Who owns MasterBrand, Inc.?
Institutional ownership of MBC from SEC Form 13F filings across 237 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
237
13F holders
$1.19B
value, 2026 filers
90.9%
of shares outstanding (116.4M sh)
46
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of MBC's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 31.6M | $324.7M | 0.0% | 24.7% | +63.1% |
| 2 | FMR LLC | 10.4M | $106.7M | 0.0% | 8.1% | +138.9% |
| 3 | Diameter Capital Partners LP | 9.6M | $98.4M | 7.9% | 7.5% | +518.5% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 8.8M | $90.9M | 0.0% | 6.9% | -22.8% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 5.1M | $52.8M | 0.0% | 4% | +65.6% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.1M | $42.6M | 0.0% | 3.2% | +68.6% |
| 7 | Monarch Alternative Capital LP | 3.7M | $38.1M | 5.4% | 2.9% | +85.0% |
| 8 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 3.1M | $32.2M | 0.0% | 2.4% | 0.0% |
| 9 | Sixth Street Partners Management Company, L.P. | 3.1M | $31.9M | 5.5% | 2.4% | -36.8% |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.1M | $31.9M | 0.0% | 2.4% | +21.8% |
| 11 | MORGAN STANLEY | 2.5M | $26.2M | 0.0% | 2% | +121.6% |
| 12 | FRANKLIN RESOURCES INC | 2.5M | $25.3M | 0.0% | 1.9% | +2794.9% |
| 13 | NORTHERN TRUST CORP | 2.2M | $23.0M | 0.0% | 1.7% | +65.3% |
| 14 | GOLDMAN SACHS GROUP INC | 2.0M | $20.3M | 0.0% | 1.5% | -35.5% |
| 15 | WELLS FARGO & COMPANY/MN | 1.4M | $14.5M | 0.0% | 1.1% | +1529.5% |
| 16 | Public Sector Pension Investment Board | 1.4M | $14.4M | 0.0% | 1.1% | +207.6% |
| 17 | UBS Group AG | 1.4M | $14.0M | 0.0% | 1.1% | +103.5% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 1.3M | $13.8M | 0.0% | 1% | +61.0% |
| 19 | Bank of New York Mellon Corp | 1.3M | $12.9M | 0.0% | 1% | +47.8% |
| 20 | Invesco Ltd. | 1.2M | $12.3M | 0.0% | 0.9% | +29.4% |
| 21 | PRINCIPAL FINANCIAL GROUP INC | 981,208 | $10.1M | 0.0% | 0.8% | +59.2% |
| 22 | Pictet Asset Management Holding SA | 678,468 | $7.0M | 0.0% | 0.5% | +50.2% |
| 23 | Ancora Advisors LLCNEW | 672,221 | $6.9M | 0.1% | 0.5% | new |
| 24 | VICTORY CAPITAL MANAGEMENT INC | 643,363 | $6.6M | 0.0% | 0.5% | +23.6% |
| 25 | CITIGROUP INC | 606,042 | $6.2M | 0.0% | 0.5% | +312.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.