Martin Marietta Materials MLM Institutional Ownership

NYSE MLM

$479.84 +0.75 (+0.16%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

1,076 Institutions

Increased 470 43.7%

Unchanged 213 19.8%

Reduced 393 36.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

99.45%

▲+2.64 pp QoQ

Shares Held by Institutions

59.77Mn

of 60.10Mn outstanding

▲+3.10% QoQ

Shares Outstanding

60.10Mn

333.26K held outside 13F filers

Institutional Investors

1,076

filed 13F for Jun 2026

▲+5 vs prior quarter

Net Shares Added (QoQ)

+1.80Mn

accumulated since last quarter

Value of Holdings

$28.63Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Martin Marietta Materials Inc (NYSE:MLM) showed up in the 13F filings of 1,076 institutional investors as of June 2026.

These investors held 99.4% of outstanding shares in June 2026, up from 96.8% in March 2026.
They increased total shares held in Martin Marietta Materials by 3.1% from the prior quarter, while the number of investors in MLM increased 7.71% year over year.
Of these 1,076 holders, 470 added to their stakes in Martin Marietta Materials, 393 trimmed positions, and 213 made no changes.
Combined, these investors held 59.77Mn shares in MLM for June 2026, up by 1.8Mn shares quarter on quarter, and up 1.37Mn shares year over year.
BlackRock, Inc. is the top holder of Martin Marietta Materials as of June 30, 2026, with 4.69Mn shares representing 7.81% of outstanding stock.
The biggest buyers of Martin Marietta Materials for the quarter ending June 2026 included TCI Fund Management Ltd (1.32Mn), NORGES BANK (557.14K), Sixth Street Partners Management Company, L.P. (492.54K), State Street Corp (282.07K), Goldman Sachs Group Inc (277.48K).
The biggest sellers of Martin Marietta Materials for the quarter ending June 2026 included FMR LLC (415.38K), Jpmorgan Chase & Co (393.34K), Morgan Stanley (329.58K), T. Rowe Price Investment Management, Inc. (311.08K), CONGRESS ASSET MANAGEMENT CO (177.02K).
Business Quant data shows the 10 biggest positions in Martin Marietta Materials as of June 2026 are held by BlackRock, Inc. (4.69Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.93Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.2Mn), State Street Corp (3.16Mn), Bank Of America Corp /De/ (2.45Mn), FMR LLC (2.19Mn), Principal Financial Group Inc (2.12Mn), Aristotle Capital Management, LLC (1.83Mn), VICTORY CAPITAL MANAGEMENT INC (1.78Mn), GEODE CAPITAL MANAGEMENT, LLC (1.6Mn).

Form 13F Holdings

1,074 Institutional Holders

Report period 30 Jun, 2026

Total shares held 59.77Mn

Of outstanding 99.45%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	4,692,446	7.81%	▲6,689	+0.14%	$2.71Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,929,705	6.54%	▲12,322	+0.31%	$2.27Bn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,197,395	5.32%	▲36,951	+1.17%	$1.84Bn
4	State Street Corp	0000093751	3,159,639	5.26%	▲282,071	+9.80%	$1.82Bn
5	Bank Of America Corp /De/	0000070858	2,446,762	4.07%	▲46,983	+1.96%	$1.41Bn
6	FMR LLC	0000315066	2,192,603	3.65%	▼415,376	-15.93%	$1.26Bn
7	Principal Financial Group Inc	0001126328	2,116,369	3.52%	▲22,427	+1.07%	$1.22Bn
8	Aristotle Capital Management, LLC	0000860644	1,831,597	3.05%	▼123,503	-6.32%	$1.06Bn
9	VICTORY CAPITAL MANAGEMENT INC	0001040188	1,783,432	2.97%	▲146,285	+8.94%	$1.03Bn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,601,490	2.66%	▲12,556	+0.79%	$919.89Mn
11	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,599,324	2.66%	▲110,484	+7.42%	$922.33K
12	Jpmorgan Chase & Co	0000019617	1,466,887	2.44%	▼393,336	-21.14%	$852.60Mn
13	TCI Fund Management Ltd	0001647251	1,315,109	2.19%	▲1,315,109	0.00%	$758.42Mn
14	Goldman Sachs Group Inc	0000886982	1,163,330	1.94%	▲277,475	+31.32%	$670.89Mn
15	Morgan Stanley	0000895421	1,012,016	1.68%	▼329,585	-24.57%	$583.63Mn
16	Select Equity Group, L.P.	0001592643	1,011,255	1.68%	▼22,165	-2.14%	$583.19Mn
17	BAILLIE GIFFORD & CO	0001088875	991,786	1.65%	▼95,594	-8.79%	$571.96Mn
18	GARDNER RUSSO & QUINN LLC	0000860643	705,367	1.17%	▼10,044	-1.40%	$406.78Mn
19	KING LUTHER CAPITAL MANAGEMENT CORP	0000310051	653,184	1.09%	▼13,538	-2.03%	$376.69Mn
20	Invesco Ltd.	0000914208	649,575	1.08%	▼41,338	-5.98%	$374.61Mn

Showing 1 to 20 of 1,074 holders