MASTERBRAND INC (MBC): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in MBC · Consumer Discretionary. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
11
13F filers
Aggregate Value
$182.0M
Across holders
Last Price
$6.43
2026-10-19
Sector
Consumer Discretionary
GICS
Quarterly fund activity4 increased7 reduced7 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| PZENA INVESTMENT MANAGEMENT LLC CIK 0001027796 | Institutional Manager | 15.33M | $157.7M | 86.7% | 0.5% | Added | +$118.5M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 881K | $9.1M | 5.0% | 0.0% | Reduced | $-9.0M | Q2 2026 |
| Ancora Advisors, LLC CIK 0001446114 | Hedge Fund | 672K | $6.9M | 3.8% | 0.1% | Added | $-1.3M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 316K | $3.3M | 1.8% | 0.0% | Added | +$2.0M | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 214K | $2.2M | 1.2% | 0.0% | Reduced | +$2.1M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 107K | $1.1M | 0.6% | 0.0% | Reduced | $-3.8M | Q2 2026 |
| Holocene Advisors, LP CIK 0001700574 | Hedge Fund | 61K | $625K | 0.3% | 0.0% | Reduced | $-1.8M | Q2 2026 |
| GAMCO INVESTORS, INC. ET AL CIK 0000807249 | Institutional Manager | 56K | $575K | 0.3% | 0.0% | Reduced | $-229K | Q2 2026 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 39K | $398K | 0.2% | 0.0% | Reduced | $-320K | Q2 2026 |
| Fulcrum Asset Management LLP CIK 0001353395 | Hedge Fund | 10K | $99K | 0.1% | 0.0% | Added | — | Q2 2026 |
Added
Institutional Manager
$157.7M· 86.7% of total· 0.5% port· 15.33M sh· +$118.5M QoQ· Q2 2026
Reduced
Hedge Fund
$9.1M· 5.0% of total· 0.0% port· 881K sh· $-9.0M QoQ· Q2 2026
Added
Hedge Fund
$6.9M· 3.8% of total· 0.1% port· 672K sh· $-1.3M QoQ· Q2 2026
Added
Hedge Fund
$3.3M· 1.8% of total· 0.0% port· 316K sh· +$2.0M QoQ· Q2 2026
Reduced
Hedge Fund
$2.2M· 1.2% of total· 0.0% port· 214K sh· +$2.1M QoQ· Q2 2026
Reduced
Hedge Fund
$1.1M· 0.6% of total· 0.0% port· 107K sh· $-3.8M QoQ· Q2 2026
Reduced
Hedge Fund
$625K· 0.3% of total· 0.0% port· 61K sh· $-1.8M QoQ· Q2 2026
Reduced
Institutional Manager
$575K· 0.3% of total· 0.0% port· 56K sh· $-229K QoQ· Q2 2026
Reduced
Hedge Fund
$398K· 0.2% of total· 0.0% port· 39K sh· $-320K QoQ· Q2 2026
Added
Hedge Fund
$99K· 0.1% of total· 0.0% port· 10K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$9K· 0.0% of total· 0.0% port· 849 sh· $-19K QoQ· Q2 2026
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Recent insider activity
Form 4 purchases and sales · 24 Jul 2026 – 21 Oct 20260 buyers · $02 sellers · $516K3 transactions
| Insider ⇅ | Trades ⇅ | Bought ⇅ | Sold ⇅ | Largest ⇅ | Latest ▼ | |
|---|---|---|---|---|---|---|
| Young Mark A. VP, Chief Accounting Officer | 2 0 buy · 2 sell | — | $55K | $28K | 25 Aug 2026SEC ↗ | |
| Wanninger Kurt EVP & Chief Operations Officer | 1 0 buy · 1 sell | — | $461K | $461K | 11 Aug 2026SEC ↗ |
Distinct buyers and sellers may overlap. “Largest” is the largest reported transaction value in this window. Expand a row to see up to five recent filings.