# MASTERBRAND INC COMMON STOCK

MASTERBRAND INC COMMON STOCK is a security (CUSIP 57638P104) tracked across SEC portfolio filings. 350 institutional managers reported $1.2B on Form 13F as of 2026-06-30; 26 registered fund positions totaling $35.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MASTERBRAND INC
- Class: COMMON STOCK
- CUSIP: 57638P104
- Asset category: EC
- 13F holders: 350
- 13F value: $1.2B
- 13F period: 2026-06-30
- N-PORT fund positions: 26
- N-PORT value: $35.2M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 350 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $160.8M | 19,352,651 |
| [Coliseum Capital Management, LLC](https://search.stillhousedata.com/firm/158120) | Rowayton, CT | $105.5M | 12,694,710 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $100.2M | 9,079,055 |
| [Gates Capital Management, Inc.](https://search.stillhousedata.com/firm/137842) | New York, NY | $86.0M | 10,346,864 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $58.3M | 7,010,428 |
| [Pertento Partners LLP](https://search.stillhousedata.com/firm/317498) | LONDON, X0 | $41.3M | 4,964,821 |
| Sixth Street Partners Management Company, L.P. | Dallas, TX | $40.8M | 4,905,383 |
| STATE STREET CORP | BOSTON, MA | $40.6M | 4,891,066 |
| FMR LLC | BOSTON, MA | $36.1M | 4,340,250 |
| PZENA INVESTMENT MANAGEMENT LLC | New York, NY | $31.7M | 3,814,014 |
| [ACK Asset Management LLC](https://search.stillhousedata.com/firm/155136) | GREENWICH, CT | $30.7M | 3,700,000 |
| [COOKE & BIELER LP](https://search.stillhousedata.com/firm/113859) | PHILADELPHIA, PA | $26.3M | 2,551,527 |
| UBS ASSET MANAGEMENT AMERICAS INC | CHICAGO, IL | $26.0M | 3,134,245 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $25.8M | 3,098,501 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $25.5M | 3,062,879 |

## Top fund holders (N-PORT)

_Showing 15 of 26 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $11.8M | 1.45% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $9.0M | 5.11% |
| [Ancora/Thelen Small-Mid Cap Fund](https://search.stillhousedata.com/fund/S000039307) | ANCORA TRUST | $2.7M | 128.00% |
| [Paradigm Micro-Cap Fund](https://search.stillhousedata.com/fund/S000020362) | PARADIGM FUNDS | $2.0M | 149.00% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $1.8M | 8.20% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.7M | 3.61% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $982K | 9.96% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $742K | 0.99% |
| [Federated Hermes Opportunistic High Yield Bond Fund](https://search.stillhousedata.com/fund/S000009061) | Federated Hermes High Yield Trust | $625K | 15.24% |
| [AB All Market Total Return Portfolio](https://search.stillhousedata.com/fund/S000010512) | AB PORTFOLIOS | $604K | 13.95% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $603K | 0.10% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $574K | 6.78% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $522K | 0.17% |
| [VANGUARD TAX-MANAGED BALANCED FUND](https://search.stillhousedata.com/fund/S000004383) | VANGUARD TAX-MANAGED FUNDS | $395K | 0.35% |
| Gabelli Dividend & Income Trust | Gabelli Dividend & Income Trust | $374K | 1.41% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/57638P104.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.