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MBC · MasterBrand, Inc.

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$9.11 -0.03 (-0.33%) At close · Aug 21
Market Cap
$1.86B
Shares
203.49M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 348
Total Value: $2,272,651,817
Total Shares: 220,860,257

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 348 13F filers · Δ vs Mar 31, 2026
Top Holder
14.3%
Sep 2023 → Jun 2026 · range 12.5% – 18.5%
+1.8 pts
Top 5
37.9%
Sep 2023 → Jun 2026 · range 36.2% – 45.5%
+1.6 pts
Top 10
56.9%
Sep 2023 → Jun 2026 · range 52.3% – 65.4%
+4.6 pts
HHI
470
Sep 2023 → Jun 2026 · range 413 – 621
Broadly held+57

Quarterly Activity

vs Mar 31, 2026
New
74
Increased
149
Decreased
53
Sold Out
62
Unchanged
72
Holder count: +12
Institutional value: +76.5%
Shares held: +42.6%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 350
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1941365 CUSIP 57638P104 13F (30d) 312 filings 293 filers Visit website Investor relations