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 |
|---|---|---|---|---|---|
| Swiss National Bank | 49,003 | $3.75M | 0.00% | +600+1.2% | Added |
| Engineers Gate Manager LP | 49,862 | $3.82M | 0.05% | +9,152+22.5% | Added |
| Intech Investment Management LLC | 51,556 | $3.95M | 0.04% | +30,023+139.4% | Added |
| American Century Companies Inc | 54,316 | $4.16M | 0.00% | −8,386−13.4% | Reduced |
| Ameriprise Financial Inc | 60,287 | $4.61M | 0.00% | +272+0.5% | Added |
| Legal & General Group Plc | 62,461 | $4.78M | 0.00% | −2,726−4.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 68,049 | $5.21M | 0.01% | +29,078+74.6% | Added |
| Rhumbline Advisers | 70,197 | $5.37M | 0.00% | −2,291−3.2% | Reduced |
| Leeward Investments, LLC - MA | 71,687 | $5.49M | 0.28% | −437−0.6% | Reduced |
| Citadel Advisors LLC | 72,694 | $5.56M | 0.00% | −10,695−12.8% | Reduced |
| SG Americas Securities, LLC | 75,814 | $5.80M | 0.01% | +56,425+291.0% | Added |
| UBS Asset Management Americas Inc | 78,672 | $6.02M | 0.00% | +1,314+1.7% | Added |
| Panagora Asset Management Inc | 82,098 | $6.28M | 0.02% | +2,639+3.3% | Added |
| ProShare Advisors LLC | 83,739 | $6.41M | 0.01% | +6,478+8.4% | Added |
| Teacher Retirement System of Texas | 84,425 | $6.46M | 0.02% | +22,027+35.3% | Added |
| Public Sector Pension Investment Board | 85,714 | $6.56M | 0.02% | −11,152−11.5% | Reduced |
| Mutual of America Capital Management LLC | 87,921 | $6.73M | 0.07% | +12,226+16.2% | Added |
| ZWJ Investment Counsel Inc | 94,535 | $7.24M | 0.26% | +49,705+110.9% | Added |
| Point72 Asset Management, L.P. | 95,775 | $7.33M | 0.01% | +83,982+712.1% | Added |
| Numerai GP LLC | 98,269 | $7.52M | 0.91% | +16,728+20.5% | Added |
| First Wilshire Securities Management Inc | 100,574 | $7.70M | 1.94% | +100,574 | New |
| SEI Investments Co | 103,702 | $7.94M | 0.01% | +37,181+55.9% | Added |
| Walleye Capital LLC | 103,935 | $7.96M | 0.05% | −46,871−31.1% | Reduced |
| Invesco Ltd. | 104,639 | $8.01M | 0.00% | +23,794+29.4% | Added |
| Jane Street Group, LLC | 108,961 | $8.34M | 0.01% | +16,195+17.5% | Added |
| HRT Financial LP | 116,932 | $8.95M | 0.03% | +27,395+30.6% | Added |
| Principal Financial Group Inc | 118,107 | $9.04M | 0.00% | −1,828−1.5% | Reduced |
| Renaissance Technologies LLC | 120,300 | $9.21M | 0.01% | −26,200−17.9% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 125,062 | $9.57M | 0.03% | +13,556+12.2% | Added |
| Bank of New York Mellon Corp | 137,828 | $10.5M | 0.00% | −77,357−35.9% | Reduced |
| Voloridge Investment Management, LLC | 138,401 | $10.6M | 0.04% | +12,315+9.8% | Added |
| Norges Bank | 139,200 | $10.7M | 0.00% | +139,200 | New |
| UBS Group AG | 142,055 | $10.9M | 0.00% | −22,992−13.9% | Reduced |
| Janus Henderson Group PLC | 150,851 | $11.5M | 0.01% | −107,256−41.6% | Reduced |
| Two Sigma Advisers, LP | 159,200 | $12.2M | 0.02% | +1,000+0.6% | Added |
| Two Sigma Investments, LP | 159,514 | $12.2M | 0.02% | +11,309+7.6% | Added |
| Assenagon Asset Management S.A. | 178,204 | $13.6M | 0.02% | +48,807+37.7% | Added |
| Morgan Stanley | 243,535 | $18.6M | 0.00% | −10,218−4.0% | Reduced |
| AQR Capital Management LLC | 268,151 | $20.5M | 0.01% | +86,942+48.0% | Added |
| Western Standard LLC | 268,367 | $20.5M | 9.48% | +241,367+894.0% | Added |
| Northern Trust Corp | 274,689 | $21.0M | 0.00% | −24,361−8.1% | Reduced |
| Gendell Jeffrey L | 285,351 | $21.8M | 0.38% | +110,402+63.1% | Added |
| Royce & Associates LP | 305,226 | $23.4M | 0.24% | −187,388−38.0% | Reduced |
| JPMorgan Chase & Co | 305,875 | $23.4M | 0.00% | −15,107−4.7% | Reduced |
| Brown Advisory Inc | 305,977 | $23.4M | 0.03% | −43,995−12.6% | Reduced |
| D. E. Shaw & Co., Inc. | 309,927 | $23.7M | 0.02% | +36,022+13.2% | Added |
| Qube Research & Technologies Ltd | 320,504 | $24.5M | 0.04% | −33,508−9.5% | Reduced |
| Bank of America Corp | 322,358 | $24.7M | 0.00% | −52,973−14.1% | Reduced |
| Charles Schwab Investment Management Inc | 373,540 | $28.6M | 0.00% | +12,950+3.6% | Added |
| Medina Singh Partners, LLC | 378,769 | $29.0M | 6.77% | +142,813+60.5% | Added |
| Goldman Sachs Group Inc | 484,968 | $37.1M | 0.01% | +202,325+71.6% | Added |
| Westwood Holdings Group Inc. | 491,451 | $37.6M | 0.31% | +43,489+9.7% | Added |
| Nuveen, LLC | 502,603 | $38.5M | 0.01% | +91,326+22.2% | Added |
| Millennium Management LLC | 533,312 | $40.8M | 0.03% | +51,824+10.8% | Added |
| Geode Capital Management, LLC | 609,220 | $46.6M | 0.00% | −4,992−0.8% | Reduced |
| State Street Corp | 949,038 | $72.6M | 0.00% | +19,915+2.1% | Added |
| Victory Capital Management Inc | 950,074 | $72.7M | 0.04% | +114,179+13.7% | Added |
| Dimensional Fund Advisors LP | 1,175,122 | $89.9M | 0.02% | +8,147+0.7% | Added |
| Allspring Global Investments Holdings, LLC | 2,356,503 | $179.8M | 0.29% | −35,246−1.5% | Reduced |
| Vanguard Group Inc | 3,121,151 | $238.9M | 0.00% | −22,271−0.7% | Reduced |
| BlackRock, Inc. | 3,662,323 | $280.3M | 0.00% | +29,338+0.8% | Added |
| Bahl & Gaynor Inc | 0 | $0 | 0.00% | −27,306−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −16,274−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −12,216−100.0% | Sold out |
| CBOE Vest Financial, LLC | 0 | $0 | 0.00% | −11,210−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −7,324−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −6,359−100.0% | Sold out |
| Tredje AP-fonden | 0 | $0 | 0.00% | −5,478−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −4,215−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −4,200−100.0% | Sold out |
| Legacy Wealth Asset Management, LLC | 0 | $0 | 0.00% | −4,063−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −3,929−100.0% | Sold out |
| Petrus Trust Company, LTA | 0 | $0 | 0.00% | −3,738−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −3,656−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −2,954−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −2,920−100.0% | Sold out |
| Farringdon Capital, Ltd. | 0 | $0 | 0.00% | −2,746−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −2,640−100.0% | Sold out |
| Vestcor Inc | 0 | $0 | 0.00% | −813−100.0% | Sold out |
| Westside Investment Management, Inc. | 0 | $0 | 0.00% | −199−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −128−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −103−100.0% | Sold out |
| High Note Wealth, LLC | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Private Wealth Management Group, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Bare Financial Services, Inc | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Ronald Blue Trust, Inc. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Cloud Capital Management, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| CIBC Bancorp USA Inc. | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |
| Shell Asset Management Co | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Hemington Wealth Management | – | – | – | – | Not filed |