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, Q3 2025
Institutional positions in Innospec Inc. as of Sep 30, 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
- 266
- +8 vs. Q2 2025
- Shares held
- 24.0M
- +54.7K (+0.2%) vs. Q2 2025
- Total value
- $1.85B
- −$170.5M (−8.4%) vs. Q2 2025
- New holders
- 32
- 108 more added
- Sold out
- 24
- 97 more reduced
4 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Innospec Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,632,985 | $280.3M | 0.00% | −29,427−0.8% | Reduced |
| Vanguard Group Inc | 3,143,422 | $242.5M | 0.00% | −19,519−0.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 2,391,749 | $183.8M | 0.29% | −91,436−3.7% | Reduced |
| Dimensional Fund Advisors LP | 1,166,975 | $90.0M | 0.02% | −1,950−0.2% | Reduced |
| State Street Corp | 929,123 | $71.7M | 0.00% | −41,102−4.2% | Reduced |
| Victory Capital Management Inc | 835,895 | $64.5M | 0.04% | −122,591−12.8% | Reduced |
| First Trust Advisors LP | 640,562 | $49.4M | 0.04% | −161,942−20.2% | Reduced |
| Geode Capital Management, LLC | 614,212 | $47.4M | 0.00% | −105,386−14.6% | Reduced |
| Royce & Associates LP | 492,614 | $38.0M | 0.38% | −134,888−21.5% | Reduced |
| Millennium Management LLC | 481,488 | $37.2M | 0.03% | +131,483+37.6% | Added |
| Westwood Holdings Group Inc. | 447,962 | $34.6M | 0.25% | +35,652+8.6% | Added |
| Nuveen, LLC | 411,277 | $31.7M | 0.01% | +115,265+38.9% | Added |
| Bank of America Corp | 375,331 | $29.0M | 0.00% | +79,833+27.0% | Added |
| Charles Schwab Investment Management Inc | 360,590 | $27.8M | 0.00% | +4,413+1.2% | Added |
| Qube Research & Technologies Ltd | 354,012 | $27.3M | 0.04% | +47,251+15.4% | Added |
| Brown Advisory Inc | 349,972 | $27.0M | 0.04% | −76,572−18.0% | Reduced |
| JPMorgan Chase & Co | 320,982 | $24.8M | 0.00% | −182−0.1% | Reduced |
| Northern Trust Corp | 299,050 | $23.1M | 0.00% | −3,452−1.1% | Reduced |
| Goldman Sachs Group Inc | 282,643 | $21.8M | 0.00% | +177,972+170.0% | Added |
| D. E. Shaw & Co., Inc. | 273,905 | $21.1M | 0.02% | +102,167+59.5% | Added |
| Janus Henderson Group PLC | 258,107 | $19.9M | 0.01% | +2,688+1.1% | Added |
| Morgan Stanley | 253,753 | $19.6M | 0.00% | −10,082−3.8% | Reduced |
| Medina Singh Partners, LLC | 235,956 | $18.2M | 4.25% | +235,956 | New |
| Bank of New York Mellon Corp | 215,185 | $16.6M | 0.00% | −15,822−6.8% | Reduced |
| AQR Capital Management LLC | 181,209 | $14.0M | 0.01% | +109,185+151.6% | Added |
| Gendell Jeffrey L | 174,949 | $13.5M | 0.25% | +95,168+119.3% | Added |
| UBS Group AG | 165,047 | $12.7M | 0.00% | +58,778+55.3% | Added |
| Two Sigma Advisers, LP | 158,200 | $12.2M | 0.02% | +77,700+96.5% | Added |
| Cubist Systematic Strategies, LLC | 154,165 | $11.9M | 0.17% | −64,923−29.6% | Reduced |
| Walleye Capital LLC | 150,806 | $11.6M | 0.09% | +110,686+275.9% | Added |
| Two Sigma Investments, LP | 148,205 | $11.4M | 0.02% | +9,966+7.2% | Added |
| Renaissance Technologies LLC | 146,500 | $11.3M | 0.01% | −100−0.1% | Reduced |
| Assenagon Asset Management S.A. | 129,397 | $9.98M | 0.01% | +108,254+512.0% | Added |
| Voloridge Investment Management, LLC | 126,086 | $9.73M | 0.03% | −34,077−21.3% | Reduced |
| Principal Financial Group Inc | 119,935 | $9.25M | 0.00% | −17,281−12.6% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 111,506 | $8.60M | 0.03% | +41,271+58.8% | Added |
| Public Sector Pension Investment Board | 96,866 | $7.47M | 0.03% | +11,907+14.0% | Added |
| Jane Street Group, LLC | 92,766 | $7.16M | 0.01% | −24,433−20.8% | Reduced |
| HRT Financial LP | 89,537 | $6.91M | 0.03% | +57,295+177.7% | Added |
| Citadel Advisors LLC | 83,389 | $6.43M | 0.01% | −11,187−11.8% | Reduced |
| Numerai GP LLC | 81,541 | $6.29M | 0.89% | +18,649+29.7% | Added |
| Invesco Ltd. | 80,845 | $6.24M | 0.00% | −142,918−63.9% | Reduced |
| Panagora Asset Management Inc | 79,459 | $6.13M | 0.02% | +301+0.4% | Added |
| UBS Asset Management Americas Inc | 77,358 | $5.97M | 0.00% | −47,806−38.2% | Reduced |
| ProShare Advisors LLC | 77,261 | $5.96M | 0.01% | +2,205+2.9% | Added |
| Mutual of America Capital Management LLC | 75,695 | $5.84M | 0.06% | −1,560−2.0% | Reduced |
| Rhumbline Advisers | 72,488 | $5.59M | 0.00% | −8,993−11.0% | Reduced |
| Leeward Investments, LLC - MA | 72,124 | $5.57M | 0.28% | −1,610−2.2% | Reduced |
| SEI Investments Co | 66,521 | $5.13M | 0.01% | +11,049+19.9% | Added |
| Legal & General Group Plc | 65,187 | $5.03M | 0.00% | −4,486−6.4% | Reduced |
| American Century Companies Inc | 62,702 | $4.84M | 0.00% | +6,841+12.2% | Added |
| Teacher Retirement System of Texas | 62,398 | $4.81M | 0.02% | +2,388+4.0% | Added |
| Ameriprise Financial Inc | 60,015 | $4.63M | 0.00% | −25,262−29.6% | Reduced |
| BNP Paribas Arbitrage, SA | 52,033 | $4.01M | 0.00% | +32,048+160.4% | Added |
| ExodusPoint Capital Management, LP | 48,560 | $3.75M | 0.05% | −8,248−14.5% | Reduced |
| Swiss National Bank | 48,403 | $3.73M | 0.00% | +400+0.8% | Added |
| Barclays PLC | 46,341 | $3.58M | 0.00% | −5,169−10.0% | Reduced |
| Quest Partners LLC | 45,174 | $3.49M | 0.23% | +16,360+56.8% | Added |
| ZWJ Investment Counsel Inc | 44,830 | $3.46M | 0.12% | +5,410+13.7% | Added |
| Moran Wealth Management, LLC | 44,357 | $3.42M | 0.10% | +1,754+4.1% | Added |
| PDT Partners, LLC | 42,876 | $3.31M | 0.21% | +29,433+218.9% | Added |
| Verition Fund Management LLC | 42,515 | $3.28M | 0.02% | +9,897+30.3% | Added |
| Edgestream Partners, L.P. | 41,522 | $3.20M | 0.09% | −5,546−11.8% | Reduced |
| Deutsche Bank AG | 41,030 | $3.17M | 0.00% | +24,635+150.3% | Added |
| Engineers Gate Manager LP | 40,710 | $3.14M | 0.04% | +1,648+4.2% | Added |
| Voya Investment Management LLC | 40,233 | $3.10M | 0.00% | −107,105−72.7% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 38,971 | $3.01M | 0.01% | +38,971 | New |
| Algert Global LLC | 34,728 | $2.68M | 0.04% | +4,180+13.7% | Added |
| Wells Fargo & Company | 33,891 | $2.62M | 0.00% | −14,355−29.8% | Reduced |
| Dark Forest Capital Management LP | 33,798 | $2.61M | 0.10% | +4,601+15.8% | Added |
| Connors Investor Services Inc | 33,673 | $2.60M | 0.22% | +12,107+56.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 30,152 | $2.33M | 0.06% | −11,093−26.9% | Reduced |
| Great West Life Assurance Co | 29,631 | $2.28M | 0.00% | +363+1.2% | Added |
| Ingalls & Snyder LLC | 28,927 | $2.23M | 0.07% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 28,274 | $2.18M | 0.18% | +8,974+46.5% | Added |
| Jump Financial, LLC | 27,889 | $2.15M | 0.03% | +15,630+127.5% | Added |
| Franklin Resources Inc | 27,868 | $2.15M | 0.00% | +196+0.7% | Added |
| Bahl & Gaynor Inc | 27,306 | $2.11M | 0.01% | +731+2.8% | Added |
| Acadian Asset Management LLC | 27,314 | $2.10M | 0.00% | +22,629+483.0% | Added |
| Alliancebernstein L.P. | 27,223 | $2.10M | 0.00% | 00.0% | Unchanged |
| Western Standard LLC | 27,000 | $2.08M | 1.11% | +27,000 | New |
| Ieq Capital, LLC | 26,390 | $2.04M | 0.01% | +16,413+164.5% | Added |
| Canada Pension Plan Investment Board | 26,000 | $2.01M | 0.00% | +26,000 | New |
| Trexquant Investment LP | 25,666 | $1.98M | 0.02% | −33,758−56.8% | Reduced |
| State of New Jersey Common Pension Fund D | 25,325 | $1.95M | 0.01% | +3,463+15.8% | Added |
| Schonfeld Strategic Advisors LLC | 25,264 | $1.95M | 0.01% | −4,167−14.2% | Reduced |
| Prudential Financial Inc | 25,159 | $1.94M | 0.00% | −890−3.4% | Reduced |
| Holocene Advisors, LP | 24,530 | $1.89M | 0.00% | +5,089+26.2% | Added |
| Price T Rowe Associates Inc | 23,362 | $1.80M | 0.00% | +981+4.4% | Added |
| California State Teachers Retirement System | 23,063 | $1.78M | 0.00% | +10.0% | Added |
| Huber Capital Management LLC | 22,548 | $1.74M | 0.28% | +2,400+11.9% | Added |
| Citigroup Inc | 22,251 | $1.72M | 0.00% | −6,040−21.3% | Reduced |
| Intech Investment Management LLC | 21,533 | $1.66M | 0.01% | +564+2.7% | Added |
| Cerity Partners LLC | 21,042 | $1.62M | 0.00% | +6,209+41.9% | Added |
| SG Americas Securities, LLC | 19,389 | $1.50M | 0.01% | −31,535−61.9% | Reduced |
| Brevan Howard Capital Management LP | 18,184 | $1.40M | 0.02% | +9,131+100.9% | Added |
| Thrivent Financial for Lutherans | 17,915 | $1.38M | 0.00% | −17,842−49.9% | Reduced |
| Public Employees Retirement System of Ohio | 17,334 | $1.34M | 0.00% | +2,377+15.9% | Added |
| Quantbot Technologies LP | 16,971 | $1.31M | 0.04% | −14,081−45.3% | Reduced |
| Wedge Capital Management L L P | 16,345 | $1.26M | 0.02% | +1,393+9.3% | Added |