MasterBrand
335 hedge funds and large institutions have $1.29B invested in MasterBrand in 2026 Q1 according to their latest regulatory filings, with 55 funds opening new positions, 94 increasing their positions, 93 reducing their positions, and 46 closing their positions.
20% more first-time investments, than exits
New positions opened: 55 | Existing positions closed: 46
14% more call options, than puts
Call options by funds: $8K | Put options by funds: $7K
5.61% more ownership
Funds ownership: 115.86% → 121.46% (+5.6%)
1% more funds holding
Funds holding: 331 → 335 (+4)
1% more repeat investments, than reductions
Existing positions increased: 94 | Existing positions reduced: 93
14% less funds holding in top 10
Funds holding in top 10: 7 → 6 (-1)
21% less capital invested
Capital invested by funds: $1.62B → $1.29B (-$335M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AMH
Apollo Management Holdings
New York
|
+$28.5M |
| 2 |
MAC
Monarch Alternative Capital
New York
|
+$21.6M |
| 3 |
CCM
Coliseum Capital Management
Rowayton,
Connecticut
|
+$20.8M |
| 4 |
AAM
ACK Asset Management
Greenwich,
Connecticut
|
+$15.1M |
| 5 |
AF
Atlas FRM
Greenwich,
Connecticut
|
+$14.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCP
Diameter Capital Partners
New York
|
-$48.3M |
| 2 |
Boston Partners
Boston,
Massachusetts
|
-$21.3M |
| 3 |
Teacher Retirement System of Texas
Austin,
Texas
|
-$15.3M |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$7.78M |
| 5 |
WP
Woodline Partners
San Francisco,
California
|
-$7.68M |
MBC Hedge Fund Activity: Q1 2026 in Review
335 of the 8,172 institutional investors tracked by Wall St. Rank reported a position in MasterBrand (MBC) for Q1 2026, worth a combined $1.29B — down 21% from $1.62B a quarter earlier.
Buyers outnumbered sellers: 55 funds opened new MBC positions and 46 closed out — a net gain of 9 holders — while 94 added to existing stakes and 93 trimmed.
The largest buyer was Apollo Management Holdings, opening a new position worth an estimated $28.5M. The largest seller was Diameter Capital Partners, cutting an estimated $48.3M.
- 335 institutional investors held MasterBrand (MBC) as of Q1 2026, up from 331 in Q4 2025.
- Funds reported $1.29B of MasterBrand stock for Q1 2026, down 21% quarter-over-quarter.
- 55 funds opened new MasterBrand positions in Q1 2026 and 46 closed out, a net change of +9 holders.
- The largest MasterBrand buyer in Q1 2026 was Apollo Management Holdings, an estimated $28.5M added.
- The largest MasterBrand seller in Q1 2026 was Diameter Capital Partners, an estimated $48.3M sold.
Based on aggregated 13F filings for Q1 2026.