MAREX GROUP PLC

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MRX·G5S37H101·US·Common Stock·Financial Services - Capital Markets-13D/G

MRX (MAREX GROUP PLC) is held by 116 institutional investors as of Q2 2026. Largest holders: FMR LLC ($327.2M), PRICE T ROWE ASSOCIATES INC /MD/ ($300.1M), BlackRock, Inc. ($280M). Net institutional sentiment: Mixed.

116

Holders

(10 Elite)

$2.9B

Total Value

60% (131)

Consensus

79 buying - 52 selling

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

Smart Money Verdict

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Institutional (13F)58

Insider (Form 4)72

Activist (13D/13G)28

Congressional (STOCK Act)55

Holder Quality

54

★★★★★

Elite

40

★★★★

Strong

62

★★★

Solid

20

★★

Below

89

★

Weak

Held by 116 funds

10 elite

Who's Trading

Source dates: Price Oct 15, 2026 · Insiders Oct 14, 2026 · Activists Aug 14, 2026 · Congress none

InsiderTPTonucci PaoloSell $84KOct 12, 2026

InsiderTPTonucci PaoloSell $1.1MOct 12, 2026

InsiderVSVan Den Born SimonSell $1.0MOct 12, 2026

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Top Holders

Top Holders (116)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
FMR LLC	Increased	5.4M(+54.2%)	$327.2M	0.0%	+53.44%	44
PRICE T ROWE ASSOCIATES INC /MD/	Increased	4.9M(+158.3%)	$300.1M	0.0%	+40.69%	50
BlackRock, Inc.	Increased	4.6M(+4.7%)	$280M	0.0%	+100.29%	32
Capital International Investors	Decreased	3.3M(-6.4%)	$199M	0.0%	+162.06%	0
ALLIANCEBERNSTEIN L.P.	Increased	2.6M(+50.3%)	$115.9M	0.0%	+56.33%	42
WASATCH ADVISORS LP	Increased	1.7M(+883.6%)	$102.6M	0.7%	+18.19%	68
LOOMIS SAYLES & CO L P	Decreased	1.6M(-15.2%)	$99.1M	0.1%	+104.59%	0
Invesco Ltd.	Increased	1.4M(+2.3%)	$85.6M	0.0%	+79.86%	30
TWO SIGMA INVESTMENTS, LP	Decreased	1.3M(-20.6%)	$81.4M	0.1%	+94.66%	0
VICTORY CAPITAL MANAGEMENT INC	Decreased	1.3M(-1.8%)	$78.7M	0.0%	+80.35%	0
MORGAN STANLEY	Increased	1.2M(+145.1%)	$71.3M	0.0%	+50.37%	48
ROYCE & ASSOCIATES LP	Decreased	1.1M(-11.3%)	$67.7M	0.5%	+183.93%	0
STATE STREET CORP	Increased	1M(+17.6%)	$62.6M	0.0%	+77.51%	34
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	Decreased	1M(-35.6%)	$61.5M	0.2%	+102.25%	0
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	Increased	1M(+43.1%)	$61.5M	0.1%	+72.94%	40
AMERIPRISE FINANCIAL INC	Decreased	904,162(-5.3%)	$55.1M	0.0%	+82.02%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	897,253(+23.5%)	$52.9M	0.0%	+77.71%	36
WELLINGTON MANAGEMENT GROUP LLP	Increased	775,023(+18.2%)	$47.2M	0.0%	+82.36%	34
WESTFIELD CAPITAL MANAGEMENT CO LP	New	688,665	$42M	0.1%	+18.62%	48
JENNISON ASSOCIATES LLC	Decreased	604,393(-62.4%)	$36.8M	0.0%	+164.69%	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