MARTIN MARIETTA MATLS INC

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MLM·573284106·US·Common Stock·Basic Materials - Building Materials-Activist

MLM (MARTIN MARIETTA MATLS INC) is held by 300 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($2.7B), VANGUARD CAPITAL MANAGEMENT LLC ($2.3B), VANGUARD PORTFOLIO MANAGEMENT LLC ($1.8B). Net institutional sentiment: Mixed. In Q2 2026, 3 members of Congress and 142 funds bought MLM.

300

Holders

(26 Elite)

$30.7B

Total Value

47% (300)

Consensus

142 buying - 158 selling

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

Smart Money Verdict

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Institutional (13F)84

Insider (Form 4)62

Activist (13D/13G)75

Congressional (STOCK Act)43

Holder Quality

11

★★★★★

Elite

51

★★★★

Strong

19

★★★

Solid

57

★★

Below

84

★

Weak

Held by 300 funds

26 elite

Who's Trading

Source dates: Price Oct 15, 2026 · Insiders Sep 2, 2026 · Activists Aug 24, 2026 · Congress Aug 3, 2026

InsiderPJPetro Michael JVest 9K shSep 1, 2026

InsiderWCWAJSGRAS DAVID CVest 78 shAug 31, 2026

InsiderLJLYONS MARTIN JVest 68 shAug 31, 2026

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Top Holders

Top Holders (300)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	4.7M(+0.1%)	$2.7B	0.0%	-8.92%	32
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	3.9M(+0.3%)	$2.3B	0.0%	-16.29%	32
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	3.2M(+1.2%)	$1.8B	0.1%	-16.28%	32
STATE STREET CORP	Increased	3.2M(+9.8%)	$1.8B	0.1%	+45.71%	35
BANK OF AMERICA CORP /DE/	Increased	2.4M(+2.0%)	$1.4B	0.1%	-6.30%	32
FMR LLC	Decreased	2.2M(-15.9%)	$1.3B	0.1%	+9.88%	0
PRINCIPAL FINANCIAL GROUP INC	Increased	2.1M(+1.1%)	$1.2B	0.6%	+15.84%	45
Aristotle Capital Management, LLC	Decreased	1.8M(-6.3%)	$1.1B	2.2%	+131.07%	0
VICTORY CAPITAL MANAGEMENT INC	Increased	1.8M(+8.9%)	$1B	0.6%	-13.54%	49
PRICE T ROWE ASSOCIATES INC /MD/	Increased	1.6M(+7.4%)	$922.3M	0.1%	-16.20%	34
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.6M(+0.8%)	$919.9M	0.0%	+69.78%	32
JPMORGAN CHASE & CO	Decreased	1.5M(-21.1%)	$852.6M	0.0%	-6.78%	0
TCI Fund Management Ltd	New	1.3M	$758.4M	1.4%	-14.68%	75
GOLDMAN SACHS GROUP INC	Increased	1.2M(+31.3%)	$670.9M	0.1%	+18.29%	40
MORGAN STANLEY	Decreased	1M(-24.6%)	$583.6M	0.0%	-9.21%	0
Select Equity Group, L.P.	Decreased	1M(-2.1%)	$583.2M	2.9%	+116.10%	0
BAILLIE GIFFORD & CO	Decreased	991,786(-8.8%)	$572M	0.5%	+91.00%	0
GRGARDNER RUSSO & QUINN LLC	Decreased	705,367(-1.4%)	$406.8M	4.6%	+126.61%	0
KLKING LUTHER CAPITAL MANAGEMENT CORP	Decreased	653,184(-2.0%)	$376.7M	1.5%	+134.21%	0
Invesco Ltd.	Decreased	649,575(-6.0%)	$374.6M	0.0%	+13.42%	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