Martin Marietta Materials
MLM
1,077 hedge funds and large institutions have $34.2B invested in Martin Marietta Materials in 2026 Q2 according to their latest regulatory filings, with 109 funds opening new positions, 362 increasing their positions, 396 reducing their positions, and 99 closing their positions.
112% more call options, than puts
Call options by funds: $103M | Put options by funds: $48.7M
25% more capital inflows, than outflows
Capital inflows: $2.85B | Capital outflows: $2.29B
10% more first-time investments, than exits
New positions opened: 109 | Existing positions closed: 99
1.85% more ownership
Funds ownership: 96.82% → 98.67% (+1.9%)
0% more funds holding
Funds holding: 1,077 → 1,077 (0)
9% less repeat investments, than reductions
Existing positions increased: 362 | Existing positions reduced: 396
23% less funds holding in top 10
Funds holding in top 10: 22 → 17 (-5)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TCI Fund Management
London,
United Kingdom
|
+$780M |
| 2 |
State Street
Boston,
Massachusetts
|
+$167M |
| 3 |
Goldman Sachs
New York
|
+$165M |
| 4 |
59 North Capital Management
Houston,
Texas
|
+$127M |
| 5 |
Victory Capital Management
San Antonio,
Texas
|
+$86.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$246M |
| 2 |
JP Morgan Chase
New York
|
-$233M |
| 3 |
Morgan Stanley
New York
|
-$195M |
| 4 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$184M |
| 5 |
Congress Asset Management
Boston,
Massachusetts
|
-$105M |
MLM Hedge Fund Activity: Q2 2026 in Review
1,077 of the 8,367 institutional investors tracked by Wall St. Rank reported a position in Martin Marietta Materials (MLM) for Q2 2026, worth a combined $34.2B — down 0.49% from $34.3B a quarter earlier.
Buyers outnumbered sellers: 109 funds opened new MLM positions and 99 closed out — a net gain of 10 holders — while 362 added to existing stakes and 396 trimmed.
The largest buyer was TCI Fund Management, opening a new position worth an estimated $780M. The largest seller was Fidelity Investments, cutting an estimated $246M.
- 1,077 institutional investors held Martin Marietta Materials (MLM) as of Q2 2026, unchanged from Q1 2026.
- Funds reported $34.2B of Martin Marietta Materials stock for Q2 2026, down 0.49% quarter-over-quarter.
- 109 funds opened new Martin Marietta Materials positions in Q2 2026 and 99 closed out, a net change of +10 holders.
- The largest Martin Marietta Materials buyer in Q2 2026 was TCI Fund Management, an estimated $780M added.
- The largest Martin Marietta Materials seller in Q2 2026 was Fidelity Investments, an estimated $246M sold.
Based on aggregated 13F filings for Q2 2026.