Innospec Inc.
IOSP- Exchange
- Nasdaq
- Industry
- Chemicals & Allied Products
- SEC CIK
- 0001054905
No open-market purchases or sales by Innospec Inc. insiders were filed in the last 90 days; 281 institutions reported holding it in 13F filings for Q2 2026, worth $2.00B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Innospec Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 261
- +1 vs. Q3 2025
- Shares held
- 24.3M
- +496.4K (+2.1%) vs. Q3 2025
- Total value
- $1.86B
- +$23.6M (+1.3%) vs. Q3 2025
- New holders
- 31
- 104 more added
- Sold out
- 30
- 92 more reduced
6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IOSP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 281 | $2.00B |
| Q1 2026 | 266 | $1.82B |
| Q4 2025 | 261 | $1.86B |
| Q3 2025 | 266 | $1.85B |
| Q2 2025 | 262 | $2.03B |
| Q1 2025 | 272 | $2.29B |
| Q4 2024 | 262 | $2.66B |
| Q3 2024 | 261 | $2.73B |
| Q2 2024 | 266 | $2.96B |
| Q1 2024 | 239 | $3.10B |
| Q4 2023 | 223 | $2.96B |
| Q3 2023 | 212 | $2.44B |
| Q2 2023 | 205 | $2.39B |
| Q1 2023 | 219 | $2.45B |
| Q4 2022 | 223 | $2.44B |
| Q3 2022 | 193 | $2.03B |
| Q2 2022 | 199 | $2.29B |
| Q1 2022 | 188 | $2.20B |
| Q4 2021 | 184 | $2.14B |
| Q3 2021 | 188 | $1.97B |
| Q2 2021 | 180 | $2.12B |
| Q1 2021 | 180 | $2.42B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Innospec Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,662,323 | $280.3M | 0.00% | +29,338+0.8% | Added |
| Vanguard Group Inc | 3,121,151 | $238.9M | 0.00% | −22,271−0.7% | Reduced |
| Allspring Global Investments Holdings, LLC | 2,356,503 | $179.8M | 0.29% | −35,246−1.5% | Reduced |
| Dimensional Fund Advisors LP | 1,175,122 | $89.9M | 0.02% | +8,147+0.7% | Added |
| Victory Capital Management Inc | 950,074 | $72.7M | 0.04% | +114,179+13.7% | Added |
| State Street Corp | 949,038 | $72.6M | 0.00% | +19,915+2.1% | Added |
| Geode Capital Management, LLC | 609,220 | $46.6M | 0.00% | −4,992−0.8% | Reduced |
| Millennium Management LLC | 533,312 | $40.8M | 0.03% | +51,824+10.8% | Added |
| Nuveen, LLC | 502,603 | $38.5M | 0.01% | +91,326+22.2% | Added |
| Westwood Holdings Group Inc. | 491,451 | $37.6M | 0.31% | +43,489+9.7% | Added |
| Goldman Sachs Group Inc | 484,968 | $37.1M | 0.01% | +202,325+71.6% | Added |
| Medina Singh Partners, LLC | 378,769 | $29.0M | 6.77% | +142,813+60.5% | Added |
| Charles Schwab Investment Management Inc | 373,540 | $28.6M | 0.00% | +12,950+3.6% | Added |
| Bank of America Corp | 322,358 | $24.7M | 0.00% | −52,973−14.1% | Reduced |
| Qube Research & Technologies Ltd | 320,504 | $24.5M | 0.04% | −33,508−9.5% | Reduced |
| D. E. Shaw & Co., Inc. | 309,927 | $23.7M | 0.02% | +36,022+13.2% | Added |
| Brown Advisory Inc | 305,977 | $23.4M | 0.03% | −43,995−12.6% | Reduced |
| JPMorgan Chase & Co | 305,875 | $23.4M | 0.00% | −15,107−4.7% | Reduced |
| Royce & Associates LP | 305,226 | $23.4M | 0.24% | −187,388−38.0% | Reduced |
| Gendell Jeffrey L | 285,351 | $21.8M | 0.38% | +110,402+63.1% | Added |
| Northern Trust Corp | 274,689 | $21.0M | 0.00% | −24,361−8.1% | Reduced |
| Western Standard LLC | 268,367 | $20.5M | 9.48% | +241,367+894.0% | Added |
| AQR Capital Management LLC | 268,151 | $20.5M | 0.01% | +86,942+48.0% | Added |
| Morgan Stanley | 243,535 | $18.6M | 0.00% | −10,218−4.0% | Reduced |
| Assenagon Asset Management S.A. | 178,204 | $13.6M | 0.02% | +48,807+37.7% | Added |
| Two Sigma Investments, LP | 159,514 | $12.2M | 0.02% | +11,309+7.6% | Added |
| Two Sigma Advisers, LP | 159,200 | $12.2M | 0.02% | +1,000+0.6% | Added |
| Janus Henderson Group PLC | 150,851 | $11.5M | 0.01% | −107,256−41.6% | Reduced |
| UBS Group AG | 142,055 | $10.9M | 0.00% | −22,992−13.9% | Reduced |
| Norges Bank | 139,200 | $10.7M | 0.00% | +139,200 | New |
| Voloridge Investment Management, LLC | 138,401 | $10.6M | 0.04% | +12,315+9.8% | Added |
| Bank of New York Mellon Corp | 137,828 | $10.5M | 0.00% | −77,357−35.9% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 125,062 | $9.57M | 0.03% | +13,556+12.2% | Added |
| Renaissance Technologies LLC | 120,300 | $9.21M | 0.01% | −26,200−17.9% | Reduced |
| Principal Financial Group Inc | 118,107 | $9.04M | 0.00% | −1,828−1.5% | Reduced |
| HRT Financial LP | 116,932 | $8.95M | 0.03% | +27,395+30.6% | Added |
| Jane Street Group, LLC | 108,961 | $8.34M | 0.01% | +16,195+17.5% | Added |
| Invesco Ltd. | 104,639 | $8.01M | 0.00% | +23,794+29.4% | Added |
| Walleye Capital LLC | 103,935 | $7.96M | 0.05% | −46,871−31.1% | Reduced |
| SEI Investments Co | 103,702 | $7.94M | 0.01% | +37,181+55.9% | Added |
| First Wilshire Securities Management Inc | 100,574 | $7.70M | 1.94% | +100,574 | New |
| Numerai GP LLC | 98,269 | $7.52M | 0.91% | +16,728+20.5% | Added |
| Point72 Asset Management, L.P. | 95,775 | $7.33M | 0.01% | +83,982+712.1% | Added |
| ZWJ Investment Counsel Inc | 94,535 | $7.24M | 0.26% | +49,705+110.9% | Added |
| Mutual of America Capital Management LLC | 87,921 | $6.73M | 0.07% | +12,226+16.2% | Added |
| Public Sector Pension Investment Board | 85,714 | $6.56M | 0.02% | −11,152−11.5% | Reduced |
| Teacher Retirement System of Texas | 84,425 | $6.46M | 0.02% | +22,027+35.3% | Added |
| ProShare Advisors LLC | 83,739 | $6.41M | 0.01% | +6,478+8.4% | Added |
| Panagora Asset Management Inc | 82,098 | $6.28M | 0.02% | +2,639+3.3% | Added |
| UBS Asset Management Americas Inc | 78,672 | $6.02M | 0.00% | +1,314+1.7% | Added |
| SG Americas Securities, LLC | 75,814 | $5.80M | 0.01% | +56,425+291.0% | Added |
| Citadel Advisors LLC | 72,694 | $5.56M | 0.00% | −10,695−12.8% | Reduced |
| Leeward Investments, LLC - MA | 71,687 | $5.49M | 0.28% | −437−0.6% | Reduced |
| Rhumbline Advisers | 70,197 | $5.37M | 0.00% | −2,291−3.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 68,049 | $5.21M | 0.01% | +29,078+74.6% | Added |
| Legal & General Group Plc | 62,461 | $4.78M | 0.00% | −2,726−4.2% | Reduced |
| Ameriprise Financial Inc | 60,287 | $4.61M | 0.00% | +272+0.5% | Added |
| American Century Companies Inc | 54,316 | $4.16M | 0.00% | −8,386−13.4% | Reduced |
| Intech Investment Management LLC | 51,556 | $3.95M | 0.04% | +30,023+139.4% | Added |
| Engineers Gate Manager LP | 49,862 | $3.82M | 0.05% | +9,152+22.5% | Added |
| Swiss National Bank | 49,003 | $3.75M | 0.00% | +600+1.2% | Added |
| Edgestream Partners, L.P. | 46,434 | $3.55M | 0.10% | +4,912+11.8% | Added |
| Trexquant Investment LP | 46,073 | $3.53M | 0.03% | +20,407+79.5% | Added |
| Barclays PLC | 45,848 | $3.51M | 0.00% | −493−1.1% | Reduced |
| Creative Planning | 44,693 | $3.42M | 0.00% | +31,062+227.9% | Added |
| Dark Forest Capital Management LP | 44,524 | $3.41M | 0.16% | +10,726+31.7% | Added |
| PDT Partners, LLC | 42,876 | $3.28M | 0.21% | 00.0% | Unchanged |
| Quest Partners LLC | 42,228 | $3.23M | 0.18% | −2,946−6.5% | Reduced |
| Moran Wealth Management, LLC | 42,035 | $3.22M | 0.10% | −2,322−5.2% | Reduced |
| Ieq Capital, LLC | 39,774 | $3.04M | 0.01% | +13,384+50.7% | Added |
| FMR LLC | 36,921 | $2.83M | 0.00% | +35,915+3,570.1% | Added |
| Wells Fargo & Company | 35,091 | $2.69M | 0.00% | +1,200+3.5% | Added |
| Algert Global LLC | 34,278 | $2.62M | 0.04% | −450−1.3% | Reduced |
| Connors Investor Services Inc | 32,525 | $2.49M | 0.21% | −1,148−3.4% | Reduced |
| State of New Jersey Common Pension Fund D | 30,314 | $2.32M | 0.01% | +4,989+19.7% | Added |
| Ingalls & Snyder LLC | 28,927 | $2.21M | 0.08% | 00.0% | Unchanged |
| Franklin Resources Inc | 28,511 | $2.18M | 0.00% | +643+2.3% | Added |
| Price T Rowe Associates Inc | 28,383 | $2.17M | 0.00% | +5,021+21.5% | Added |
| Alliancebernstein L.P. | 26,923 | $2.06M | 0.00% | −300−1.1% | Reduced |
| Verition Fund Management LLC | 26,664 | $2.04M | 0.01% | −15,851−37.3% | Reduced |
| Canada Pension Plan Investment Board | 26,000 | $1.99M | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 25,264 | $1.93M | 0.00% | −14,969−37.2% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 24,614 | $1.88M | 0.04% | −5,538−18.4% | Reduced |
| California State Teachers Retirement System | 23,800 | $1.82M | 0.00% | +737+3.2% | Added |
| Prudential Financial Inc | 23,464 | $1.80M | 0.00% | −1,695−6.7% | Reduced |
| Atom Investors LP | 22,830 | $1.75M | 0.14% | +19,405+566.6% | Added |
| Huber Capital Management LLC | 22,548 | $1.73M | 0.25% | 00.0% | Unchanged |
| Jump Financial, LLC | 22,300 | $1.71M | 0.02% | −5,589−20.0% | Reduced |
| Jain Global LLC | 22,159 | $1.70M | 0.02% | +22,159 | New |
| Capital Fund Management S.A. | 21,877 | $1.67M | 0.02% | +9,294+73.9% | Added |
| Great West Life Assurance Co | 21,279 | $1.63M | 0.00% | −8,352−28.2% | Reduced |
| Public Employees Retirement System of Ohio | 20,136 | $1.54M | 0.00% | +2,802+16.2% | Added |
| CM Management, LLC | 20,000 | $1.53M | 1.29% | +8,000+66.7% | Added |
| Wedge Capital Management L L P | 19,699 | $1.51M | 0.03% | +3,354+20.5% | Added |
| Deutsche Bank AG | 19,665 | $1.51M | 0.00% | −21,365−52.1% | Reduced |
| Cerity Partners LLC | 19,309 | $1.48M | 0.00% | −1,733−8.2% | Reduced |
| Holocene Advisors, LP | 19,045 | $1.46M | 0.00% | −5,485−22.4% | Reduced |
| Citigroup Inc | 17,713 | $1.36M | 0.00% | −4,538−20.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 17,677 | $1.35M | 0.01% | −7,587−30.0% | Reduced |
| ExodusPoint Capital Management, LP | 17,622 | $1.35M | 0.02% | −30,938−63.7% | Reduced |