Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

MARTIN MARIETTA MATERIALS · common stock (filed as COM) · Q1 2026 · 8 members disclosed MLM ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 852 holders are listed, largest first
852
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$29.7B
holders whose share count rose or who opened the position (new + add), by shares
373
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
109
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of MLM ranked by reported value, 1–25 of 852 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$2.8B4,685,757+199,531ADD
2VANGUARD CAPITAL MANAGEMENT LLC$2.3B3,917,383—NO PRIOR
3VANGUARD PORTFOLIO MANAGEMENT LLC$1.9B3,160,444—NO PRIOR
4STATE STREET CORP$1.7B2,877,568+105,848ADD
5FMR LLC$1.5B2,607,979−313,815TRIM
6BANK OF AMERICA CORP /DE/$1.4B2,399,779+21,310ADD
7PRINCIPAL FINANCIAL GROUP INC$1.2B2,093,942−76,804TRIM
8Aristotle Capital Management, LLC$1.2B1,955,100−95,177TRIM
9VICTORY CAPITAL MANAGEMENT INC$964M1,637,147−811,781TRIM
10GEODE CAPITAL MANAGEMENT, LLC$932M1,588,934+35,570ADD
11MORGAN STANLEY$790M1,341,601−25,415TRIM
12BAILLIE GIFFORD & CO$640M1,087,380−71,995TRIM
13Select Equity Group, L.P.$608M1,033,420−34,110TRIM
14ALKEON CAPITAL MANAGEMENT LLC$440M747,3510NO CHANGE
15GARDNER RUSSO & QUINN LLC$421M715,411−11,201TRIM
16Invesco Ltd.$407M690,913−78,991TRIM
17KING LUTHER CAPITAL MANAGEMENT CORP$392M666,722−23,406TRIM
18NORTHERN TRUST CORP$345M586,501−13,159TRIM
19DIMENSIONAL FUND ADVISORS LP$321M546,170+5,764ADD
20FRANKLIN RESOURCES INC$311M528,199+29,866ADD
21CIBC Bancorp USA Inc.$279M474,543—NO PRIOR
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC$271M460,519+11,635ADD
23MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$264M448,048+26,156ADD
24Bank of New York Mellon Corp$218M370,958+79ADD
25UBS Group AG$208M354,168+119,839ADD
Show the top 500 of 852 holders
Truncated by Public Filings. Top 500 of 852 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · MLM

Congress · last 90 days

Buyers
1 April McClain Delaney D–MD-6 $18K–$95K
Sellers
1 April McClain Delaney D–MD-6 $250K–$500K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

Trimming
0 — $0 held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · MARTIN MARIETTA MATERIALS

Merged timeline of congressional filings and notable-manager moves on MLM
DateWhoChangeSize
2026-09-09April McClain Delaney CongressSELL$250K–$500K
2026-09-09April McClain Delaney CongressBUY$1K–$15K
2026-08-03April McClain Delaney CongressBUY$15K–$50K
2026-08-03April McClain Delaney CongressBUY$1K–$15K
2026-08-03April McClain Delaney CongressBUY$1K–$15K
2026-05-15D1 Capital Partners 13FNEW+322,857 sh
2026-05-15Gotham Asset Management 13FADD+7,085 sh

7 newest, by filing date · 13F rows are quarter-end snapshots, not trades

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.