MLM

Martin Marietta Materials$553.37 0.44%
MaterialsUSCUSIP 573284106· EOD Aug 5, 2026◍ Confluence graph
Tracked 13F Holders
810
-458 QoQ
13F Value (tracked)
$31.8B
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)23 adding · 27 trimming
Insider net (180d)$0

Price & smart-money activity

$553.37 0.44%5Y +50.9%
$266.09$384.78$503.47$622.16$740.85202120222023202420252026848310389891089510590981099810510712399213598141111514912714113916311718417418818720416822019423920421125391102
Hover for who · click for detailEnd-of-day closing prices52w $525.14 – $708.11

Who owns MLM?

810 tracked 13F filers

810 tracked 13F filers disclose a position in MLM as of the latest SEC 13F filings, a combined $31.8B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
5 source-reported value rows are withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$2.8B
4.7M
+4.4%
Added · +200K sh
Q1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$2.3B
3.9M
First observed position
No prior filed position
Q1 2026
3VANGUARD PORTFOLIO MANAGEMENT LLC
$1.9B
3.2M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$1.7B
2.9M
+3.8%
Added · +106K sh
Q1 2026
5FMR LLC
$1.5B
2.6M
−11%
Reduced · −314K sh
Q1 2026
6BANK OF AMERICA CORP /DE/
$1.4B
2.4M
+0.9%
Added · +21K sh
Q1 2026
7PRINCIPAL FINANCIAL GROUP INC
$1.2B
2.1M
−3.5%
Reduced · −77K sh
Q1 2026
8Aristotle Capital Management, LLC
$1.2B
2.0M
−4.6%
Reduced · −95K sh
Q1 2026
9JPMORGAN CHASE & CO
$1.1B
1.9M
−17%
Reduced · −369K sh
Q1 2026
10VICTORY CAPITAL MANAGEMENT INC
$963.8M
1.6M
−33%
Reduced · −812K sh
Q1 2026
11GEODE CAPITAL MANAGEMENT, LLC
$931.8M
1.6M
+2.3%
Added · +36K sh
Q1 2026
12PRICE T ROWE ASSOCIATES INC /MD/
$876.5M
1.5M
+391%
Added · +1.2M sh
Q1 2026
13MORGAN STANLEY
$789.8M
1.3M
−1.9%
Reduced · −25K sh
Q1 2026
14BAILLIE GIFFORD & CO
$640.1M
1.1M
−6.2%
Reduced · −72K sh
Q1 2026
15T. Rowe Price Investment Management, Inc.
Withheld
952K
+3.8%
Added · +35K sh
Q1 2026
16GOLDMAN SACHS GROUP INC
$521.5M
886K
+12%
Added · +96K sh
Q1 2026
17ALKEON CAPITAL MANAGEMENT LLC
$440.0M
747K
Held
Q1 2026
18GARDNER RUSSO & QUINN LLC
$421.1M
715K
−1.5%
Reduced · −11K sh
Q1 2026
19KING LUTHER CAPITAL MANAGEMENT CORP
$392.5M
667K
−3.4%
Reduced · −23K sh
Q1 2026
20NORTHERN TRUST CORP
$345.3M
587K
−2.2%
Reduced · −13K sh
Q1 2026
21NORGES BANK
$354.7M
570K
+34%
Added · +144K sh
Q4 2025
22DIMENSIONAL FUND ADVISORS LP
$321.4M
546K
+1.1%
Added · +6K sh
Q1 2026
23FRANKLIN RESOURCES INC
$310.9M
528K
+6.0%
Added · +30K sh
Q1 2026
24CIBC Bancorp USA Inc.
$279.4M
475K
14×
Added · +441K sh
Q1 2026
25CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$271.1M
461K
+2.6%
Added · +12K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is MLM being bought or sold by institutions?

Last quarter, 1 fund opened a new position in MLM and 22 added to an existing one, while 27 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
1
funds
Added
22
funds
Reduced
27
funds
Exited
0
funds

Funds that own MLM also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT478 funds$340.7B
AMAZON.COM INCAMZN477 funds$257.3B
APPLE INCAAPL470 funds$369.1B
NVIDIA CORPNVDA469 funds$478.3B
ALPHABET INC-CL AGOOGL469 funds$212.9B
JPMORGAN CHASE & COJPM459 funds$83.1B
ALPHABET INC-CL CGOOG456 funds$153.5B
META PLATFORMS INC-CLASS AMETA456 funds$141.4B
VISA INC-CLASS A SHARESV456 funds$77.4B
ELI LILLY & COLLY449 funds$94.0B
BROADCOM INCAVGO447 funds$187.4B
WALMART INCWMT445 funds$45.8B

Ranked by how many of MLM's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$0
0 insiders
Net
$0
0 P/S txns
Signal
Mixed
open-market
DateInsiderRoleActionSharesValue
Aug 8, 2025PEREZ LAREE EDirectorSell (S)1K$637K
Mar 5, 2025McCunniff Donald A.EVP and CHROSell (S)1K$633K
Mar 4, 2025Petro Michael JSVP - Strategy and DevelopmentBuy (P)550$250K
Mar 14, 2024BAR ROSELYN REVP, General Counsel and SecySell (S)10K$6.0M
Mar 5, 2024Nye C HowardChairman, Pres & CEO, DirectorSell (S)5K$3.0M
Mar 5, 2024Nye C HowardChairman, Pres & CEO, DirectorSell (S)15K$9.1M
Feb 16, 2024COLE SUE WDirectorSell (S)843$456K
Feb 16, 2024COLE SUE WDirectorSell (S)881$481K
Aug 21, 2023LaTorre Craig MSr. VP, CHROSell (S)2K$835K
Jul 28, 2023LaTorre Craig MSr. VP, CHROSell (S)500$224K
Nov 18, 2022COLE SUE WDirectorSell (S)2K$599K
Jun 10, 2022Mohr John PSVP - CIOSell (S)0$145

Institutional ownership over time

350 funds-272 since Q3 2024
0417833Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $962.5M · 4 values withheld

Recent filings

15 shown

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Connected entities for MLM

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Ask your agent what changed in MLM

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/MLM/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for MLM.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MLM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.