Company · Ownership research

MARTIN MARIETTA MATERIALS INC MLM

CIK 0000916076 · CUSIP 573284106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 573284106 (MLM), not CUSIP 573284906 (MLM), CUSIP 573284956 (MLM), and does not merge CUSIPs.

This page lists the top 20 of 1,118 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$4.59B 7,373,884 shares	0.07%	-69.06K(-0.90%)Reduced	SEC filing ↗ Jan 29, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$2.79B 4,486,226 shares	0.05%	+334.22K(+8.00%)Added	SEC filing ↗ Feb 12, 2026	▾
03	FMR LLC CIK 315066 · View history	$1.82B 2,921,794 shares	0.09%	+42.25K(+1.50%)Added	SEC filing ↗ Feb 17, 2026	▾
04	STATE STREET CORP CIK 93751 · View history	$1.73B 2,771,720 shares	0.06%	-25.56K(-0.90%)Reduced	SEC filing ↗ Feb 13, 2026	▾
05	VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history	$1.52B 2,448,928 shares	0.86%	+836.12K(+51.80%)Added	SEC filing ↗ Feb 13, 2026	▾
06	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$1.48B 2,378,469 shares	0.11%	+12.64K(+0.50%)Added	SEC filing ↗ Feb 17, 2026	▾
07	JPMORGAN CHASE & CO CIK 19617 · View history	$1.39B 2,229,587 shares	0.09%	-705.20K(-24.00%)Reduced	SEC filing ↗ Feb 11, 2026	▾
08	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$1.35B 2,170,746 shares	0.69%	-33.68K(-1.50%)Reduced	SEC filing ↗ Feb 2, 2026	▾
09	Aristotle Capital Management, LLC CIK 860644 · View history	$1.28B 2,050,277 shares	2.56%	-103.85K(-4.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$963.41M 1,553,364 shares	0.06%	+10.74K(+0.70%)Added	SEC filing ↗ Feb 9, 2026	▾
11	MORGAN STANLEY CIK 895421 · Amended · View history	$851.19M 1,367,016 shares	0.05%	+68.38K(+5.30%)Added	SEC filing ↗ May 27, 2026	▾
12	BAILLIE GIFFORD & CO CIK 1088875 · View history	$721.90M 1,159,375 shares	0.60%	-36.42K(-3.00%)Reduced	SEC filing ↗ Jan 23, 2026	▾
13	Select Equity Group, L.P. CIK 1592643 · View history	$664.71M 1,067,530 shares	3.09%	+30.97K(+3.00%)Added	SEC filing ↗ Feb 17, 2026	▾
14	T. Rowe Price Investment Management, Inc. CIK 1897612 · Amended · View history	$571.33M 917,565 shares	0.36%	-136.10K(-12.90%)Reduced	SEC filing ↗ Feb 19, 2026	▾
15	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$491.61M 789,535 shares	0.07%	-28.57K(-3.50%)Reduced	SEC filing ↗ Mar 25, 2026	▾
16	Invesco Ltd. CIK 914208 · Amended · View history	$479.39M 769,904 shares	0.05%	+65.62K(+9.30%)Added	SEC filing ↗ Feb 19, 2026	▾
17	ALKEON CAPITAL MANAGEMENT LLC CIK 1230239 · View history	$465.35M 747,351 shares	2.03%	0(0.00%)Unchanged	SEC filing ↗ Feb 17, 2026	▾
18	GARDNER RUSSO & GARDNER LLC CIK 860643 · View history	$452.43M 726,612 shares	4.88%	+39.08K(+5.70%)Added	SEC filing ↗ Feb 12, 2026	▾
19	KING LUTHER CAPITAL MANAGEMENT CORP CIK 310051 · View history	$429.72M 690,128 shares	1.75%	+5.03K(+0.70%)Added	SEC filing ↗ Feb 9, 2026	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$373.38M 599,660 shares	0.05%	-2.42K(-0.40%)Reduced	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 1,118 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

1,118

Cancelled or null records excluded

Disclosed shares

59,565,865

Not deduplicated across managers

Disclosed value

$37.10B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MARTIN MARIETTA MATERIALS INC · Q4 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.