MasterBrand
337 hedge funds and large institutions have $1.76B invested in MasterBrand in 2025 Q3 according to their latest regulatory filings, with 55 funds opening new positions, 106 increasing their positions, 82 reducing their positions, and 38 closing their positions.
643% more call options, than puts
Call options by funds: $52K | Put options by funds: $7K
45% more first-time investments, than exits
New positions opened: 55 | Existing positions closed: 38
40% more funds holding in top 10
Funds holding in top 10: 5 → 7 (+2)
35% more capital invested
Capital invested by funds: $1.31B → $1.76B (+$453M)
29% more repeat investments, than reductions
Existing positions increased: 106 | Existing positions reduced: 82
11.05% more ownership
Funds ownership: 94.56% → 105.61% (+11%)
4% more funds holding
Funds holding: 325 → 337 (+12)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCP
Diameter Capital Partners
New York
|
+$50.2M |
| 2 |
CCM
Coliseum Capital Management
Rowayton,
Connecticut
|
+$40.3M |
| 3 |
AAM
ACK Asset Management
Greenwich,
Connecticut
|
+$28.4M |
| 4 |
SSP
Sixth Street Partners
Dallas,
Texas
|
+$24M |
| 5 |
SCM
Stonehill Capital Management
New York
|
+$18.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Thrivent Financial for Lutherans
Minneapolis,
Minnesota
|
-$46.6M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$26.3M |
| 3 |
GCM
Gates Capital Management
New York
|
-$20.4M |
| 4 |
Millennium Management
New York
|
-$5.49M |
| 5 |
RA
Royce & Associates
New York
|
-$3.06M |
MBC Hedge Fund Activity: Q3 2025 in Review
337 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in MasterBrand (MBC) for Q3 2025, worth a combined $1.76B — up 35% from $1.31B a quarter earlier.
Buyers outnumbered sellers: 55 funds opened new MBC positions and 38 closed out — a net gain of 17 holders — while 106 added to existing stakes and 82 trimmed.
The largest buyer was Diameter Capital Partners, adding an estimated $50.2M. The largest seller was Thrivent Financial for Lutherans, cutting an estimated $46.6M.
- 337 institutional investors held MasterBrand (MBC) as of Q3 2025, up from 325 in Q2 2025.
- Funds reported $1.76B of MasterBrand stock for Q3 2025, up 35% quarter-over-quarter.
- 55 funds opened new MasterBrand positions in Q3 2025 and 38 closed out, a net change of +17 holders.
- The largest MasterBrand buyer in Q3 2025 was Diameter Capital Partners, an estimated $50.2M added.
- The largest MasterBrand seller in Q3 2025 was Thrivent Financial for Lutherans, an estimated $46.6M sold.
Based on aggregated 13F filings for Q3 2025.