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 |
|---|---|---|---|---|---|
| BNP Paribas Arbitrage, SA | 37,967 | $2.77M | 0.00% | +23,962+171.1% | Added |
| Ieq Capital, LLC | 39,960 | $2.92M | 0.01% | +186+0.5% | Added |
| Atom Investors LP | 40,771 | $2.98M | 0.21% | +17,941+78.6% | Added |
| Intech Investment Management LLC | 44,967 | $3.28M | 0.03% | −6,589−12.8% | Reduced |
| Swiss National Bank | 49,003 | $3.58M | 0.00% | 00.0% | Unchanged |
| FMR LLC | 51,805 | $3.78M | 0.00% | +14,884+40.3% | Added |
| American Century Companies Inc | 55,234 | $4.03M | 0.00% | +918+1.7% | Added |
| Ameriprise Financial Inc | 56,535 | $4.13M | 0.00% | −3,752−6.2% | Reduced |
| Legal & General Group Plc | 59,120 | $4.32M | 0.00% | −3,341−5.3% | Reduced |
| SG Americas Securities, LLC | 60,868 | $4.45M | 0.00% | −14,946−19.7% | Reduced |
| Millennium Management LLC | 61,427 | $4.49M | 0.00% | −471,885−88.5% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 61,669 | $4.50M | 0.01% | −6,380−9.4% | Reduced |
| Engineers Gate Manager LP | 64,682 | $4.72M | 0.06% | +14,820+29.7% | Added |
| Deprince Race & Zollo Inc | 68,029 | $4.97M | 0.09% | +68,029 | New |
| Leeward Investments, LLC - MA | 69,810 | $5.10M | 0.25% | −1,877−2.6% | Reduced |
| Rhumbline Advisers | 71,157 | $5.20M | 0.00% | +960+1.4% | Added |
| Russell Investments Group, Ltd. | 71,607 | $5.23M | 0.01% | +59,979+515.8% | Added |
| UBS Asset Management Americas Inc | 74,443 | $5.44M | 0.00% | −4,229−5.4% | Reduced |
| Numerai GP LLC | 76,616 | $5.59M | 0.56% | −21,653−22.0% | Reduced |
| Trexquant Investment LP | 78,370 | $5.72M | 0.04% | +32,297+70.1% | Added |
| Mutual of America Capital Management LLC | 87,463 | $6.39M | 0.07% | −458−0.5% | Reduced |
| Public Sector Pension Investment Board | 88,694 | $6.48M | 0.02% | +2,980+3.5% | Added |
| ProShare Advisors LLC | 89,841 | $6.56M | 0.01% | +6,102+7.3% | Added |
| Jane Street Group, LLC | 94,506 | $6.90M | 0.01% | −14,455−13.3% | Reduced |
| Teacher Retirement System of Texas | 103,102 | $7.53M | 0.03% | +18,677+22.1% | Added |
| ZWJ Investment Counsel Inc | 103,787 | $7.58M | 0.27% | +9,252+9.8% | Added |
| Voloridge Investment Management, LLC | 107,963 | $7.88M | 0.03% | −30,438−22.0% | Reduced |
| Invesco Ltd. | 118,084 | $8.62M | 0.00% | +13,445+12.8% | Added |
| Renaissance Technologies LLC | 118,900 | $8.68M | 0.01% | −1,400−1.2% | Reduced |
| Panagora Asset Management Inc | 119,675 | $8.74M | 0.03% | +37,577+45.8% | Added |
| Principal Financial Group Inc | 120,477 | $8.80M | 0.00% | +2,370+2.0% | Added |
| Hotchkis & Wiley Capital Management LLC | 120,810 | $8.82M | 0.03% | −4,252−3.4% | Reduced |
| Acadian Asset Management LLC | 122,552 | $8.94M | 0.01% | +108,393+765.5% | Added |
| HRT Financial LP | 125,055 | $9.13M | 0.02% | +8,123+6.9% | Added |
| Bank of New York Mellon Corp | 131,291 | $9.59M | 0.00% | −6,537−4.7% | Reduced |
| Janus Henderson Group PLC | 133,272 | $9.73M | 0.00% | −17,579−11.7% | Reduced |
| First Wilshire Securities Management Inc | 148,072 | $10.8M | 2.44% | +47,498+47.2% | Added |
| Vanguard Fiduciary Trust Co | 160,752 | $11.7M | 0.00% | +160,752 | New |
| Point72 Asset Management, L.P. | 166,794 | $12.2M | 0.02% | +71,019+74.2% | Added |
| SEI Investments Co | 174,121 | $12.7M | 0.01% | +70,419+67.9% | Added |
| Citadel Advisors LLC | 220,883 | $16.1M | 0.01% | +148,189+203.9% | Added |
| Western Standard LLC | 226,833 | $16.6M | 8.71% | −41,534−15.5% | Reduced |
| Morgan Stanley | 235,571 | $17.2M | 0.00% | −7,964−3.3% | Reduced |
| Royce & Associates LP | 261,336 | $19.1M | 0.19% | −43,890−14.4% | Reduced |
| Northern Trust Corp | 284,239 | $20.8M | 0.00% | +9,550+3.5% | Added |
| D. E. Shaw & Co., Inc. | 286,794 | $20.9M | 0.02% | −23,133−7.5% | Reduced |
| Bank of America Corp | 290,766 | $21.2M | 0.00% | −31,592−9.8% | Reduced |
| Gendell Jeffrey L | 294,504 | $21.5M | 0.29% | +9,153+3.2% | Added |
| Brown Advisory Inc | 296,465 | $21.6M | 0.04% | −9,512−3.1% | Reduced |
| AQR Capital Management LLC | 312,065 | $22.8M | 0.01% | +43,914+16.4% | Added |
| Charles Schwab Investment Management Inc | 365,874 | $26.7M | 0.00% | −7,666−2.1% | Reduced |
| Qube Research & Technologies Ltd | 406,624 | $29.7M | 0.04% | +86,120+26.9% | Added |
| JPMorgan Chase & Co | 426,050 | $31.2M | 0.00% | +120,175+39.3% | Added |
| Assenagon Asset Management S.A. | 490,884 | $35.8M | 0.06% | +312,680+175.5% | Added |
| Goldman Sachs Group Inc | 492,011 | $35.9M | 0.00% | +7,043+1.5% | Added |
| UBS Group AG | 565,911 | $41.3M | 0.01% | +423,856+298.4% | Added |
| Two Sigma Investments, LP | 593,039 | $43.3M | 0.04% | +433,525+271.8% | Added |
| Geode Capital Management, LLC | 630,592 | $46.1M | 0.00% | +21,372+3.5% | Added |
| Nuveen, LLC | 643,248 | $47.0M | 0.01% | +140,645+28.0% | Added |
| Victory Capital Management Inc | 864,994 | $63.2M | 0.04% | −85,080−9.0% | Reduced |
| State Street Corp | 964,335 | $70.4M | 0.00% | +15,297+1.6% | Added |
| Vanguard Capital Management LLC | 1,114,598 | $81.4M | 0.00% | +1,114,598 | New |
| Dimensional Fund Advisors LP | 1,242,089 | $90.7M | 0.02% | +66,967+5.7% | Added |
| Vanguard Portfolio Management LLC | 1,860,091 | $135.8M | 0.01% | +1,860,091 | New |
| Allspring Global Investments Holdings, LLC | 2,315,942 | $170.5M | 0.29% | −40,561−1.7% | Reduced |
| BlackRock, Inc. | 3,878,975 | $283.2M | 0.00% | +216,652+5.9% | Added |
| Westwood Holdings Group Inc. | 0 | $0 | 0.00% | −491,451−100.0% | Sold out |
| Medina Singh Partners, LLC | 0 | $0 | 0.00% | −378,769−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −159,200−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −103,935−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −42,228−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −34,278−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −26,664−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −26,000−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −22,159−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −17,622−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −10,049−100.0% | Sold out |
| Inceptionr LLC | 0 | $0 | 0.00% | −8,582−100.0% | Sold out |
| Vident Advisory, LLC | 0 | $0 | 0.00% | −8,503−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −7,847−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −3,632−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −3,042−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −2,960−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −2,817−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −662−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −600−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −129−100.0% | Sold out |
| TD Waterhouse Canada Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Salomon & Ludwin, LLC | 0 | $0 | 0.00% | −90−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −39−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −19−100.0% | Sold out |
| Cornerstone Planning Group LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Dunhill Financial, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | 0 | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| QSV Equity Investors LLC | – | – | – | – | Not filed |