Martin Marietta Materials
1,074 hedge funds and large institutions have $34.3B invested in Martin Marietta Materials in 2026 Q1 according to their latest regulatory filings, with 103 funds opening new positions, 369 increasing their positions, 377 reducing their positions, and 132 closing their positions.
133% more call options, than puts
Call options by funds: $92.7M | Put options by funds: $39.7M
2% less repeat investments, than reductions
Existing positions increased: 369 | Existing positions reduced: 377
2.04% less ownership
Funds ownership: 98.85% → 96.81% (-2%)
4% less funds holding
Funds holding: 1,116 → 1,074 (-42)
8% less capital invested
Capital invested by funds: $37.1B → $34.3B (-$2.8B)
8% less funds holding in top 10
Funds holding in top 10: 24 → 22 (-2)
22% less first-time investments, than exits
New positions opened: 103 | Existing positions closed: 132
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$757M |
| 2 |
DCP
D1 Capital Partners
New York
|
+$206M |
| 3 |
BlackRock
New York
|
+$127M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$76.5M |
| 5 |
State Street
Boston,
Massachusetts
|
+$67.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
-$518M |
| 2 |
JP Morgan Chase
New York
|
-$236M |
| 3 |
Eagle Capital Management (New York)
New York
|
-$204M |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
-$200M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
-$112M |
MLM Hedge Fund Activity: Q1 2026 in Review
1,074 of the 8,173 institutional investors tracked by Wall St. Rank reported a position in Martin Marietta Materials (MLM) for Q1 2026, worth a combined $34.3B — down 7.5% from $37.1B a quarter earlier.
Sellers outnumbered buyers: 132 funds closed out of MLM and 103 opened new positions — a net loss of 29 holders — while 377 trimmed existing stakes and 369 added.
The largest buyer was T. Rowe Price Associates, adding an estimated $757M. The largest seller was Victory Capital Management, cutting an estimated $518M.
- 1,074 institutional investors held Martin Marietta Materials (MLM) as of Q1 2026, down from 1,116 in Q4 2025.
- Funds reported $34.3B of Martin Marietta Materials stock for Q1 2026, down 7.5% quarter-over-quarter.
- 103 funds opened new Martin Marietta Materials positions in Q1 2026 and 132 closed out, a net change of -29 holders.
- The largest Martin Marietta Materials buyer in Q1 2026 was T. Rowe Price Associates, an estimated $757M added.
- The largest Martin Marietta Materials seller in Q1 2026 was Victory Capital Management, an estimated $518M sold.
Based on aggregated 13F filings for Q1 2026.