$MLM is held by 22 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 3.56%, with an average of 0.22% of portfolio. Largest holder: Progeny 3, Inc. at 3.56%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.
MARTIN MARIETTA MATLS INC
13F holders
1,065
Net 13F flow · Q
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Insider buys · 90d
0
Insider net · 90d
—
Congress · 90d
1trades
Convergence
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Institutional holders
Top 10 of 1,065 · Source: 13F-HR01
Axa S.a.
—
—
02
State Street
—
—
03
Parthenon LLC
—
—
04
Account Management LLC
—
—
05
Abner Herrman & Brock LLC
—
—
06
RE Dickinson Investment Advisors, LLC
—
—
07
Banyan Capital Management, Inc.
—
—
08
TB Capital Gestao de Recursos Ltda.
—
—
09
Roberts Capital Advisors, LLC
—
—
10
Sit Investment Associates Inc.
—
—
Each fund name links to that filer's expert page. Share counts and per-fund weights are pending the 13F ingest fix (portfolios_expertholding.units is currently mis-populated — see the same caveat on the fund detail page's holdings table). Quarter-over-quarter delta ships with the metrics pipeline.
Smart Money · top-200 alpha cohort
22 holders · Q1 202601
Progeny 3, Inc.
3.56% held
α +11.9pts
02
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund
0.43% NEW
α +13.4pts
03
Merrion Investment Management Co, LLC
0.32% held
α +16.0pts
04
Corsicana & Co.
0.21% held
α +20.0pts
05
Bradley Foster & Sargent INC
0.08% held
α +11.1pts
06
Svb Wealth LLC
0.05% held
α +29.6pts
07
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.04% held
α +27.5pts
08
Eventide Asset Management, LLC
0.03% held
α +22.5pts
09
Shufro Rose & Co. LLC
0.03% held
α +32.3pts
10
Banque Pictet & Cie SA
0.02% held
α +10.3pts
11
Nisa Investment Advisors, LLC
0.02% held
α +16.6pts
12
Principal Securities, Inc.
0.02% held
α +21.3pts
13
Citigroup Inc.
0.02% held
α +26.3pts
14
Fulton Bank, N.a.
0.01% held
α +23.8pts
15
Choate Investment Advisors
0.01% held
α +13.8pts
16
Scopia Capital Management LP
0.01% held
α +10.2pts
17
Quarry LP
0.00% held
α +10.6pts
18
Johnson Financial Group, Inc.
0.00% held
α +14.7pts
19
Banco Santander, S.A.
0.00% held
α +12.6pts
20
New Age Alpha Advisors, LLC
0.00% held
α +10.8pts
21
Wellington Management Group LLP
0.00% held
α +10.5pts
22
CV Advisors LLC
0.00% held
α +29.1pts
Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.
Insider activity · last 90 days
3 transactions · 3 filersTransaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.
Congress trades · last 90 days
37 disclosures · STOCK ActConvergence · Pattern Engine ships in v1.1
30-day windowIn development
Convergence detection for $MLM lands with the Pattern Engine.
Once the Pattern Engine ships, this section will surface every active convergence event involving $MLM — the institutional managers and Congress members on the same name, the 30-day window, and the combined position size.
Source data: SEC EDGAR · 13F-HR · Form 4 · CapitolTrades · Last refreshed 08:31 UTC.