MasterBrand, Inc. MBC
CIK 0001941365 · CUSIP 57638P104
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $205.99M 18,845,932 shares | 0.00% | -631.48K(-3.20%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 02 | Gates Capital Management, Inc. CIK 1312908 · View history | $131.43M 12,024,816 shares | 3.97% | +2.36M(+24.40%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 03 | VANGUARD GROUP INC CIK 102909 · View history | $100.38M 9,183,991 shares | 0.00% | +8.86K(+0.10%)Added | SEC filing ↗ Aug 11, 2025 | ▾ |
| 04 | Boston Partners CIK 1386060 · Amended · View history | $90.63M 8,280,239 shares | 0.10% | +452.53K(+5.80%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 05 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $67.13M 6,142,022 shares | 0.02% | +490.05K(+8.70%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 06 | FMR LLC CIK 315066 · View history | $63.72M 5,830,054 shares | 0.00% | +677.84K(+13.20%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 07 | STATE STREET CORP CIK 93751 · View history | $53.87M 4,928,889 shares | 0.00% | -2.91K(-0.10%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 08 | Thrivent Financial for Lutherans CIK 314984 · Amended · View history | $51.77M 4,736,593 shares | 0.11% | -839.44K(-15.10%)Reduced | SEC filing ↗ Aug 26, 2025 | ▾ |
| 09 | Coliseum Capital Management, LLC CIK 1409751 · View history | $47.04M 4,304,081 shares | 3.38% | +1.13M(+35.40%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 10 | PZENA INVESTMENT MANAGEMENT LLC CIK 1027796 · View history | $45.41M 4,154,751 shares | 0.15% | +1.30M(+45.30%)Added | SEC filing ↗ Jul 25, 2025 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $32.78M 2,998,737 shares | 0.00% | +4.88K(+0.20%)Added | SEC filing ↗ Aug 8, 2025 | ▾ |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $27.16M 2,484,464 shares | 0.00% | -25.81K(-1.00%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 13 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history | $26.86M 2,457,630 shares | 0.01% | +940.34K(+62.00%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 14 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $22.44M 2,052,755 shares | 0.03% | +501.08K(+32.30%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 15 | NORTHERN TRUST CORP CIK 73124 · View history | $16.22M 1,484,003 shares | 0.00% | -16.74K(-1.10%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 16 | MORGAN STANLEY CIK 895421 · View history | $15.85M 1,450,051 shares | 0.00% | +4.33K(+0.30%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 17 | Sixth Street Partners Management Company, L.P. CIK 1812095 · View history | $15.30M 1,400,000 shares | 1.21% | 0(0.00%)Unchanged | SEC filing ↗ Aug 12, 2025 | ▾ |
| 18 | De Lisle Partners LLP CIK 2011184 · View history | $12.24M 1,119,149 shares | 1.73% | -88.90K(-7.40%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 19 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $12.08M 1,105,403 shares | 0.00% | -151.48K(-12.10%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 20 | TEACHER RETIREMENT SYSTEM OF TEXAS CIK 796848 · View history | $11.68M 1,068,481 shares | 0.05% | +840.90K(+369.50%)Added | SEC filing ↗ Aug 1, 2025 | ▾ |
Showing 20 / 326 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 326 reporting institutions.
This page includes 20 of 326 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 326 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"57638P104","quarter":"2025Q2","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.