Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MBC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 19.4M | $160.8M | -0.1% | 15.121% | 0.00% |
| 2 | Coliseum Capital Management, LLC | 12.7M | $105.5M | +17.8% | 9.919% | 8.65% |
| 3 | Gates Capital Management, Inc. | 10.3M | $86.0M | +12.2% | 8.085% | 2.97% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 7.0M | $58.3M | +6.8% | 5.478% | 0.01% |
| 5 | Boston Partners | 6.7M | $55.9M | -22.6% | 5.257% | 0.06% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 5.7M | $47.6M | β | 4.474% | 0.00% |
| 7 | Pertento Partners LLP | 5.0M | $41.3M | +28.0% | 3.879% | 4.38% |
| 8 | Sixth Street Partners Management Company, L.P. | 4.9M | $40.8M | 0.0% | 3.833% | 5.74% |
| 9 | STATE STREET CORP | 4.9M | $40.6M | -1.3% | 3.822% | 0.00% |
| 10 | FMR LLC | 4.3M | $36.1M | +16.7% | 3.391% | 0.00% |
| 11 | PZENA INVESTMENT MANAGEMENT LLC | 3.8M | $31.7M | +0.7% | 2.980% | 0.10% |
| 12 | ACK Asset Management LLC | 3.7M | $30.7M | +60.9% | 2.891% | 3.84% |
| 13 | COOKE & BIELER LP | 3.6M | $29.9M | +27.0% | 2.809% | 0.34% |
| 14 | UBS ASSET MANAGEMENT AMERICAS INC | 3.1M | $26.0M | +0.3% | 2.449% | 0.01% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 3.1M | $25.8M | +2.9% | 2.421% | 0.00% |
| 16 | GOLDMAN SACHS GROUP INC | 3.1M | $25.5M | +17.1% | 2.393% | 0.00% |
| 17 | Apollo Management Holdings, L.P. | 2.6M | $21.9M | β | 2.061% | 0.36% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.5M | $21.1M | +1.2% | 1.987% | 0.00% |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.5M | $20.4M | β | 1.920% | 0.00% |
| 20 | Monarch Alternative Capital LP | 2.0M | $16.6M | β | 1.563% | 2.83% |
| 21 | RENAISSANCE TECHNOLOGIES LLC | 1.8M | $14.6M | -22.9% | 1.369% | 0.02% |
| 22 | CANYON CAPITAL ADVISORS LLC | 1.7M | $14.1M | -13.7% | 1.322% | 1.82% |
| 23 | Nixon Capital, LLC | 1.6M | $13.7M | +16.3% | 1.289% | 4.68% |
| 24 | Decagon Asset Management LLP | 1.5M | $12.9M | +102.8% | 1.209% | 3.33% |
| 25 | Diameter Capital Partners LP | 1.5M | $12.8M | -74.3% | 1.208% | 3.67% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MBC β a direct measure of their conviction.
Filings activity in MBC during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 329 | +1.5% | 109.77% | 28.35 pp | $1.25B | 21% |
| Q4 2025 | 324 | 1.8% | 138.12% | 11.14 pp | $1.57B | 7.5% |
| Q3 2025 | 330 | +2.8% | 149.26% | +41.23 pp | $1.70B | +38% |
| Q2 2025 | 321 | 4.2% | 108.03% | 22.51 pp | $1.23B | 17% |
| Q1 2025 | 335 | 5.9% | 130.54% | 7.41 pp | $1.48B | 5.4% |
| Q4 2024 | 356 | +2.3% | 137.95% | 36.32 pp | $1.57B | 21% |
| Q3 2024 | 348 | 0.9% | 174.27% | +36.41 pp | $1.98B | +26% |
| Q2 2024 | 351 | β | 137.86% | β | $1.57B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MBC stock.
Based on Q1 2026 13F filings, institutional ownership of MasterBrand, Inc. stands at 109.8%, held across 329 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MBC, with approximately 19,352,651 shares worth $0.16B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of MBC, including RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for MBC is 40 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
59 institutions opened new positions in MBC during Q1 2026, while 54 fully exited. 39 added to existing positions and 229 trimmed.
MBC institutional ownership fell by 28.35 percentage points quarter-over-quarter, with a net change of +5 holders.
The top 10 institutions account for 53.9% of all reported 13F value in MBC, and the top 25 account for 79.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
MasterBrand, Inc. (MBC) Institutional Ownership