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MasterBrand
MBC

336 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.

New
Increased
Maintained
Reduced
Closed

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: 324 → 336 (+12)

Holders
336
Holders Change
+12
Holders Change %
+3.7%
% of All Funds
4.41%
Holding in Top 10
7
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+40%
% of All Funds
0.09%
New
55
Increased
106
Reduced
82
Closed
38
Calls
$52K
Puts
$7K
Net Calls
+$45K
Net Calls Change
+$3K

Top Buyers

1
DCP
Diameter Capital Partners
New York
+$50.2M
2
CCM
Coliseum Capital Management
Connecticut
+$40.3M
3
AAM
ACK Asset Management
Connecticut
+$28.4M
4
SSP
Sixth Street Partners
Texas
+$24M
5
SCM
Stonehill Capital Management
New York
+$18.3M

Top Sellers

1
Thrivent Financial for Lutherans
Thrivent Financial for Lutherans
Minnesota
-$46.6M
2
Fidelity Investments
Fidelity Investments
Massachusetts
-$26.3M
3
GCM
Gates Capital Management
New York
-$20.4M
4
Millennium Management
Millennium Management
New York
-$5.49M
5
RA
Royce & Associates
New York
-$3.06M
Name Holding Trade Value Shares
Change 		Change in
Stake
AllianceBernstein
76
AllianceBernstein
Tennessee
$2.02M -$1.47K -119 -0.1%
Citigroup
77
Citigroup
New York
$1.8M -$303K -24,537 -15%
ETC
78
Exchange Traded Concepts
Oklahoma
$1.6M -$8.52K -689 -0.6%
T. Rowe Price Associates
79
T. Rowe Price Associates
Maryland
$1.55M +$59.5K +4,816 +4%
Mitsubishi UFJ Trust & Banking
80
Mitsubishi UFJ Trust & Banking
Japan
$1.55M -$877K -70,938 -38%
California State Teachers Retirement System (CalSTRS)
81
California State Teachers Retirement System (CalSTRS)
California
$1.55M +$74 +6 +0%
AIM
82
AXA Investment Managers
France
$1.51M +$1.41M +114,371 New
Harris Associates
83
Harris Associates
Illinois
$1.45M -$26.8K -2,165 -2%
New York State Common Retirement Fund
84
New York State Common Retirement Fund
New York
$1.38M +$807K +65,300 +167%
Rafferty Asset Management
85
Rafferty Asset Management
New York
$1.32M +$688K +55,639 +125%
A
86
AlphaQuest
New York
$1.31M +$105K +8,504 +9%
Verition Fund Management
87
Verition Fund Management
Connecticut
$1.29M +$10.2K +822 +0.8%
Citadel Advisors
88
Citadel Advisors
Florida
$1.25M -$1.13M -91,117 -49%
Federated Hermes
89
Federated Hermes
Pennsylvania
$1.22M +$192K +15,535 +20%
Comerica Bank
90
Comerica Bank
Texas
$1.18M +$80.6K +6,520 +8%
PNC Financial Services Group
91
PNC Financial Services Group
Pennsylvania
$1.08M -$332K -26,841 -25%
GI
92
GAMCO Investors
Connecticut
$1.07M -$91.5K -7,400 -8%
BNP Paribas Financial Markets
93
BNP Paribas Financial Markets
France
$1.05M +$770K +62,265 +359%
Millennium Management
94
Millennium Management
New York
$1.04M -$5.49M -443,598 -85%
MIM
95
MetLife Investment Management
New Jersey
$1.01M – – –
D.E. Shaw & Co
96
D.E. Shaw & Co
New York
$970K -$1.37M -110,594 -60%
SOADOR
97
State of Alaska Department of Revenue
Alaska
$927K -$62.4K -5,043 -7%
IMRF
98
Illinois Municipal Retirement Fund
Illinois
$869K -$5.01K -405 -0.6%
Manulife (Manufacturers Life Insurance)
99
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$846K -$33.3K -2,693 -4%
Creative Planning
100
Creative Planning
Kansas
$812K +$318K +25,708 +72%
2 3
4
5 6

MBC Hedge Fund Activity: Q3 2025 in Review

336 of the 7,619 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.

  • 336 institutional investors held MasterBrand (MBC) as of Q3 2025, up from 324 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.