INNOSPEC INC

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IOSP·45768S105·US·Common Stock·Basic Materials - Specialty Chemicals-13D/G

IOSP (INNOSPEC INC) is held by 144 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($356.6M), Allspring Global Investments Holdings, LLC ($154.7M), VANGUARD PORTFOLIO MANAGEMENT LLC ($153.4M). Net institutional sentiment: Mixed.

144

Holders

(11 Elite)

$1.8B

Total Value

51% (143)

Consensus

73 buying - 70 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)85

Insider (Form 4)76

Activist (13D/13G)25

Congressional (STOCK Act)47

Holder Quality

86

★★★★★

Elite

56

★★★★

Strong

14

★★★

Solid

52

★★

Below

89

★

Weak

Held by 144 funds

11 elite

Who's Trading

Source dates: Price Aug 27, 2026 · Insiders Mar 6, 2026 · Activists Jul 31, 2026 · Congress none

ActivistAllspring Global Investments Holdings, LLC7.7%Jul 31, 2026

ActivistDimensional Fund Advisors LP5.3%Jul 14, 2026

ActivistVAVanguard Capital Management5.2%Apr 30, 2026

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Top Holders

Top Holders (144)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	4.4M(+12.9%)	$356.6M	0.0%	-7.01%	35
Allspring Global Investments Holdings, LLC	Decreased	1.9M(-18.3%)	$154.7M	0.2%	+10.29%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	1.9M(+1.3%)	$153.4M	0.0%	+25.15%	31
DIMENSIONAL FUND ADVISORS LP	Increased	1.3M(+5.1%)	$106.2M	0.0%	+1.45%	32
VAVANGUARD CAPITAL MANAGEMENT LLC	Decreased	1.1M(-0.6%)	$90.2M	0.0%	+25.26%	0
STATE STREET CORP	Increased	996,027(+3.3%)	$81.1M	0.0%	-17.50%	31
Nuveen, LLC	Increased	755,723(+17.5%)	$61.5M	0.0%	+14.05%	34
GEODE CAPITAL MANAGEMENT, LLC	Increased	666,589(+5.7%)	$54.3M	0.0%	+7.95%	31
GOLDMAN SACHS GROUP INC	Increased	662,210(+34.6%)	$53.9M	0.0%	+15.34%	38
VICTORY CAPITAL MANAGEMENT INC	Decreased	660,110(-23.7%)	$53.7M	0.0%	+8.10%	0
TWO SIGMA INVESTMENTS, LP	Decreased	568,709(-4.1%)	$46.3M	0.0%	+19.83%	0
AQR CAPITAL MANAGEMENT LLC	Increased	482,545(+54.6%)	$39.3M	0.0%	+19.75%	41
BROWN ADVISORY INC	Increased	408,468(+37.8%)	$33.2M	0.1%	+8.33%	38
JPMORGAN CHASE & CO	Decreased	370,574(-13.0%)	$30M	0.0%	+10.98%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	355,658(-2.8%)	$28.9M	0.0%	+26.34%	0
ROYCE & ASSOCIATES LP	Increased	308,726(+18.1%)	$25.1M	0.2%	+15.96%	40
NORTHERN TRUST CORP	Increased	303,044(+6.6%)	$24.7M	0.0%	+21.46%	31
Qube Research & Technologies Ltd	Decreased	285,849(-29.7%)	$23.3M	0.0%	+6.43%	0
Assenagon Asset Management S.A.	Decreased	272,782(-44.4%)	$22.2M	0.0%	+24.57%	0
BANK OF AMERICA CORP /DE/	Decreased	235,742(-18.9%)	$19.2M	0.0%	-1.55%	0

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer