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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.

Q4 2025 vs. Q3 2025

How the institutions holding Innospec Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of IOSP: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders2666261+1
Shares24.0M158.1K24.3M+496.4K (+2.1%)
Value$1.85B$12.2M$1.86B+$23.6M (+1.3%)

6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (31)

Institutions that held Innospec Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to IOSP in Q4 2025
InstitutionSharesValue% of portfolio
Norges Bank139,200$10.7M0.00%
First Wilshire Securities Management Inc100,574$7.70M1.94%
Jain Global LLC22,159$1.70M0.02%
Legato Capital Management LLC10,049$769.1K0.07%
XTX Topco Ltd9,737$745.3K0.02%
Marshall Wace, LLP9,228$706.3K0.00%
Vident Advisory, LLC8,503$650.8K0.01%
Skopos Labs, Inc.7,847$616.5K0.03%
Arrowstreet Capital, Limited Partnership6,238$477.5K0.00%
Quadrature Capital Ltd5,955$455.8K0.00%
Ethic Inc.5,351$409.6K0.01%
Cetera Investment Advisers4,859$371.9K0.00%
Profund Advisors LLC3,042$232.8K0.01%
Toroso Investments, LLC2,834$216.9K0.00%
PharVision Advisers, LLC2,817$215.6K0.11%
Eurizon Capital SGR S.p.A.804$62.8K0.00%
CDKV Holdings LLC400$30.6K0.03%
Pinnacle Wealth Planning Services, Inc.246$18.8K0.00%
Global Retirement Partners, LLC233$17.8K0.00%
Zions Bancorporation, National Association178$13.6K0.00%
Los Angeles Capital Management LLC129$9.43K0.00%
Massmutual Trust Co FSB120$9.19K0.00%
TD Waterhouse Canada Inc.100$7.65K0.00%
Basecamp Wealth Advisors LLC43$3.29K0.00%
SageView Advisory Group, LLC40$3.06K0.00%
Kilter Group LLC16$1.23K0.00%
Cornerstone Planning Group LLC8$6340.00%
CIBC Private Wealth Group, LLC6$4590.00%
Keating Financial Advisory Services, Inc.1$770.00%
Dunhill Financial, LLC1$400.00%
Torren Management, LLC0$170.00%

Sold out (30)

Institutions that held Innospec Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Not filed for Q4 2025 yet (6)

Institutions that held Innospec Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IOSP in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Cubist Systematic Strategies, LLC154,165$11.9M
CIBC Bancorp USA Inc.2,679$206.7K
Point72 (DIFC) Ltd765$59.0K
Shell Asset Management Co425$33.0K
Point72 Asia (Singapore) Pte. Ltd.39$3.01K
Hemington Wealth Management22$1.00K