InnospecIOSP

13F holders, Q4 2025 (December 31)
260holders −6
24new positions
29sold out
6famous investors
$76.52avg. 13F price*

At the end of Q4 2025, 260 institutions reported holding Innospec Inc. (IOSP) in their 13F filings, down 6 from Q3 2025. 24 opened new positions and 29 sold out. The largest holders were BlackRock, Inc. ($280.3M), Vanguard Group Inc. ($238.9M) and Allspring Global Investments Holdings, LLC ($179.8M). 6 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).

Company
Innospec Inc.
CUSIP
45768S105
Latest filing quarter
Q2 2026

History

Number of 13F holders

0100200300 Q1 2024: 237Q1 2024Q2 2024: 265Q2 2024Q3 2024: 260Q3 2024Q4 2024: 262Q4 2024Q1 2025: 272Q1 2025Q2 2025: 262Q2 2025Q3 2025: 266Q3 2025Q4 2025: 260Q4 2025Q1 2026: 266Q1 2026Q2 2026: 281Q2 2026

Total Exit/New Position Q3 2025 → Q4 2025

InstitutionsTotal Value
New Positions24$15.3M
Exits29$9.7M

All 13F filers, Q3 2025 → Q4 2025: 2,128,780 shares bought and 1,765,508 shares sold, net +363,272 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 260 holders

BlackRock, Inc. 0.00% Add +0.8% 3,662,323 $280.3M
Vanguard Group Inc. 0.00% Reduce -0.7% 3,121,151 $238.9M
Allspring Global Investments Holdings, LLC 0.29% Reduce -1.5% 2,356,503 $179.8M
Dimensional Fund Advisors LP 0.02% Add +0.7% 1,175,122 $89.9M
Victory Capital Management Inc. 0.04% Add +13.7% 950,074 $72.7M
State Street Corp. 0.00% Add +2.1% 949,038 $72.6M
Geode Capital Management, LLC 0.00% Reduce -0.8% 609,220 $46.6M
Millennium Management 0.03% Add +10.8% 533,312 $40.8M
Nuveen, LLC 0.01% Add +22.2% 502,603 $38.5M
Westwood Holdings Group Inc. 0.31% Add +9.7% 491,451 $37.6M
Goldman Sachs Group Inc. 0.01% Add +71.6% 484,968 $37.1M
Medina Value Partners, LLC 6.77% Add +60.5% 378,769 $29.0M
Charles Schwab Investment Management Inc. 0.00% Add +3.6% 373,540 $28.6M
Bank of America Corp. 0.00% Reduce -14.1% 322,358 $24.7M
Qube Research & Technologies Ltd 0.04% Reduce -9.5% 320,504 $24.5M
D. E. Shaw & Co. 0.02% Add +13.2% 309,927 $23.7M
Brown Advisory Inc. 0.03% Reduce -12.6% 305,977 $23.4M
JPMorgan Chase & Co. 0.00% Reduce -4.7% 305,875 $23.4M
Royce & Associates LP 0.24% Reduce -38.0% 305,226 $23.4M
Gendell Jeffrey L 0.38% Add +63.1% 285,351 $21.8M
Northern Trust Corp. 0.00% Reduce -8.2% 274,689 $21.0M
Western Standard LLC 9.47% Add +894.0% 268,367 $20.5M
AQR Capital Management 0.01% Add +48.0% 268,151 $20.5M
Morgan Stanley 0.00% Reduce -4.0% 243,535 $18.6M
Assenagon Asset Management S.A. 0.02% Add +37.7% 178,204 $13.6M
Two Sigma Investments, LP 0.02% Add +7.6% 159,514 $12.2M
Two Sigma Advisers, LP 0.02% Add +0.6% 159,200 $12.2M
Janus Henderson Group PLC 0.01% Reduce -41.5% 150,851 $11.5M
UBS Group AG 0.00% Reduce -13.9% 142,055 $10.9M
Norges Bank 0.00% — 139,200 $10.7M
Voloridge Investment Management, LLC 0.04% Add +9.8% 138,401 $10.6M
Bank of New York Mellon Corp 0.00% Reduce -36.0% 137,828 $10.5M
Hotchkis & Wiley Capital Management LLC 0.03% Add +12.2% 125,062 $9.6M
Renaissance Technologies 0.01% Reduce -17.9% 120,300 $9.2M
Principal Financial Group Inc. 0.00% Reduce -1.5% 118,107 $9.0M
HRT Financial LP 0.03% Add +30.6% 116,932 $8.9M
Jane Street Group, LLC 0.01% Add +17.5% 108,961 $8.3M
Invesco Ltd. 0.00% Add +29.4% 104,639 $8.0M
Walleye Capital LLC 0.05% Reduce -31.1% 103,935 $8.0M
Sei Investments Co. 0.01% Add +55.9% 103,702 $7.9M
First Wilshire Securities Management Inc. 1.94% New 100,574 $7.7M
Numerai GP LLC 0.91% Add +20.5% 98,269 $7.5M
Point72 Asset Management 0.01% Add +712.1% 95,775 $7.3M
ZWJ Investment Counsel Inc. 0.26% Add +110.9% 94,535 $7.2M
Mutual of America Capital Management LLC 0.07% Add +16.1% 87,921 $6.7M
Public Sector Pension Investment Board 0.02% Reduce -11.5% 85,714 $6.6M
Teacher Retirement System of Texas 0.02% Add +35.3% 84,425 $6.5M
ProShare Advisors LLC 0.01% Add +8.4% 83,739 $6.4M
Panagora Asset Management Inc. 0.02% Add +3.3% 82,098 $6.3M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Add +1.7% 78,672 $6.0M
SG Americas Securities, LLC 0.01% Add +291.0% 75,814 $5.8M
Citadel Advisors 0.00% Reduce -12.8% 72,694 $5.6M
Leeward Investments, LLC - MA 0.28% Reduce -0.6% 71,687 $5.5M
Rhumbline Advisers 0.00% Reduce -3.2% 70,197 $5.4M
Healthcare of Ontario Pension Plan Trust Fund 0.01% Add +74.6% 68,049 $5.2M
Legal & General Group Plc 0.00% Reduce -4.2% 62,461 $4.8M
Ameriprise Financial Inc. 0.00% Add +0.5% 60,287 $4.6M
American Century Companies Inc. 0.00% Reduce -13.4% 54,316 $4.2M
Intech Investment Management LLC 0.04% Add +139.4% 51,556 $3.9M
Engineers Gate Manager LP 0.05% Add +22.5% 49,862 $3.8M
Swiss National Bank 0.00% Add +1.2% 49,003 $3.8M
Edgestream Partners, L.P. 0.10% Add +11.8% 46,434 $3.6M
Trexquant Investment LP 0.03% Add +79.5% 46,073 $3.5M
Barclays PLC 0.00% Reduce -1.1% 45,848 $3.5M
Creative Planning 0.00% Add +227.9% 44,693 $3.4M
Dark Forest Capital Management LP 0.16% Add +31.7% 44,524 $3.4M
PDT Partners, LLC 0.21% No change 42,876 $3.3M
AlphaQuest LLC 0.18% Reduce -6.5% 42,228 $3.2M
Moran Wealth Management, LLC 0.10% Reduce -5.2% 42,035 $3.2M
Ieq Capital, LLC 0.01% Add +50.7% 39,774 $3.0M
FMR LLC 0.00% Add +3570.1% 36,921 $2.8M
Wells Fargo & Company 0.00% Add +3.5% 35,091 $2.7M
Algert Global LLC 0.04% Reduce -1.3% 34,278 $2.6M
Connors Investor Services Inc. 0.21% Reduce -3.4% 32,525 $2.5M
State of New Jersey Common Pension Fund D 0.01% Add +19.7% 30,314 $2.3M
Ingalls & Snyder LLC 0.08% No change 28,927 $2.2M
Franklin Resources Inc. 0.00% Add +2.3% 28,511 $2.2M
T. Rowe Price Associates Inc. 0.00% Add +21.5% 28,383 $2.2M
Alliancebernstein L.P. 0.00% Reduce -1.1% 26,923 $2.1M
Verition Fund Management LLC 0.01% Reduce -37.3% 26,664 $2.0M
Canada Pension Plan Investment Board 0.00% No change 26,000 $2.0M
Voya Investment Management LLC 0.00% Reduce -37.2% 25,264 $1.9M
Y-Intercept (Hong Kong) Ltd 0.04% Reduce -18.4% 24,614 $1.9M
California State Teachers Retirement System 0.00% Add +3.2% 23,800 $1.8M
Prudential Financial Inc. 0.00% Reduce -6.7% 23,464 $1.8M
Atom Investors LP 0.14% Add +566.6% 22,830 $1.7M
Huber Capital Management LLC 0.25% No change 22,548 $1.7M
Jump Financial, LLC 0.02% Reduce -20.0% 22,300 $1.7M
Jain Global LLC 0.02% New 22,159 $1.7M
Capital Fund Management S.A. 0.02% Add +73.9% 21,877 $1.7M
CANADA LIFE ASSURANCE Co 0.00% Reduce -28.2% 21,279 $1.6M
Public Employees Retirement System of Ohio 0.00% Add +16.2% 20,136 $1.5M
CM Management, LLC 1.29% Add +66.7% 20,000 $1.5M
Wedge Capital Management L L P 0.03% Add +20.5% 19,699 $1.5M
Deutsche Bank AG 0.00% Reduce -52.1% 19,665 $1.5M
Cerity Partners LLC 0.00% Reduce -8.2% 19,309 $1.5M
Holocene Advisors, LP 0.00% Reduce -22.4% 19,045 $1.5M
Citigroup Inc. 0.00% Reduce -20.4% 17,713 $1.4M
Schonfeld Strategic Advisors LLC 0.01% Reduce -30.0% 17,677 $1.4M
ExodusPoint Capital Management, LP 0.01% Reduce -63.7% 17,622 $1.3M
Gsa Capital Partners LLP 0.11% Reduce -38.4% 17,422 $1.3M
Thrivent Financial for Lutherans 0.00% Reduce -5.0% 17,026 $1.3M
Mariner, LLC 0.00% Add +182.0% 15,683 $1.2M
Entropy Technologies, LP 0.06% Add +63.2% 14,979 $1.1M
HSBC Holdings PLC 0.00% Reduce -1.2% 14,847 $1.1M
MetLife Investment Management, LLC 0.01% Reduce -4.3% 14,256 $1.1M
Acadian Asset Management LLC 0.00% Reduce -48.2% 14,159 $1.1M
BNP Paribas Financial Markets 0.00% Reduce -73.1% 14,005 $1.1M
State of Alaska, Department of Revenue 0.01% Add +0.9% 13,747 $1.1M
Freestone Grove Partners LP 0.01% Add +45.3% 13,475 $1.0M
Brevan Howard Capital Management LP 0.02% Reduce -26.0% 13,462 $1.0M
Illinois Municipal Retirement Fund 0.01% Reduce -7.4% 12,767 $977K
First Trust Advisors LP 0.00% Reduce -98.1% 12,276 $940K
Round Hill Asset Management 0.58% No change 11,974 $916K
Russell Investments Group, Ltd. 0.00% Add +63.5% 11,628 $890K
Jacobs Levy Equity Management, Inc. 0.00% Reduce -11.2% 11,622 $890K
Manufacturers Life Insurance Company, The 0.00% Reduce -6.3% 11,594 $887K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Reduce -1.0% 11,555 $884K
Louisiana State Employees Retirement System 0.01% No change 11,400 $873K
Linden Thomas Advisory Services, LLC 0.09% Reduce -3.5% 11,361 $870K
Capstone Investment Advisors, LLC 0.01% Add +67.1% 11,352 $869K
Comerica Bank 0.00% Reduce -5.1% 11,236 $860K
State of Tennessee, Department of Treasury 0.00% Reduce -30.2% 10,163 $831K
QSV Equity Investors LLC 1.21% Reduce -12.1% 10,694 $819K
EntryPoint Capital, LLC 0.32% No change 10,685 $818K
Cwm, LLC 0.00% Add +2.8% 10,452 $800K
Legato Capital Management LLC 0.07% New 10,049 $769K
James Investment Research, Inc. 0.08% No change 9,949 $761K
XTX Topco Ltd 0.02% New 9,737 $745K
Aquatic Capital Management LLC 0.02% Add +10.3% 9,659 $739K
Wealth Enhancement Advisory Services, LLC 0.00% Add +25.8% 9,223 $725K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Add +42.4% 9,465 $724K
Marshall Wace, LLP 0.00% New 9,228 $706K
New York State Common Retirement Fund 0.00% No change 8,911 $682K
Inceptionr LLC 0.18% Add +162.1% 8,582 $657K
Vident Advisory, LLC 0.01% New 8,503 $651K
Brooklyn Investment Group 0.03% New 7,847 $616K
New York State Teachers Retirement System 0.00% No change 7,962 $609K
Mercer Global Advisors Inc. 0.00% Add +19.4% 7,535 $577K
Quantinno Capital Management LP 0.00% Reduce -25.6% 7,297 $559K
Amalgamated Bank 0.00% Reduce -0.1% 7,215 $552K
Police & Firemen's Retirement System of New Jersey 0.00% Add +0.0% 6,951 $532K
Yousif Capital Management, LLC 0.01% Reduce -12.8% 6,713 $532K
Arizona State Retirement System 0.00% Reduce -6.6% 6,885 $527K
State Board of Administration of Florida Retirement System 0.00% No change 6,727 $515K
NewEdge Advisors, LLC 0.00% Add +21.4% 6,511 $498K
Arrowstreet Capital, Limited Partnership 0.00% New 6,238 $477K
Teachers Retirement System of the State of Kentucky 0.00% Reduce -12.0% 6,230 $476K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% Reduce -3.0% 6,134 $469K
Susquehanna International Group, LLP 0.00% Reduce -36.7% 6,123 $469K
Inspire Investing, LLC 0.04% Add +3.6% 6,086 $466K
Keybank National Association 0.00% Add +30.0% 6,001 $459K
Quadrature Capital Ltd 0.00% New 5,955 $456K
R Squared Ltd 0.21% Add +0.7% 5,883 $450K
Man Group plc 0.00% Add +16.3% 5,717 $438K
Oregon Public Employees Retirement Fund 0.01% No change 5,631 $431K
Guggenheim Capital LLC 0.00% Add +0.4% 5,589 $428K
Ethic Inc. 0.01% New 5,351 $410K
KLP Kapitalforvaltning As 0.00% Add +6.0% 5,300 $406K
Amundi 0.00% Add +15.6% 5,189 $397K
LPL Financial LLC 0.00% Reduce -25.8% 5,077 $389K
Bell & Brown Wealth Advisors, LLC 0.12% Reduce -0.0% 4,966 $380K
Cetera Investment Advisers 0.00% New 4,859 $372K
Hudson Edge Investment Partners Inc. 0.05% Reduce -6.0% 4,316 $330K
Royal Bank of Canada 0.00% Reduce -9.3% 4,176 $319K
Quantbot Technologies LP 0.01% Reduce -75.8% 4,103 $314K
Pictet Asset Management Holding SA 0.00% No change 4,052 $310K
Diversified Trust Co. 0.01% Add +0.7% 3,823 $293K
Oxford Asset Management LLP 0.10% Reduce -30.6% 3,632 $278K
Maryland State Retirement & Pension System 0.01% Add +1.2% 3,612 $276K
Envestnet Asset Management Inc. 0.00% Reduce -74.4% 3,461 $265K
Polymer Capital Management (US) LLC 0.03% Reduce -29.6% 3,458 $265K
Meeder Asset Management Inc. 0.01% Reduce -45.1% 3,425 $262K
Captrust Financial Advisors 0.00% Add +13.7% 3,360 $257K
Profund Advisors LLC 0.01% New 3,042 $233K
Public Employees Retirement Association of Colorado 0.00% No change 3,018 $231K
Mackenzie Financial Corp. 0.00% Reduce -6.2% 2,960 $231K
Aigen Investment Management, LP 0.05% Reduce -55.8% 2,980 $228K
Tidal Investments LLC 0.00% New 2,834 $217K
PharVision Advisers, LLC 0.11% New 2,817 $216K
PNC Financial Services Group, Inc. 0.00% Add +41.5% 2,361 $181K
Tower Research Capital LLC (TRC) 0.00% Reduce -7.4% 2,330 $178K
State of Wyoming 0.02% Add +1170.9% 2,186 $167K
Ameritas Investment Partners, Inc. 0.00% No change 2,099 $161K
Nisa Investment Advisors, LLC 0.00% Add +0.9% 1,934 $148K
Smartleaf Asset Management LLC 0.00% Add +26.4% 1,665 $130K
Sterling Capital Management LLC 0.00% Reduce -17.4% 1,367 $105K
Ensign Peak Advisors, Inc 0.00% Reduce -75.9% 1,209 $93K
Signaturefd, LLC 0.00% Add +65.5% 993 $76K
Murphy & Mullick Capital Management Corp 0.05% No change 962 $74K
MAI Capital Management 0.00% Add +6.2% 956 $73K
HM Payson & Co. 0.00% No change 909 $70K
DekaBank Deutsche Girozentrale 0.00% No change 515 $68K
Allworth Financial LP 0.00% Add +49.7% 880 $67K
KBC Group NV 0.00% No change 860 $66K
Eurizon Capital SGR S.p.A. 0.00% — 804 $63K
Rockefeller Capital Management L.P. 0.00% Add +125.4% 728 $56K
EverSource Wealth Advisors, LLC 0.00% Add +15.2% 683 $52K
Caitong International Asset Management Co., Ltd 0.01% Add +316.4% 662 $51K
Danske Bank A/S 0.00% No change 600 $46K
Hantz Financial Services, Inc. 0.00% Add +271.0% 575 $44K
Essential Partners LLC 0.01% Reduce -47.1% 477 $37K
Covestor Ltd 0.02% Reduce -0.4% 461 $35K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% Add +48.9% 457 $35K
Versant Capital Management, Inc 0.00% Reduce -20.6% 433 $33K
CDKV Holdings LLC 0.03% — 400 $31K
Tsfg, LLC 0.00% No change 370 $28K
Osaic Holdings, Inc. 0.00% Add +7.2% 326 $25K
Parallel Advisors, LLC 0.00% Add +121.0% 274 $21K
Quadrant Capital Group LLC 0.00% Add +371.4% 264 $20K
Pinnacle Wealth Planning Services, Inc. 0.00% New 246 $19K
Jones Financial Companies LLLP 0.00% Add +0.8% 239 $18K
Global Retirement Partners, LLC 0.00% New 233 $18K
Fifth Third Bancorp 0.00% Add +1183.3% 231 $18K
US Bancorp \de 0.00% Reduce -39.4% 225 $17K
UMB Bank, n.a. 0.00% Add +266.7% 220 $17K
Crews Bank & Trust 0.00% No change 200 $15K
Farther Finance Advisors, LLC 0.00% Add +41.3% 195 $15K
Quarry LP 0.00% Add +57.0% 190 $15K
Zions Bancorporation, National Association 0.00% New 178 $14K
Barrow Hanley Mewhinney & Strauss LLC 0.00% No change 157 $12K
Rothschild Investment LLC 0.00% Add +344.1% 151 $12K
IFP Advisors, Inc 0.00% Add +151.8% 141 $11K
Los Angeles Capital Management LLC 0.00% New 129 $9K
MassMutual Private Wealth & Trust, FSB 0.00% Add +0.0% 120 $9K
GAMMA Investing LLC 0.00% Add +52.0% 114 $9K
Arax Advisory Partners 0.00% Reduce -96.9% 112 $9K
STRS Ohio 0.00% No change 100 $8K
TD Waterhouse Canada Inc. 0.00% New 100 $8K
Salomon & Ludwin, LLC 0.00% Add +87.5% 90 $7K
Harbor Capital Advisors, Inc. 0.00% Reduce -1.1% 86 $7K
Aster Capital Management (DIFC) Ltd 0.00% Reduce -52.4% 71 $5K
Bessemer Group Inc. 0.00% No change 71 $5K
Private Wealth Asset Management, LLC 0.00% No change 63 $5K
Basecamp Wealth Advisors LLC 0.00% — 43 $3K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% No change 42 $3K
SageView Advisory Group, LLC 0.00% New 40 $3K
Parkside Financial Bank & Trust 0.00% Add +457.1% 39 $3K
Root Financial Partners, LLC 0.00% Reduce -13.3% 39 $3K
True Wealth Design, LLC 0.00% Reduce -50.6% 38 $3K
Bell Investment Advisors, Inc 0.00% Add +216.7% 19 $1K
Farmers & Merchants Investments Inc. 0.00% No change 18 $1K
Kilter Group LLC 0.00% New 16 $1K
SJS Investment Consulting Inc. 0.00% Add +500.0% 12 $919
WPG Advisers, LLC 0.00% No change 10 $765
First Horizon Corp. 0.00% No change 9 $689
Cornerstone Planning Group LLC 0.00% New 8 $634
Clearstead Advisors, LLC 0.00% Reduce -95.7% 8 $613
Harbour Investments, Inc. 0.00% Reduce -88.1% 8 $612
CIBC Private Wealth Group LLC 0.00% New 6 $459
JFS Wealth Advisors, LLC 0.00% Reduce -37.5% 5 $383
Fortitude Family Office, LLC 0.00% Reduce -55.6% 4 $306
Abound Wealth Management 0.00% No change 2 $154
SBI Securities Co., Ltd. 0.00% No change 1 $77
DiNuzzo Private Wealth, Inc. 0.00% Reduce -80.0% 1 $77
Rialto Wealth Management, LLC 0.00% No change 1 $77
HFM Investment Advisors, LLC 0.00% No change 1 $77
Keating Financial Advisory Services, Inc. 0.00% — 1 $77
Bay Harbor Wealth Management, LLC 0.00% Reduce -50.0% 1 $76
Dunhill Financial, LLC 0.00% New 1 $40

"% of holder's portfolio" is IOSP's weight in each manager's 13F, not the share of Innospec Inc. the manager owns.