Who Owns MLM?
Martin Marietta Materials, Inc. — Institutional Ownership & 13F Holdings
$613.95
-5.12 (-0.83%)
Market Cap
$37.0B
Shares Outstanding
60,312,045
Institutional Holders
931
Total Inst. Value
$171.1B
% of Float Held
99.7%
QoQ Holder Change
+244
Institutional data as of Q1 2025
New Positions
217
Closed Positions
138
Increased
305
Decreased
289
Institutional Ownership Trend
Top 10 Institutional Holders(Q1 2025)
| # | Fund | Value | Shares |
|---|---|---|---|
| 1 | Mawer Investment Management Ltd. | $138.9B | 290,506 |
| 2 | CANADA PENSION PLAN INVESTMENT BOARD | $7.2B | 14,993 |
| 3 | VANGUARD GROUP INC | $3.5B | 7,342,358 |
| 4 | BlackRock, Inc. | $2.1B | 4,312,093 |
| 5 | JPMORGAN CHASE & CO | $1.4B | 2,944,694 |
| 6 | STATE STREET CORP | $1.3B | 2,768,972 |
| 7 | FMR LLC | $1.3B | 2,657,904 |
| 8 | Aristotle Capital Management, LLC | $1.1B | 2,338,485 |
| 9 | PRINCIPAL FINANCIAL GROUP INC | $927.8M | 1,940,423 |
| 10 | BANK OF AMERICA CORP /DE/ | $848.6M | 1,774,821 |
Biggest Buyers & Sellers This Quarter
Top Buyers
| Fund | Shares Added | Value |
|---|---|---|
| Mawer Investment Management Ltd. | +13K | $138.9B |
| VANGUARD GROUP INC | +168K | $3.5B |
| BlackRock, Inc. | +52K | $2.1B |
| JPMORGAN CHASE & CO | +269K | $1.4B |
| STATE STREET CORP | +75K | $1.3B |
Top Sellers
| Fund | Shares Removed | Value |
|---|---|---|
| Proficio Capital Partners LLC | -917K | $855K |
| BAILLIE GIFFORD & CO | -656K | $600K |
| PRICE T ROWE ASSOCIATES INC /MD/ | -560K | $99.6M |
| T. Rowe Price Investment Management, Inc. | -392K | $580.7M |
| Select Equity Group, L.P. | -217K | $569.6M |
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Frequently Asked Questions
How many institutional investors hold MLM?
As of Q1 2025, 931 institutional investors report holding MLM (Martin Marietta Materials, Inc.) in their 13F filings.
What percentage of Martin Marietta Materials, Inc. is owned by institutions?
Institutional investors hold approximately 99.7% of Martin Marietta Materials, Inc.'s float as reported in SEC 13F filings.
Which hedge fund owns the most MLM?
The largest institutional holder of MLM is Mawer Investment Management Ltd. with $138.9B in shares.
Are institutions buying or selling MLM?
This quarter, 217 institutions opened new positions in MLM and 138 closed their positions.
What is 13F institutional ownership?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in qualifying assets. It discloses their US equity holdings, providing transparency into what the largest investors are buying and selling.
How often is institutional ownership data updated?
13F filings are due 45 days after each calendar quarter end (May 15, Aug 14, Nov 14, Feb 14). Data is updated on HedgeTrace as new filings are processed.