Martin Marietta Materials
1,053 hedge funds and large institutions have $36.7B invested in Martin Marietta Materials in 2025 Q3 according to their latest regulatory filings, with 133 funds opening new positions, 366 increasing their positions, 344 reducing their positions, and 64 closing their positions.
108% more first-time investments, than exits
New positions opened: 133 | Existing positions closed: 64
71% more call options, than puts
Call options by funds: $83.4M | Put options by funds: $48.8M
15% more funds holding in top 10
Funds holding in top 10: 20 → 23 (+3)
12% more capital invested
Capital invested by funds: $32.8B → $36.7B (+$3.91B)
6% more funds holding
Funds holding: 997 → 1,053 (+56)
6% more repeat investments, than reductions
Existing positions increased: 366 | Existing positions reduced: 344
2.46% less ownership
Funds ownership: 99.01% → 96.55% (-2.5%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Principal Financial Group
Des Moines,
Iowa
|
+$115M |
| 2 |
FGP
Freestone Grove Partners
San Francisco,
California
|
+$65.7M |
| 3 |
Millennium Management
New York
|
+$58.4M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$55.8M |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$41.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CIBC Private Wealth Group
Atlanta,
Georgia
|
-$128M |
| 2 |
Select Equity Group
New York
|
-$87.4M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$77.8M |
| 4 |
Aristotle Capital Management
Los Angeles,
California
|
-$72.4M |
| 5 |
Two Sigma Investments
New York
|
-$71M |
MLM Hedge Fund Activity: Q3 2025 in Review
1,053 of the 7,638 institutional investors tracked by Wall St. Rank reported a position in Martin Marietta Materials (MLM) for Q3 2025, worth a combined $36.7B — up 12% from $32.8B a quarter earlier.
Buyers outnumbered sellers: 133 funds opened new MLM positions and 64 closed out — a net gain of 69 holders — while 366 added to existing stakes and 344 trimmed.
The largest buyer was Principal Financial Group, adding an estimated $115M. The largest seller was CIBC Private Wealth Group, cutting an estimated $128M.
- 1,053 institutional investors held Martin Marietta Materials (MLM) as of Q3 2025, up from 997 in Q2 2025.
- Funds reported $36.7B of Martin Marietta Materials stock for Q3 2025, up 12% quarter-over-quarter.
- 133 funds opened new Martin Marietta Materials positions in Q3 2025 and 64 closed out, a net change of +69 holders.
- The largest Martin Marietta Materials buyer in Q3 2025 was Principal Financial Group, an estimated $115M added.
- The largest Martin Marietta Materials seller in Q3 2025 was CIBC Private Wealth Group, an estimated $128M sold.
Based on aggregated 13F filings for Q3 2025.