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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,878,975 | $283.2M | 0.00% | +216,652+5.9% | Added |
| Allspring Global Investments Holdings, LLC | 2,315,942 | $170.5M | 0.29% | −40,561−1.7% | Reduced |
| Vanguard Portfolio Management LLC | 1,860,091 | $135.8M | 0.01% | +1,860,091 | New |
| Dimensional Fund Advisors LP | 1,242,089 | $90.7M | 0.02% | +66,967+5.7% | Added |
| Vanguard Capital Management LLC | 1,114,598 | $81.4M | 0.00% | +1,114,598 | New |
| State Street Corp | 964,335 | $70.4M | 0.00% | +15,297+1.6% | Added |
| Victory Capital Management Inc | 864,994 | $63.2M | 0.04% | −85,080−9.0% | Reduced |
| Nuveen, LLC | 643,248 | $47.0M | 0.01% | +140,645+28.0% | Added |
| Geode Capital Management, LLC | 630,592 | $46.1M | 0.00% | +21,372+3.5% | Added |
| Two Sigma Investments, LP | 593,039 | $43.3M | 0.04% | +433,525+271.8% | Added |
| UBS Group AG | 565,911 | $41.3M | 0.01% | +423,856+298.4% | Added |
| Goldman Sachs Group Inc | 492,011 | $35.9M | 0.00% | +7,043+1.5% | Added |
| Assenagon Asset Management S.A. | 490,884 | $35.8M | 0.06% | +312,680+175.5% | Added |
| JPMorgan Chase & Co | 426,050 | $31.2M | 0.00% | +120,175+39.3% | Added |
| Qube Research & Technologies Ltd | 406,624 | $29.7M | 0.04% | +86,120+26.9% | Added |
| Charles Schwab Investment Management Inc | 365,874 | $26.7M | 0.00% | −7,666−2.1% | Reduced |
| AQR Capital Management LLC | 312,065 | $22.8M | 0.01% | +43,914+16.4% | Added |
| Brown Advisory Inc | 296,465 | $21.6M | 0.04% | −9,512−3.1% | Reduced |
| Gendell Jeffrey L | 294,504 | $21.5M | 0.29% | +9,153+3.2% | Added |
| Bank of America Corp | 290,766 | $21.2M | 0.00% | −31,592−9.8% | Reduced |
| D. E. Shaw & Co., Inc. | 286,794 | $20.9M | 0.02% | −23,133−7.5% | Reduced |
| Northern Trust Corp | 284,239 | $20.8M | 0.00% | +9,550+3.5% | Added |
| Royce & Associates LP | 261,336 | $19.1M | 0.19% | −43,890−14.4% | Reduced |
| Morgan Stanley | 235,571 | $17.2M | 0.00% | −7,964−3.3% | Reduced |
| Western Standard LLC | 226,833 | $16.6M | 8.71% | −41,534−15.5% | Reduced |
| Citadel Advisors LLC | 220,883 | $16.1M | 0.01% | +148,189+203.9% | Added |
| SEI Investments Co | 174,121 | $12.7M | 0.01% | +70,419+67.9% | Added |
| Point72 Asset Management, L.P. | 166,794 | $12.2M | 0.02% | +71,019+74.2% | Added |
| Vanguard Fiduciary Trust Co | 160,752 | $11.7M | 0.00% | +160,752 | New |
| First Wilshire Securities Management Inc | 148,072 | $10.8M | 2.44% | +47,498+47.2% | Added |
| Janus Henderson Group PLC | 133,272 | $9.73M | 0.00% | −17,579−11.7% | Reduced |
| Bank of New York Mellon Corp | 131,291 | $9.59M | 0.00% | −6,537−4.7% | Reduced |
| HRT Financial LP | 125,055 | $9.13M | 0.02% | +8,123+6.9% | Added |
| Acadian Asset Management LLC | 122,552 | $8.94M | 0.01% | +108,393+765.5% | Added |
| Hotchkis & Wiley Capital Management LLC | 120,810 | $8.82M | 0.03% | −4,252−3.4% | Reduced |
| Principal Financial Group Inc | 120,477 | $8.80M | 0.00% | +2,370+2.0% | Added |
| Panagora Asset Management Inc | 119,675 | $8.74M | 0.03% | +37,577+45.8% | Added |
| Renaissance Technologies LLC | 118,900 | $8.68M | 0.01% | −1,400−1.2% | Reduced |
| Invesco Ltd. | 118,084 | $8.62M | 0.00% | +13,445+12.8% | Added |
| Voloridge Investment Management, LLC | 107,963 | $7.88M | 0.03% | −30,438−22.0% | Reduced |
| ZWJ Investment Counsel Inc | 103,787 | $7.58M | 0.27% | +9,252+9.8% | Added |
| Teacher Retirement System of Texas | 103,102 | $7.53M | 0.03% | +18,677+22.1% | Added |
| Jane Street Group, LLC | 94,506 | $6.90M | 0.01% | −14,455−13.3% | Reduced |
| ProShare Advisors LLC | 89,841 | $6.56M | 0.01% | +6,102+7.3% | Added |
| Public Sector Pension Investment Board | 88,694 | $6.48M | 0.02% | +2,980+3.5% | Added |
| Mutual of America Capital Management LLC | 87,463 | $6.39M | 0.07% | −458−0.5% | Reduced |
| Trexquant Investment LP | 78,370 | $5.72M | 0.04% | +32,297+70.1% | Added |
| Numerai GP LLC | 76,616 | $5.59M | 0.56% | −21,653−22.0% | Reduced |
| UBS Asset Management Americas Inc | 74,443 | $5.44M | 0.00% | −4,229−5.4% | Reduced |
| Russell Investments Group, Ltd. | 71,607 | $5.23M | 0.01% | +59,979+515.8% | Added |
| Rhumbline Advisers | 71,157 | $5.20M | 0.00% | +960+1.4% | Added |
| Leeward Investments, LLC - MA | 69,810 | $5.10M | 0.25% | −1,877−2.6% | Reduced |
| Deprince Race & Zollo Inc | 68,029 | $4.97M | 0.09% | +68,029 | New |
| Engineers Gate Manager LP | 64,682 | $4.72M | 0.06% | +14,820+29.7% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 61,669 | $4.50M | 0.01% | −6,380−9.4% | Reduced |
| Millennium Management LLC | 61,427 | $4.49M | 0.00% | −471,885−88.5% | Reduced |
| SG Americas Securities, LLC | 60,868 | $4.45M | 0.00% | −14,946−19.7% | Reduced |
| Legal & General Group Plc | 59,120 | $4.32M | 0.00% | −3,341−5.3% | Reduced |
| Ameriprise Financial Inc | 56,535 | $4.13M | 0.00% | −3,752−6.2% | Reduced |
| American Century Companies Inc | 55,234 | $4.03M | 0.00% | +918+1.7% | Added |
| FMR LLC | 51,805 | $3.78M | 0.00% | +14,884+40.3% | Added |
| Swiss National Bank | 49,003 | $3.58M | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 44,967 | $3.28M | 0.03% | −6,589−12.8% | Reduced |
| Atom Investors LP | 40,771 | $2.98M | 0.21% | +17,941+78.6% | Added |
| Ieq Capital, LLC | 39,960 | $2.92M | 0.01% | +186+0.5% | Added |
| BNP Paribas Arbitrage, SA | 37,967 | $2.77M | 0.00% | +23,962+171.1% | Added |
| Creative Planning | 37,635 | $2.75M | 0.00% | −7,058−15.8% | Reduced |
| XTX Topco Ltd | 36,292 | $2.65M | 0.05% | +26,555+272.7% | Added |
| PDT Partners, LLC | 34,576 | $2.52M | 0.15% | −8,300−19.4% | Reduced |
| Edgestream Partners, L.P. | 34,226 | $2.50M | 0.08% | −12,208−26.3% | Reduced |
| Marshall Wace, LLP | 33,526 | $2.45M | 0.00% | +24,298+263.3% | Added |
| Franklin Resources Inc | 33,485 | $2.45M | 0.00% | +4,974+17.4% | Added |
| Y-Intercept (Hong Kong) Ltd | 33,296 | $2.43M | 0.05% | +8,682+35.3% | Added |
| Penn Capital Management Co Inc | 33,286 | $2.43M | 0.19% | +33,286 | New |
| Connors Investor Services Inc | 33,095 | $2.42M | 0.22% | +570+1.8% | Added |
| Price T Rowe Associates Inc | 31,826 | $2.32M | 0.00% | +3,443+12.1% | Added |
| Ingalls & Snyder LLC | 28,927 | $2.11M | 0.07% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 28,227 | $2.06M | 0.01% | −2,087−6.9% | Reduced |
| Alliancebernstein L.P. | 26,509 | $2.03M | 0.00% | −414−1.5% | Reduced |
| California State Teachers Retirement System | 27,529 | $2.01M | 0.00% | +3,729+15.7% | Added |
| Moran Wealth Management, LLC | 27,031 | $1.97M | 0.06% | −15,004−35.7% | Reduced |
| Holocene Advisors, LP | 26,473 | $1.93M | 0.00% | +7,428+39.0% | Added |
| Schonfeld Strategic Advisors LLC | 26,250 | $1.92M | 0.02% | +8,573+48.5% | Added |
| Jump Financial, LLC | 26,200 | $1.91M | 0.03% | +3,900+17.5% | Added |
| Dark Forest Capital Management LP | 25,643 | $1.87M | 0.17% | −18,881−42.4% | Reduced |
| HSBC Holdings PLC | 25,351 | $1.85M | 0.00% | +10,504+70.7% | Added |
| Prudential Financial Inc | 25,269 | $1.85M | 0.00% | +1,805+7.7% | Added |
| Huber Capital Management LLC | 25,148 | $1.84M | 0.28% | +2,600+11.5% | Added |
| Voya Investment Management LLC | 25,093 | $1.83M | 0.00% | −171−0.7% | Reduced |
| Brevan Howard Capital Management LP | 24,436 | $1.78M | 0.02% | +10,974+81.5% | Added |
| CM Management, LLC | 24,000 | $1.75M | 1.47% | +4,000+20.0% | Added |
| Citigroup Inc | 23,792 | $1.74M | 0.00% | +6,079+34.3% | Added |
| KLP Kapitalforvaltning AS | 23,300 | $1.70M | 0.01% | +18,000+339.6% | Added |
| Deutsche Bank AG | 22,750 | $1.66M | 0.00% | +3,085+15.7% | Added |
| Cerity Partners LLC | 22,513 | $1.64M | 0.00% | +3,204+16.6% | Added |
| Centiva Capital, LP | 21,641 | $1.58M | 0.07% | +21,641 | New |
| Wedge Capital Management L L P | 21,473 | $1.57M | 0.03% | +1,774+9.0% | Added |
| Barclays PLC | 21,189 | $1.55M | 0.00% | −24,659−53.8% | Reduced |
| Gsa Capital Partners LLP | 21,100 | $1.54M | 0.10% | +3,678+21.1% | Added |
| Capital Fund Management S.A. | 20,834 | $1.52M | 0.01% | −1,043−4.8% | Reduced |