MasterbrandMBC
13F holders, Q1 2026 (March 31)335holders +4
47new positions
44sold out
7famous investors
$8.31avg. 13F price*
At the end of Q1 2026, 335 institutions reported holding Masterbrand Inc. (MBC) in their 13F filings, up 4 from Q4 2025. 47 opened new positions and 44 sold out. The largest holders were BlackRock, Inc. ($160.8M), Coliseum Capital Management, LLC ($105.5M) and Gates Capital Management, Inc. ($86.0M). 7 famous investors held it, including Bill Miller (0.2% of Miller Value Partners's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- Masterbrand Inc.
- CUSIP
- 57638P104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 47 | $79.7M |
| Exits | 44 | $17.2M |
All 13F filers, Q4 2025 → Q1 2026: 23,823,490 shares bought and 15,701,191 shares sold, net +8,122,299 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 335 holders
| BlackRock, Inc. | 0.00% | Reduce -0.1% | 19,352,651 | $160.8M |
| Coliseum Capital Management, LLC | 8.65% | Add +17.8% | 12,694,710 | $105.5M |
| Gates Capital Management, Inc. | 2.97% | Add +12.2% | 10,346,864 | $86.0M |
| Dimensional Fund Advisors LP | 0.01% | Add +6.8% | 7,010,428 | $58.3M |
| Boston Partners | 0.06% | Reduce -22.6% | 6,727,552 | $55.9M |
| Vanguard Capital Management LLC | 0.00% | — | 5,725,492 | $47.6M |
| Pertento Partners LLP | 4.38% | Add +28.0% | 4,964,821 | $41.3M |
| Sixth Street Partners Management Company, L.P. | 5.74% | No change | 4,905,383 | $40.8M |
| State Street Corp. | 0.00% | Reduce -1.3% | 4,891,066 | $40.6M |
| FMR LLC | 0.00% | Add +16.7% | 4,340,250 | $36.1M |
| Pzena Investment Management LLC | 0.10% | Add +0.7% | 3,814,014 | $31.7M |
| ACK Asset Management LLC | 3.84% | Add +60.9% | 3,700,000 | $30.7M |
| Cooke & Bieler LP | 0.34% | Add +27.0% | 3,594,545 | $29.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Add +0.3% | 3,134,245 | $26.0M |
| Geode Capital Management, LLC | 0.00% | Add +2.9% | 3,098,501 | $25.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +17.1% | 3,062,879 | $25.5M |
| Apollo Management Holdings, L.P. | 0.42% | New | 2,638,219 | $21.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.2% | 2,542,961 | $21.1M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,457,785 | $20.4M |
| Monarch Alternative Capital LP | 4.50% | New | 2,000,000 | $16.6M |
| Renaissance Technologies | 0.02% | Reduce -22.9% | 1,752,263 | $14.6M |
| Canyon Capital Advisors LLC | 1.82% | Reduce -13.7% | 1,691,901 | $14.1M |
| Nixon Capital, LLC | 4.68% | Add +16.3% | 1,649,501 | $13.7M |
| Decagon Asset Management LLP | 3.37% | Add +102.8% | 1,546,997 | $12.9M |
| Diameter Capital Partners LP | 2.88% | Reduce -74.3% | 1,545,571 | $12.8M |
| Stonehill Capital Management LLC | 6.17% | Reduce -18.2% | 1,456,640 | $12.1M |
| Northern Trust Corp. | 0.00% | Reduce -0.4% | 1,354,929 | $11.3M |
| Atlas FRM LLC | 0.71% | New | 1,300,000 | $10.8M |
| Redwood Capital Management, LLC | 1.81% | New | 1,286,097 | $10.7M |
| Morgan Stanley | 0.00% | Reduce -18.4% | 1,147,497 | $9.5M |
| Paradigm Capital Management Inc. | 0.34% | Add +85.9% | 1,082,091 | $9.0M |
| Melqart Asset Management (UK) Ltd | 0.88% | Add +4967.1% | 1,073,202 | $8.9M |
| De Lisle Partners LLP | 1.06% | Reduce -4.8% | 1,064,941 | $8.9M |
| Glazer Capital, LLC | 0.20% | Add +1406.7% | 1,065,129 | $8.9M |
| Invesco Ltd. | 0.00% | Add +17.1% | 926,402 | $7.7M |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.0% | 848,008 | $7.0M |
| Marathon Asset Management Ltd | 0.27% | Add +13.5% | 842,902 | $7.0M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 830,003 | $6.9M |
| Bridgeway Capital Management, LLC | 0.13% | Add +1.8% | 766,371 | $6.4M |
| Polar Capital Holdings Plc | 0.03% | Reduce -10.8% | 743,646 | $6.2M |
| UBS Group AG | 0.00% | Reduce -51.9% | 668,719 | $5.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -31.9% | 675,272 | $5.5M |
| Principal Financial Group Inc. | 0.00% | Add +2.0% | 616,268 | $5.1M |
| Allianz Asset Management GmbH | 0.01% | Add +96.0% | 530,131 | $4.4M |
| Victory Capital Management Inc. | 0.00% | Add +6.1% | 520,365 | $4.3M |
| Bank of America Corp. | 0.00% | Add +37.8% | 506,110 | $4.2M |
| Balyasny Asset Management L.P. | 0.01% | New | 501,700 | $4.2M |
| Empowered Funds, LLC | 0.03% | Add +3.1% | 476,219 | $4.0M |
| Millennium Management | 0.00% | Add +109.4% | 472,867 | $3.9M |
| Public Sector Pension Investment Board | 0.01% | Add +3.3% | 453,540 | $3.8M |
| Pictet Asset Management Holding SA | 0.00% | Reduce -17.3% | 451,584 | $3.8M |
| North Growth Management Ltd. | 0.55% | Add +97.3% | 430,000 | $3.6M |
| Peregrine Capital Management LLC | 0.13% | Reduce -8.8% | 417,430 | $3.5M |
| Ancora Advisors LLC | 0.07% | Reduce -48.8% | 413,023 | $3.4M |
| Quantinno Capital Management LP | 0.01% | Add +613.4% | 397,175 | $3.3M |
| First Trust Advisors LP | 0.00% | Add +49.6% | 382,812 | $3.2M |
| Sei Investments Co. | 0.00% | Add +20.3% | 378,361 | $3.1M |
| Mirabella Financial Services LLP | 0.32% | New | 377,355 | $3.1M |
| Rhumbline Advisers | 0.00% | Add +1.0% | 363,474 | $3.0M |
| EVR Research LP | 1.42% | Add +50.0% | 300,000 | $2.5M |
| Teacher Retirement System of Texas | 0.01% | Reduce -82.5% | 299,995 | $2.5M |
| Deutsche Bank AG | 0.00% | Add +4.2% | 299,762 | $2.5M |
| Legal & General Group Plc | 0.00% | Reduce -8.0% | 294,867 | $2.5M |
| Hudson Bay Capital Management LP | 0.02% | New | 293,325 | $2.4M |
| Nuveen, LLC | 0.00% | Add +0.6% | 283,076 | $2.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -5.4% | 280,289 | $2.3M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Reduce -1.9% | 255,854 | $2.1M |
| Swiss National Bank | 0.00% | No change | 249,900 | $2.1M |
| AQR Capital Management | 0.00% | Add +42.1% | 241,952 | $2.0M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -57.3% | 236,588 | $2.0M |
| Royce & Associates LP | 0.02% | Reduce -10.7% | 235,570 | $2.0M |
| Holocene Advisors, LP | 0.00% | New | 234,433 | $1.9M |
| American Century Companies Inc. | 0.00% | Reduce -24.7% | 233,932 | $1.9M |
| D. E. Shaw & Co. | 0.00% | Add +120.7% | 221,840 | $1.8M |
| Polar Asset Management Partners Inc. | 0.06% | No change | 213,352 | $1.8M |
| Alliancebernstein L.P. | 0.00% | Reduce -0.1% | 153,503 | $1.7M |
| Denali Advisors LLC | 0.16% | No change | 169,100 | $1.4M |
| Raymond James Financial Inc. | 0.00% | Add +6.2% | 167,504 | $1.4M |
| California State Teachers Retirement System | 0.00% | Add +34.5% | 165,489 | $1.4M |
| Truist Financial Corp. | 0.00% | Reduce -0.9% | 155,054 | $1.3M |
| T. Rowe Price Associates Inc. | 0.00% | Add +22.5% | 151,281 | $1.3M |
| Citigroup Inc. | 0.00% | Add +16.4% | 146,786 | $1.2M |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 146,695 | $1.2M |
| RBF Capital, LLC | 0.06% | Reduce -63.1% | 140,000 | $1.2M |
| Prudential Financial Inc. | 0.00% | Reduce -37.1% | 132,390 | $1.1M |
| EFG International AG | 0.02% | Add +28.3% | 130,759 | $1.1M |
| Weiss Asset Management LP | 0.03% | Reduce -70.2% | 130,517 | $1.1M |
| Barclays PLC | 0.00% | Reduce -56.2% | 119,757 | $995K |
| SG Americas Securities, LLC | 0.00% | Reduce -83.8% | 119,639 | $994K |
| Creative Planning | 0.00% | Add +2.4% | 118,566 | $985K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 117,406 | $976K |
| K2 Principal Fund, L.P. | 0.27% | Add +677.2% | 105,046 | $873K |
| Miller Value Partners | 0.23% | New | 104,854 | $871K |
| Federated Hermes, Inc. | 0.00% | Add +8.3% | 100,863 | $838K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -15.7% | 98,873 | $822K |
| Boussard & Gavaudan Investment Management LLP | 0.18% | Add +71.2% | 93,024 | $773K |
| Dark Forest Capital Management LP | 0.07% | Add +14.7% | 92,497 | $769K |
| Handelsbanken Fonder AB | 0.00% | Add +27.7% | 89,400 | $743K |
| LMR Partners LLP | 0.01% | New | 88,127 | $732K |
| Wells Fargo & Company | 0.00% | Reduce -51.5% | 86,669 | $720K |
"% of holder's portfolio" is MBC's weight in each manager's 13F, not the share of Masterbrand Inc. the manager owns.