Martin Marietta Materials MLM Institutional Ownership

NYSE MLM

$509.36 +1.78 (+0.35%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

1,072 Institutions

Increased 469 43.8%

Unchanged 211 19.7%

Reduced 392 36.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

98.47%

▲+1.66 pp QoQ

Shares Held by Institutions

59.18Mn

of 60.10Mn outstanding

▲+1.38% QoQ

Shares Outstanding

60.10Mn

922.29K held outside 13F filers

Institutional Investors

1,072

filed 13F for Jun 2026

▲+2 vs prior quarter

Net Shares Added (QoQ)

+804.58K

accumulated since last quarter

Value of Holdings

$30.04Bn

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

Updated Oct 11, 2026

Martin Marietta Materials Inc (NYSE:MLM) was reported as a holding by 1,071 institutional investors in 13F filings for the quarter ended June 30, 2026.

These investors held 98.47% of Martin Marietta Materials' outstanding shares at the end of Q2 2026, up from 96.80% in Q1 2026.
Total shares held in Martin Marietta Materials rose 1.38% from Q1 2026, while the number of holders rose 7.42% from Q2 2025.
Among the 1,071 holders of Martin Marietta Materials, 469 added to their positions, 391 reduced their stakes and 211 left their positions unchanged.
Combined, institutional investors held 59.18Mn shares of MLM as of Q2 2026, up 804.59K from the prior quarter and up 784.48K from a year earlier.
BlackRock, Inc. led 13F holders of MLM with 4.69Mn shares as of June 30, 2026, or 7.81% of shares outstanding.
Holders that added the most shares of Martin Marietta Materials in Q2 2026 were State Street Corp (+282.07K shares), Goldman Sachs Group Inc (+277.48K shares), Victory Capital Management Inc (+146.28K shares), T. Rowe Price Associates Inc (+110.48K shares) and Hawk Ridge Capital Management LP (+78.12K shares).
Among holders that kept a stake in Martin Marietta Materials, the biggest sellers in Q2 2026 were FMR LLC (-415.38K shares), JPMorgan Chase & Co (-393.34K shares), Morgan Stanley (-329.58K shares), T. Rowe Price Investment Management, Inc. (-311.08K shares) and Congress Asset Management Co (-177.02K shares).
According to Business Quant data, the leading holders of MLM for Q2 2026 were BlackRock, Inc. (4.69Mn shares), Vanguard Capital Management LLC (3.93Mn shares), Vanguard Portfolio Management LLC (3.2Mn shares), State Street Corp (3.16Mn shares), Bank of America Corp (2.45Mn shares), FMR LLC (2.19Mn shares), Principal Financial Group Inc (2.12Mn shares), Aristotle Capital Management, LLC (1.83Mn shares), Victory Capital Management Inc (1.78Mn shares) and Geode Capital Management, LLC (1.6Mn shares).

Form 13F Holdings

1,076 Institutional Holders

Report period 30 Jun, 2026

Total shares held 59.18Mn

Of outstanding 98.47%

#	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 1,076 holders