Company · Ownership research

MasterBrand, Inc. MBC

CIK 0001941365 · CUSIP 57638P104

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 57638P104 (MBC), not CUSIP 57638P904 (MBC), CUSIP 57638P954 (MBC), and does not merge CUSIPs.

This page lists the top 20 of 357 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$371.78M 20,052,688 shares	0.01%	—	SEC filing ↗ Nov 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$191.16M 10,310,904 shares	0.00%	-329.27K(-3.10%)Reduced	SEC filing ↗ Nov 13, 2024	▾
03	Gates Capital Management, Inc. CIK 1312908 · View history	$163.72M 8,830,771 shares	4.65%	-401.78K(-4.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
04	Pacer Advisors, Inc. CIK 1616667 · View history	$95.75M 5,164,670 shares	0.20%	-1.60M(-23.70%)Reduced	SEC filing ↗ Nov 12, 2024	▾
05	Thrivent Financial for Lutherans CIK 314984 · View history	$91.33M 4,926,048 shares	0.17%	+518.44K(+11.80%)Added	SEC filing ↗ Nov 7, 2024	▾
06	STATE STREET CORP CIK 93751 · View history	$91.18M 4,917,949 shares	0.00%	-24.79K(-0.50%)Reduced	SEC filing ↗ Nov 14, 2024	▾
07	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$88.06M 4,749,951 shares	0.02%	+203.80K(+4.50%)Added	SEC filing ↗ Nov 7, 2024	▾
08	FULLER & THALER ASSET MANAGEMENT, INC. CIK 1082327 · View history	$65.06M 3,509,380 shares	0.26%	+321.11K(+10.10%)Added	SEC filing ↗ Nov 13, 2024	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$63.05M 3,400,366 shares	0.01%	+135.69K(+4.20%)Added	SEC filing ↗ Nov 12, 2024	▾
10	Boston Partners CIK 1386060 · View history	$53.29M 2,873,815 shares	0.06%	+2.87MNew	SEC filing ↗ Nov 12, 2024	▾
11	PZENA INVESTMENT MANAGEMENT LLC CIK 1027796 · View history	$52.63M 2,838,716 shares	0.17%	+35.50K(+1.30%)Added	SEC filing ↗ Nov 8, 2024	▾
12	MANGROVE PARTNERS IM, LLC CIK 1535392 · View history	$42.95M 2,316,843 shares	3.83%	-370.33K(-13.80%)Reduced	SEC filing ↗ Nov 14, 2024	▾
13	MORGAN STANLEY CIK 895421 · Amended · View history	$42.75M 2,305,629 shares	0.00%	-18.09K(-0.80%)Reduced	SEC filing ↗ May 14, 2025	▾
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$38.80M 2,092,694 shares	0.01%	+330.87K(+18.80%)Added	SEC filing ↗ Nov 12, 2024	▾
15	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$38.47M 2,075,113 shares	0.01%	+248.00K(+13.60%)Added	SEC filing ↗ Nov 14, 2024	▾
16	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$28.11M 1,515,973 shares	0.04%	+73.95K(+5.10%)Added	SEC filing ↗ Nov 13, 2024	▾
17	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$26.44M 1,425,966 shares	0.01%	+528.54K(+58.90%)Added	SEC filing ↗ Nov 14, 2024	▾
18	Invesco Ltd. CIK 914208 · View history	$25.38M 1,368,691 shares	0.00%	-322.98K(-19.10%)Reduced	SEC filing ↗ Nov 12, 2024	▾
19	NORTHERN TRUST CORP CIK 73124 · View history	$24.74M 1,334,204 shares	0.00%	+19.09K(+1.50%)Added	SEC filing ↗ Nov 13, 2024	▾
20	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$22.04M 1,188,736 shares	0.48%	+31.49K(+2.70%)Added	SEC filing ↗ Nov 14, 2024	▾

Showing 20 / 357 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

357

Cancelled or null records excluded

Disclosed shares

115,263,155

Not deduplicated across managers

Disclosed value

$2.14B

Not market cap or free float

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.

MasterBrand, Inc. · Q3 2024

Explore all 357 reporting institutions.

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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.