.1M |
| Legal & General Group Plc | 0.00% | Reduce -6.4% | 65,187 | $5.0M |
| American Century Companies Inc. | 0.00% | Add +12.3% | 62,702 | $4.8M |
| Teacher Retirement System of Texas | 0.02% | Add +4.0% | 62,398 | $4.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -29.6% | 60,015 | $4.6M |
| BNP Paribas Financial Markets | 0.00% | Add +160.4% | 52,033 | $4.0M |
| ExodusPoint Capital Management, LP | 0.05% | Reduce -14.5% | 48,560 | $3.7M |
| Swiss National Bank | 0.00% | Add +0.8% | 48,403 | $3.7M |
| Barclays PLC | 0.00% | Reduce -10.0% | 46,341 | $3.6M |
| AlphaQuest LLC | 0.23% | Add +56.8% | 45,174 | $3.5M |
| ZWJ Investment Counsel Inc. | 0.12% | Add +13.7% | 44,830 | $3.5M |
| Moran Wealth Management, LLC | 0.10% | Add +4.1% | 44,357 | $3.4M |
| PDT Partners, LLC | 0.21% | Add +218.9% | 42,876 | $3.3M |
| Verition Fund Management LLC | 0.02% | Add +30.3% | 42,515 | $3.3M |
| Edgestream Partners, L.P. | 0.09% | Reduce -11.8% | 41,522 | $3.2M |
| Deutsche Bank AG | 0.00% | Add +150.3% | 41,030 | $3.2M |
| Engineers Gate Manager LP | 0.04% | Add +4.2% | 40,710 | $3.1M |
| Voya Investment Management LLC | 0.00% | Reduce -72.7% | 40,233 | $3.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | New | 38,971 | $3.0M |
| Algert Global LLC | 0.04% | Add +13.7% | 34,728 | $2.7M |
| Wells Fargo & Company | 0.00% | Reduce -29.8% | 33,891 | $2.6M |
| Dark Forest Capital Management LP | 0.10% | Add +15.8% | 33,798 | $2.6M |
| Connors Investor Services Inc. | 0.22% | Add +56.1% | 33,673 | $2.6M |
| Y-Intercept (Hong Kong) Ltd | 0.06% | Reduce -26.9% | 30,152 | $2.3M |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +1.2% | 29,631 | $2.3M |
| Ingalls & Snyder LLC | 0.07% | No change | 28,927 | $2.2M |
| Gsa Capital Partners LLP | 0.18% | Add +46.5% | 28,274 | $2.2M |
| Jump Financial, LLC | 0.03% | Add +127.5% | 27,889 | $2.2M |
| Franklin Resources Inc. | 0.00% | Add +0.7% | 27,868 | $2.2M |
| Bahl & Gaynor LLC | 0.01% | Add +2.8% | 27,306 | $2.1M |
| Acadian Asset Management LLC | 0.00% | Add +483.0% | 27,314 | $2.1M |
| Alliancebernstein L.P. | 0.00% | No change | 27,223 | $2.1M |
| Western Standard LLC | 1.11% | New | 27,000 | $2.1M |
| Ieq Capital, LLC | 0.01% | Add +164.5% | 26,390 | $2.0M |
| Canada Pension Plan Investment Board | 0.00% | New | 26,000 | $2.0M |
| Trexquant Investment LP | 0.02% | Reduce -56.8% | 25,666 | $2.0M |
| State of New Jersey Common Pension Fund D | 0.01% | Add +15.8% | 25,325 | $2.0M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -14.2% | 25,264 | $1.9M |
| Prudential Financial Inc. | 0.00% | Reduce -3.4% | 25,159 | $1.9M |
| Holocene Advisors, LP | 0.00% | Add +26.2% | 24,530 | $1.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.4% | 23,362 | $1.8M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 23,063 | $1.8M |
| Huber Capital Management LLC | 0.28% | Add +11.9% | 22,548 | $1.7M |
| Citigroup Inc. | 0.00% | Reduce -21.4% | 22,251 | $1.7M |
| Intech Investment Management LLC | 0.01% | Add +2.7% | 21,533 | $1.7M |
| Cerity Partners LLC | 0.00% | Add +41.9% | 21,042 | $1.6M |
| SG Americas Securities, LLC | 0.01% | Reduce -61.9% | 19,389 | $1.5M |
| Brevan Howard Capital Management LP | 0.02% | Add +100.9% | 18,184 | $1.4M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -49.9% | 17,915 | $1.4M |
| Public Employees Retirement System of Ohio | 0.00% | Add +15.9% | 17,334 | $1.3M |
| Quantbot Technologies LP | 0.04% | Reduce -45.4% | 16,971 | $1.3M |
| Wedge Capital Management L L P | 0.02% | Add +9.3% | 16,345 | $1.3M |
"% of holder's portfolio" is IOSP's weight in each manager's 13F, not the share of Innospec Inc. the manager owns.