MLM Martin Marietta Materials, Inc.

NYSE
$489.01

Martin Marietta Materials, Inc. (MLM) Institutional Ownership

What the institutions did with MLM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.

Managers compared
15
filed both this quarter and last
Managers holding
14
+0 on the quarter
Buyers
5
1 opened new
Sellers
7
1 sold out entirely
Buyer share
41.7%
of managers who traded it
Breadth
-16.7
net buyers, as a share of those trading

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
CONFLUENCE INVESTMENT MANAGEMENT LLC 49.1K 89.4%
MassMutual Private Wealth & Trust, FSB 1.1K 2.0%
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC 1.0K 1.8%
CX Institutional 689 1.3%
Defender Capital, LLC. 650 1.2%
BAKER TILLY WEALTH MANAGEMENT, LLC 625 1.1%
First Citizens Financial Corp 504 0.9%
Heartwood Wealth Advisors LLC 477 0.9%
Polaris Financial Partners 214 0.4%
Versant Capital Management, Inc 171 0.3%
EASTERN BANK 125 0.2%
BURKETT FINANCIAL SERVICES, LLC 106 0.2%
Roxbury Financial LLC 92 0.2%
Miller Global Investments, LLC 24 0.0%
Planning Strategies Inc. 1 0.0%

Largest changes

Manager Action Previous Current Change
CONFLUENCE INVESTMENT MANAGEMENT LLC Reduced 52.2K 49.1K -3.1K
COLLECTIVE FAMILY OFFICE LLC Sold Out 435 0 -435
BAKER TILLY WEALTH MANAGEMENT, LLC Reduced 962 625 -337
MassMutual Private Wealth & Trust, FSB Increased 1.0K 1.1K +100
BURKETT FINANCIAL SERVICES, LLC Increased 27 106 +79
CX Institutional Reduced 764 689 -75
Heartwood Wealth Advisors LLC Increased 413 477 +64
EASTERN BANK Reduced 175 125 -50
Versant Capital Management, Inc Reduced 206 171 -35
First Citizens Financial Corp Reduced 521 504 -17
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC Increased 1.0K 1.0K +6
Planning Strategies Inc. New 0 1 +1

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.