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, Q1 2026
Institutional positions in Innospec Inc. as of Mar 31, 2026. 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
- +11 vs. Q4 2025
- Shares held
- 24.9M
- +3.92M (+18.7%) vs. Q4 2025
- Total value
- $1.82B
- +$214.6M (+13.3%) vs. Q4 2025
- New holders
- 41
- 114 more added
- Sold out
- 30
- 79 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Innospec Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 20,305 | $1.48M | 0.00% | −974−4.6% | Reduced |
| Entropy Technologies, LP | 19,968 | $1.46M | 0.07% | +4,989+33.3% | Added |
| Mariner, LLC | 19,710 | $1.44M | 0.00% | +4,027+25.7% | Added |
| Campbell & CO Investment Adviser LLC | 18,751 | $1.37M | 0.08% | +18,751 | New |
| Arrowstreet Capital, Limited Partnership | 18,497 | $1.35M | 0.00% | +12,259+196.5% | Added |
| Aquatic Capital Management LLC | 18,185 | $1.33M | 0.04% | +8,526+88.3% | Added |
| Wells Fargo & Company | 17,626 | $1.29M | 0.00% | −17,465−49.8% | Reduced |
| Raymond James Financial Inc | 17,515 | $1.28M | 0.00% | +17,515 | New |
| Richard Bernstein Advisors LLC | 17,281 | $1.26M | 0.04% | +17,281 | New |
| Vanguard Asset Management, Ltd | 17,279 | $1.26M | 0.00% | +17,279 | New |
| Thrivent Financial for Lutherans | 16,539 | $1.21M | 0.00% | −487−2.9% | Reduced |
| Squarepoint Ops LLC | 16,486 | $1.20M | 0.00% | +16,486 | New |
| Capstone Investment Advisors, LLC | 15,757 | $1.15M | 0.01% | +4,405+38.8% | Added |
| Summit Global Investments | 14,430 | $1.05M | 0.06% | +14,430 | New |
| CWM, LLC | 14,328 | $1.05M | 0.00% | +3,876+37.1% | Added |
| MetLife Investment Management | 14,131 | $1.03M | 0.01% | −125−0.9% | Reduced |
| Illinois Municipal Retirement Fund | 13,861 | $1.01M | 0.01% | +1,094+8.6% | Added |
| State of Alaska, Department of Revenue | 13,465 | $982.0K | 0.01% | −282−2.1% | Reduced |
| State of Tennessee, Treasury Department | 12,867 | $939.5K | 0.00% | +2,704+26.6% | Added |
| First Trust Advisors LP | 12,716 | $928.5K | 0.00% | +440+3.6% | Added |
| Quadrature Capital Ltd | 12,500 | $912.8K | 0.01% | +6,545+109.9% | Added |
| Fifth Third Bancorp | 12,482 | $911.5K | 0.00% | +12,251+5,303.5% | Added |
| Round Hill Asset Management | 11,974 | $874.3K | 0.57% | 00.0% | Unchanged |
| Linden Thomas Advisory Services, LLC | 11,810 | $862.4K | 0.08% | +449+4.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 11,642 | $850.1K | 0.00% | +87+0.8% | Added |
| Jacobs Levy Equity Management, Inc | 11,622 | $848.6K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 11,203 | $818.0K | 0.00% | −391−3.4% | Reduced |
| Louisiana State Employees Retirement System | 11,000 | $803.2K | 0.01% | −400−3.5% | Reduced |
| Freestone Grove Partners LP | 10,511 | $767.5K | 0.01% | −2,964−22.0% | Reduced |
| Susquehanna International Group, LLP | 10,492 | $766.1K | 0.00% | +4,369+71.4% | Added |
| Mirabella Financial Services LLP | 10,359 | $756.4K | 0.07% | +10,359 | New |
| EntryPoint Capital, LLC | 9,993 | $729.7K | 0.21% | −692−6.5% | Reduced |
| Horizon Investments, LLC | 9,956 | $727.0K | 0.01% | +9,956 | New |
| Vanguard Global Advisers, LLC | 9,793 | $715.1K | 0.00% | +9,793 | New |
| New York State Common Retirement Fund | 8,911 | $650.7K | 0.00% | 00.0% | Unchanged |
| Amundi | 8,875 | $648.1K | 0.00% | +3,686+71.0% | Added |
| Quantbot Technologies LP | 8,780 | $641.1K | 0.03% | +4,677+114.0% | Added |
| New York State Teachers Retirement System | 8,651 | $632.0K | 0.00% | +689+8.7% | Added |
| GWM Advisors LLC | 8,625 | $629.8K | 0.00% | +2,114+32.5% | Added |
| Mercer Global Advisors Inc | 8,404 | $613.7K | 0.00% | +869+11.5% | Added |
| HGK Asset Management Inc | 8,373 | $611.4K | 0.09% | +4,057+94.0% | Added |
| Man Group plc | 8,092 | $590.9K | 0.00% | +2,375+41.5% | Added |
| Wealth Enhancement Advisory Services, LLC | 7,897 | $582.7K | 0.00% | −1,326−14.4% | Reduced |
| Vanguard Investments Australia, Ltd. | 7,935 | $579.4K | 0.00% | +7,935 | New |
| Gotham Asset Management, LLC | 7,674 | $560.4K | 0.00% | +7,674 | New |
| Amalgamated Bank | 7,135 | $521.0K | 0.00% | −80−1.1% | Reduced |
| CWM Advisors, LLC | 7,033 | $513.5K | 0.03% | +947+15.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 6,951 | $507.6K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 6,805 | $496.9K | 0.00% | −80−1.2% | Reduced |
| Axq Capital, LP | 6,784 | $495.4K | 0.06% | +6,784 | New |
| State Board of Administration of Florida Retirement System | 6,727 | $491.2K | 0.00% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 6,641 | $484.9K | 0.00% | +1,052+18.8% | Added |
| Yousif Capital Management, LLC | 6,619 | $483.3K | 0.01% | −94−1.4% | Reduced |
| Aigen Investment Management, LP | 6,589 | $481.1K | 0.12% | +3,609+121.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 6,419 | $468.7K | 0.00% | −3,046−32.2% | Reduced |
| Teachers Retirement System of the State of Kentucky | 6,230 | $455.0K | 0.00% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 6,127 | $447.4K | 0.00% | −7−0.1% | Reduced |
| Ethic Inc. | 6,091 | $444.8K | 0.01% | +740+13.8% | Added |
| Bridgewater Associates, LP | 5,950 | $434.5K | 0.00% | +5,950 | New |
| Oregon Public Employees Retirement Fund | 5,631 | $411.2K | 0.01% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 5,606 | $409.4K | 0.00% | −1,691−23.2% | Reduced |
| Keybank National Association | 5,583 | $407.7K | 0.00% | −418−7.0% | Reduced |
| Diversified Trust Co | 5,378 | $392.7K | 0.01% | +1,555+40.7% | Added |
| Cetera Investment Advisers | 5,315 | $388.1K | 0.00% | +456+9.4% | Added |
| Bell & Brown Wealth Advisors, LLC | 4,966 | $362.6K | 0.12% | 00.0% | Unchanged |
| LPL Financial LLC | 4,910 | $358.5K | 0.00% | −167−3.3% | Reduced |
| Caxton Associates LLP | 4,726 | $345.1K | 0.01% | +4,726 | New |
| Pictet Asset Management Holding SA | 4,708 | $343.8K | 0.00% | +656+16.2% | Added |
| Bailard, Inc. | 4,700 | $343.2K | 0.01% | +4,700 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 4,527 | $330.6K | 0.00% | +4,527 | New |
| R Squared Ltd | 4,363 | $318.6K | 0.17% | −1,520−25.8% | Reduced |
| Polymer Capital Management (US) LLC | 4,269 | $311.7K | 0.05% | +811+23.5% | Added |
| Envestnet Asset Management Inc | 3,928 | $286.8K | 0.00% | +467+13.5% | Added |
| ISAM Funds (UK) Ltd | 3,922 | $286.4K | 0.14% | +3,922 | New |
| State of Wyoming | 3,918 | $286.1K | 0.03% | +1,732+79.2% | Added |
| Indivisible Partners | 3,868 | $282.5K | 0.02% | +3,868 | New |
| Toroso Investments, LLC | 3,853 | $281.3K | 0.00% | +1,019+36.0% | Added |
| Tudor Investment Corp Et Al | 3,784 | $276.3K | 0.00% | +3,784 | New |
| MQS Management LLC | 3,662 | $267.4K | 0.18% | +3,662 | New |
| Maryland State Retirement & Pension System | 3,612 | $263.7K | 0.01% | 00.0% | Unchanged |
| Captrust Financial Advisors | 3,600 | $262.9K | 0.00% | +240+7.1% | Added |
| Headlands Technologies LLC | 3,519 | $257.0K | 0.03% | +3,519 | New |
| DRW Securities, LLC | 3,229 | $235.8K | 0.01% | +3,229 | New |
| James Investment Research Inc | 3,015 | $220.2K | 0.02% | −6,934−69.7% | Reduced |
| Public Employees Retirement Association of Colorado | 3,018 | $220.0K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 2,885 | $211.0K | 0.01% | +2,885 | New |
| Aster Capital Management (DIFC) Ltd | 1,630 | $154.4K | 0.05% | +1,559+2,195.8% | Added |
| Ameritas Investment Partners, Inc. | 2,099 | $153.3K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,902 | $138.9K | 0.00% | −428−18.4% | Reduced |
| Nisa Investment Advisors, LLC | 1,900 | $138.7K | 0.00% | −34−1.8% | Reduced |
| MAI Capital Management | 1,576 | $115.1K | 0.00% | +620+64.9% | Added |
| Smartleaf Asset Management LLC | 1,229 | $90.0K | 0.00% | −436−26.2% | Reduced |
| Ensign Peak Advisors, Inc | 1,209 | $88.3K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,115 | $80.5K | 0.00% | +876+366.5% | Added |
| The PNC Financial Services Group, Inc. | 1,079 | $78.8K | 0.00% | −1,282−54.3% | Reduced |
| Murphy & Mullick Capital Management Corp | 962 | $70.2K | 0.05% | 00.0% | Unchanged |
| Allworth Financial LP | 930 | $67.9K | 0.00% | +50+5.7% | Added |
| HM Payson & Co | 909 | $66.4K | 0.00% | 00.0% | Unchanged |
| KBC Group NV | 860 | $63.0K | 0.00% | 00.0% | Unchanged |
| Eurizon Capital SGR S.p.A. | 804 | $59.1K | 0.00% | 00.0% | Unchanged |