InnospecIOSP
13F holders, Q1 2026 (March 31)266holders +6
34new positions
28sold out
9famous investors
$73.08avg. 13F price*
At the end of Q1 2026, 266 institutions reported holding Innospec Inc. (IOSP) in their 13F filings, up 6 from Q4 2025. 34 opened new positions and 28 sold out. The largest holders were BlackRock, Inc. ($283.2M), Allspring Global Investments Holdings, LLC ($170.5M) and Vanguard Portfolio Management LLC ($135.8M). 9 famous investors held it, including Steve Cohen (0.0% of Point72 Asset 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 34 | $21.0M |
| Exits | 28 | $88.0M |
All 13F filers, Q4 2025 → Q1 2026: 3,165,120 shares bought and 2,210,383 shares sold, net +954,737 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 266 holders
| BlackRock, Inc. | 0.01% | Add +5.9% | 3,878,975 | $283.2M |
| Allspring Global Investments Holdings, LLC | 0.29% | Reduce -1.7% | 2,315,942 | $170.5M |
| Vanguard Portfolio Management LLC | 0.01% | — | 1,860,091 | $135.8M |
| Dimensional Fund Advisors LP | 0.02% | Add +5.7% | 1,242,089 | $90.7M |
| Vanguard Capital Management LLC | 0.00% | — | 1,114,598 | $81.4M |
| State Street Corp. | 0.00% | Add +1.6% | 964,335 | $70.4M |
| Victory Capital Management Inc. | 0.04% | Reduce -9.0% | 864,994 | $63.2M |
| Nuveen, LLC | 0.01% | Add +28.0% | 643,248 | $47.0M |
| Geode Capital Management, LLC | 0.00% | Add +3.5% | 630,592 | $46.1M |
| Two Sigma Investments, LP | 0.04% | Add +271.8% | 593,039 | $43.3M |
| UBS Group AG | 0.01% | Add +298.4% | 565,911 | $41.3M |
| Goldman Sachs Group Inc. | 0.00% | Add +1.4% | 492,011 | $35.9M |
| Assenagon Asset Management S.A. | 0.06% | Add +175.5% | 490,884 | $35.8M |
| JPMorgan Chase & Co. | 0.00% | Add +39.3% | 426,050 | $31.2M |
| Qube Research & Technologies Ltd | 0.04% | Add +26.9% | 406,624 | $29.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.0% | 365,874 | $26.7M |
| AQR Capital Management | 0.01% | Add +16.4% | 312,065 | $22.8M |
| Brown Advisory Inc. | 0.04% | Reduce -3.1% | 296,465 | $21.6M |
| Gendell Jeffrey L | 0.29% | Add +3.2% | 294,504 | $21.5M |
| Bank of America Corp. | 0.00% | Reduce -9.8% | 290,766 | $21.2M |
| D. E. Shaw & Co. | 0.02% | Reduce -7.5% | 286,794 | $20.9M |
| Northern Trust Corp. | 0.00% | Add +3.5% | 284,239 | $20.8M |
| Royce & Associates LP | 0.19% | Reduce -14.4% | 261,336 | $19.1M |
| Morgan Stanley | 0.00% | Reduce -3.3% | 235,571 | $17.2M |
| Western Standard LLC | 8.71% | Reduce -15.5% | 226,833 | $16.6M |
| Citadel Advisors | 0.01% | Add +203.8% | 220,883 | $16.1M |
| Sei Investments Co. | 0.01% | Add +67.9% | 174,121 | $12.7M |
| Point72 Asset Management | 0.02% | Add +74.2% | 166,794 | $12.2M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 160,752 | $11.7M |
| First Wilshire Securities Management Inc. | 2.44% | Add +47.2% | 148,072 | $10.8M |
| Janus Henderson Group PLC | 0.00% | Reduce -11.7% | 133,272 | $9.7M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.7% | 131,291 | $9.6M |
| HRT Financial LP | 0.02% | Add +7.0% | 125,055 | $9.1M |
| Acadian Asset Management LLC | 0.01% | Add +765.5% | 122,552 | $8.9M |
| Hotchkis & Wiley Capital Management LLC | 0.03% | Reduce -3.4% | 120,810 | $8.8M |
| Principal Financial Group Inc. | 0.00% | Add +2.0% | 120,477 | $8.8M |
| Panagora Asset Management Inc. | 0.03% | Add +45.8% | 119,675 | $8.7M |
| Renaissance Technologies | 0.01% | Reduce -1.2% | 118,900 | $8.7M |
| Invesco Ltd. | 0.00% | Add +12.8% | 118,084 | $8.6M |
| Voloridge Investment Management, LLC | 0.03% | Reduce -22.0% | 107,963 | $7.9M |
| ZWJ Investment Counsel Inc. | 0.27% | Add +9.8% | 103,787 | $7.6M |
| Teacher Retirement System of Texas | 0.03% | Add +22.1% | 103,102 | $7.5M |
| Jane Street Group, LLC | 0.01% | Reduce -13.3% | 94,506 | $6.9M |
| ProShare Advisors LLC | 0.01% | Add +7.3% | 89,841 | $6.6M |
| Public Sector Pension Investment Board | 0.02% | Add +3.5% | 88,694 | $6.5M |
| Mutual of America Capital Management LLC | 0.07% | Reduce -0.5% | 87,463 | $6.4M |
| Trexquant Investment LP | 0.04% | Add +70.1% | 78,370 | $5.7M |
| Numerai GP LLC | 0.56% | Reduce -22.0% | 76,616 | $5.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -5.4% | 74,443 | $5.4M |
| Russell Investments Group, Ltd. | 0.01% | Add +515.8% | 71,607 | $5.2M |
| Rhumbline Advisers | 0.00% | Add +1.4% | 71,157 | $5.2M |
| Leeward Investments, LLC - MA | 0.25% | Reduce -2.6% | 69,810 | $5.1M |
| Deprince Race & Zollo Inc. | 0.09% | New | 68,029 | $5.0M |
| Engineers Gate Manager LP | 0.06% | Add +29.7% | 64,682 | $4.7M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Reduce -9.4% | 61,669 | $4.5M |
| Millennium Management | 0.00% | Reduce -88.5% | 61,427 | $4.5M |
| SG Americas Securities, LLC | 0.00% | Reduce -19.7% | 60,868 | $4.4M |
| Legal & General Group Plc | 0.00% | Reduce -5.3% | 59,120 | $4.3M |
| Ameriprise Financial Inc. | 0.00% | Reduce -6.2% | 56,535 | $4.1M |
| American Century Companies Inc. | 0.00% | Add +1.7% | 55,234 | $4.0M |
| FMR LLC | 0.00% | Add +40.3% | 51,805 | $3.8M |
| Swiss National Bank | 0.00% | No change | 49,003 | $3.6M |
| Intech Investment Management LLC | 0.03% | Reduce -12.8% | 44,967 | $3.3M |
| Atom Investors LP | 0.21% | Add +78.6% | 40,771 | $3.0M |
| Ieq Capital, LLC | 0.01% | Add +0.5% | 39,960 | $2.9M |
| BNP Paribas Financial Markets | 0.00% | Add +171.1% | 37,967 | $2.8M |
| Creative Planning | 0.00% | Reduce -15.8% | 37,635 | $2.7M |
| XTX Topco Ltd | 0.05% | Add +272.7% | 36,292 | $2.7M |
| PDT Partners, LLC | 0.15% | Reduce -19.4% | 34,576 | $2.5M |
| Edgestream Partners, L.P. | 0.08% | Reduce -26.3% | 34,226 | $2.5M |
| Marshall Wace, LLP | 0.00% | Add +263.3% | 33,526 | $2.4M |
| Franklin Resources Inc. | 0.00% | Add +17.4% | 33,485 | $2.4M |
| Y-Intercept (Hong Kong) Ltd | 0.05% | Add +35.3% | 33,296 | $2.4M |
| Penn Capital Management Company, LLC | 0.19% | New | 33,286 | $2.4M |
| Connors Investor Services Inc. | 0.22% | Add +1.8% | 33,095 | $2.4M |
| T. Rowe Price Associates Inc. | 0.00% | Add +12.1% | 31,826 | $2.3M |
| Ingalls & Snyder LLC | 0.07% | No change | 28,927 | $2.1M |
| State of New Jersey Common Pension Fund D | 0.01% | Reduce -6.9% | 28,227 | $2.1M |
| Alliancebernstein L.P. | 0.00% | Reduce -1.5% | 26,509 | $2.0M |
| California State Teachers Retirement System | 0.00% | Add +15.7% | 27,529 | $2.0M |
| Moran Wealth Management, LLC | 0.06% | Reduce -35.7% | 27,031 | $2.0M |
| Holocene Advisors, LP | 0.00% | Add +39.0% | 26,473 | $1.9M |
| Schonfeld Strategic Advisors LLC | 0.02% | Add +48.5% | 26,250 | $1.9M |
| Jump Financial, LLC | 0.03% | Add +17.5% | 26,200 | $1.9M |
| Dark Forest Capital Management LP | 0.17% | Reduce -42.4% | 25,643 | $1.9M |
| HSBC Holdings PLC | 0.00% | Add +70.8% | 25,351 | $1.9M |
| Prudential Financial Inc. | 0.00% | Add +7.7% | 25,269 | $1.8M |
| Huber Capital Management LLC | 0.28% | Add +11.5% | 25,148 | $1.8M |
| Voya Investment Management LLC | 0.00% | Reduce -0.7% | 25,093 | $1.8M |
| Brevan Howard Capital Management LP | 0.02% | Add +81.5% | 24,436 | $1.8M |
| CM Management, LLC | 1.47% | Add +20.0% | 24,000 | $1.8M |
| Citigroup Inc. | 0.00% | Add +34.3% | 23,792 | $1.7M |
| KLP Kapitalforvaltning As | 0.01% | Add +339.6% | 23,300 | $1.7M |
| Deutsche Bank AG | 0.00% | Add +15.7% | 22,750 | $1.7M |
| Cerity Partners LLC | 0.00% | Add +16.6% | 22,513 | $1.6M |
| Centiva Capital, LP | 0.07% | New | 21,641 | $1.6M |
| Wedge Capital Management L L P | 0.03% | Add +9.0% | 21,473 | $1.6M |
| Barclays PLC | 0.00% | Reduce -53.8% | 21,189 | $1.5M |
| Gsa Capital Partners LLP | 0.10% | Add +21.1% | 21,100 | $1.5M |
| Capital Fund Management S.A. | 0.01% | Reduce -4.8% | 20,834 | $1.5M |
"% of holder's portfolio" is IOSP's weight in each manager's 13F, not the share of Innospec Inc. the manager owns.