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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.

13F holders, Q4 2025

Institutional positions in Innospec Inc. as of Dec 31, 2025. 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
261
+1 vs. Q3 2025
Shares held
24.3M
+496.4K (+2.1%) vs. Q3 2025
Total value
$1.86B
+$23.6M (+1.3%) vs. Q3 2025
New holders
31
104 more added
Sold out
30
92 more reduced

6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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.

Institutional holdersQ4 2025: 261 institutions
Q1 2021: 180 institutionsQ2 2021: 180 institutionsQ3 2021: 188 institutionsQ4 2021: 184 institutionsQ1 2022: 188 institutionsQ2 2022: 199 institutionsQ3 2022: 193 institutionsQ4 2022: 223 institutionsQ1 2023: 219 institutionsQ2 2023: 205 institutionsQ3 2023: 212 institutionsQ4 2023: 223 institutionsQ1 2024: 239 institutionsQ2 2024: 266 institutionsQ3 2024: 261 institutionsQ4 2024: 262 institutionsQ1 2025: 272 institutionsQ2 2025: 262 institutionsQ3 2025: 266 institutionsQ4 2025: 261 institutionsQ1 2026: 266 institutionsQ2 2026: 281 institutions
Value heldQ4 2025: $1.86B
Q1 2021: $2.42BQ2 2021: $2.12BQ3 2021: $1.97BQ4 2021: $2.14BQ1 2022: $2.20BQ2 2022: $2.29BQ3 2022: $2.03BQ4 2022: $2.44BQ1 2023: $2.45BQ2 2023: $2.39BQ3 2023: $2.44BQ4 2023: $2.96BQ1 2024: $3.10BQ2 2024: $2.96BQ3 2024: $2.73BQ4 2024: $2.66BQ1 2025: $2.29BQ2 2025: $2.03BQ3 2025: $1.85BQ4 2025: $1.86BQ1 2026: $1.82BQ2 2026: $2.00B
Institutions holding IOSP and their total value by quarter
QuarterHoldersValue
Q2 2026281$2.00B
Q1 2026266$1.82B
Q4 2025261$1.86B
Q3 2025266$1.85B
Q2 2025262$2.03B
Q1 2025272$2.29B
Q4 2024262$2.66B
Q3 2024261$2.73B
Q2 2024266$2.96B
Q1 2024239$3.10B
Q4 2023223$2.96B
Q3 2023212$2.44B
Q2 2023205$2.39B
Q1 2023219$2.45B
Q4 2022223$2.44B
Q3 2022193$2.03B
Q2 2022199$2.29B
Q1 2022188$2.20B
Q4 2021184$2.14B
Q3 2021188$1.97B
Q2 2021180$2.12B
Q1 2021180$2.42B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Innospec Inc.; share changes are against Q3 2025.

Institutions holding IOSP in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Hantz Financial Services, Inc.575$44.0K0.00%+420+271.0%Added
Essential Partners LLC477$36.5K0.01%−424−47.1%Reduced
Covestor Ltd461$35.0K0.02%−2−0.4%Reduced
BNP PARIBAS ASSET MANAGEMENT Holding S.A.457$35.0K0.00%+150+48.9%Added
Versant Capital Management, Inc433$33.1K0.00%−112−20.6%Reduced
CDKV Holdings LLC400$30.6K0.03%+400New
TSFG, LLC370$28.0K0.00%00.0%Unchanged
Advisor Group Holdings, Inc.326$25.0K0.00%+22+7.2%Added
Parallel Advisors, LLC274$21.0K0.00%+150+121.0%Added
Quadrant Capital Group LLC264$20.2K0.00%+208+371.4%Added
Pinnacle Wealth Planning Services, Inc.246$18.8K0.00%+246New
Jones Financial Companies LLLP239$18.3K0.00%+2+0.8%Added
Global Retirement Partners, LLC233$17.8K0.00%+233New
Fifth Third Bancorp231$17.7K0.00%+213+1,183.3%Added
US Bancorp225$17.2K0.00%−146−39.4%Reduced
Umb Bank N A220$16.8K0.00%+160+266.7%Added
Crews Bank & Trust200$15.3K0.00%00.0%Unchanged
Farther Finance Advisors, LLC195$14.9K0.00%+57+41.3%Added
Quarry LP190$14.5K0.00%+69+57.0%Added
Zions Bancorporation, National Association178$13.6K0.00%+178New
Barrow Hanley Mewhinney & Strauss LLC157$12.0K0.00%00.0%Unchanged
Rothschild Investment LLC151$11.6K0.00%+117+344.1%Added
IFP Advisors, Inc141$10.8K0.00%+85+151.8%Added
Los Angeles Capital Management LLC129$9.43K0.00%+129New
Massmutual Trust Co FSB120$9.19K0.00%+120New
GAMMA Investing LLC114$8.73K0.00%+39+52.0%Added
SRS Capital Advisors, Inc.112$8.57K0.00%−3,499−96.9%Reduced
STRS Ohio100$7.65K0.00%00.0%Unchanged
TD Waterhouse Canada Inc.100$7.65K0.00%+100New
Salomon & Ludwin, LLC90$7.04K0.00%+42+87.5%Added
Harbor Capital Advisors, Inc.86$7.00K0.00%−1−1.1%Reduced
Aster Capital Management (DIFC) Ltd71$5.43K0.00%−78−52.3%Reduced
Bessemer Group Inc71$5.00K0.00%00.0%Unchanged
Private Wealth Asset Management, LLC63$4.82K0.00%00.0%Unchanged
Basecamp Wealth Advisors LLC43$3.29K0.00%+43New
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.42$3.20K0.00%00.0%Unchanged
SageView Advisory Group, LLC40$3.06K0.00%+40New
Parkside Financial Bank & Trust39$2.99K0.00%+32+457.1%Added
Root Financial Partners, LLC39$2.98K0.00%−6−13.3%Reduced
True Wealth Design, LLC38$2.91K0.00%−39−50.6%Reduced
Bell Investment Advisors, Inc19$1.46K0.00%+13+216.7%Added
Farmers & Merchants Investments Inc18$1.38K0.00%00.0%Unchanged
Kilter Group LLC16$1.23K0.00%+16New
SJS Investment Consulting Inc.12$9190.00%+10+500.0%Added
WPG Advisers, LLC10$7650.00%00.0%Unchanged
First Horizon Corp9$6890.00%00.0%Unchanged
Cornerstone Planning Group LLC8$6340.00%+8New
Clearstead Advisors, LLC8$6130.00%−177−95.7%Reduced
Harbour Investments, Inc.8$6120.00%−59−88.1%Reduced
CIBC Private Wealth Group, LLC6$4590.00%+6New
JFS Wealth Advisors, LLC5$3830.00%−3−37.5%Reduced
Fortitude Family Office, LLC4$3060.00%−5−55.6%Reduced
Abound Wealth Management2$1540.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.1$770.00%−4−80.0%Reduced
Rialto Wealth Management, LLC1$770.00%00.0%Unchanged
SBI Securities Co., Ltd.1$770.00%00.0%Unchanged
HFM Investment Advisors, LLC1$770.00%00.0%Unchanged
Keating Financial Advisory Services, Inc.1$770.00%+1New
Bay Harbor Wealth Management, LLC1$760.00%−1−50.0%Reduced
Dunhill Financial, LLC1$400.00%+1New
Torren Management, LLC0$170.00%0New
Bahl & Gaynor Inc0$00.00%−27,306−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−16,274−100.0%Sold out
Squarepoint Ops LLC0$00.00%−12,216−100.0%Sold out
CBOE Vest Financial, LLC0$00.00%−11,210−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−11,000−100.0%Sold out
Semanteon Capital Management, LP0$00.00%−7,324−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−6,359−100.0%Sold out
Tredje AP-fonden0$00.00%−5,478−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−4,215−100.0%Sold out
Bailard, Inc.0$00.00%−4,200−100.0%Sold out
Legacy Wealth Asset Management, LLC0$00.00%−4,063−100.0%Sold out
DRW Securities, LLC0$00.00%−3,929−100.0%Sold out
Petrus Trust Company, LTA0$00.00%−3,738−100.0%Sold out
Twinbeech Capital LP0$00.00%−3,656−100.0%Sold out
MQS Management LLC0$00.00%−2,954−100.0%Sold out
State of Wisconsin Investment Board0$00.00%−2,920−100.0%Sold out
Farringdon Capital, Ltd.0$00.00%−2,746−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−2,640−100.0%Sold out
Vestcor Inc0$00.00%−813−100.0%Sold out
Westside Investment Management, Inc.0$00.00%−199−100.0%Sold out
Optiver Holding B.V.0$00.00%−128−100.0%Sold out
Rise Advisors, LLC0$00.00%−103−100.0%Sold out
High Note Wealth, LLC0$00.00%−52−100.0%Sold out
Private Wealth Management Group, LLC0$00.00%−20−100.0%Sold out
Bare Financial Services, Inc0$00.00%−12−100.0%Sold out
Sunbelt Securities, Inc.0$00.00%−11−100.0%Sold out
Wealthspire Advisors, LLC0$00.00%−8−100.0%Sold out
Ronald Blue Trust, Inc.0$00.00%−2−100.0%Sold out
Simplex Trading, LLC0$00.00%−4−100.0%Sold out
Cloud Capital Management, LLC0$00.00%−4−100.0%Sold out
Cubist Systematic Strategies, LLC––––Not filed
CIBC Bancorp USA Inc.––––Not filed
Point72 (DIFC) Ltd––––Not filed
Shell Asset Management Co––––Not filed
Point72 Asia (Singapore) Pte. Ltd.––––Not filed
Hemington Wealth Management––––Not filed