ACK Asset Management’s MasterBrand MBC Stock Holding History

ACK Asset Management’s Portfolio MBC Stock Details MBC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$38.1M	Hold	3,700,000	–	–	4.45%	13
2026 Q1	$30.7M	Buy	3,700,000 +1,400,000	+61%	+$15.1M	3.84%	15
2025 Q4	$25.4M	Hold	2,300,000	–	–	3.19%	18
2025 Q3	$30.3M	Buy	+2,300,000	New	+$28.4M	3.79%	15
2025 Q2	–	Sell	-1,302,500	Closed	-$17M	–	24
2025 Q1	$17M	Sell	1,302,500 -172,500	-12%	-$2.62M	2.79%	15
2024 Q4	$21.5M	Buy	1,475,000 +825,000	+127%	+$14.1M	2.89%	15
2024 Q3	$12.1M	Buy	+650,000	New	+$10.6M	1.49%	16

Other funds holding MBC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Pzena Investment Management New York $34.1B AUM 23.81% 1-Year Est. Return

CCM

Coliseum Capital Management Rowayton, Connecticut $1.16B AUM 23.26% 1-Year Est. Return

GCM

Gates Capital Management New York $4.16B AUM 21% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

RCM

Redwood Capital Management New York $927M AUM 153.64% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Pertento Partners London, United Kingdom $1.86B AUM 53.86% 1-Year Est. Return

ACK Asset Management's MBC Position: Q2 2026 in Review

ACK Asset Management held its MasterBrand (MBC) position steady in Q2 2026 at 3,700,000 shares worth $38.1M. The position accounts for 4.45% of the portfolio, ranked #13.

ACK Asset Management first reported a position in MBC in Q3 2024 and has held it in 7 quarters since. 347 funds tracked by Wall St. Rank hold MBC as of Q2 2026.

ACK Asset Management held 3,700,000 shares of MasterBrand worth $38.1M as of Q2 2026.
ACK Asset Management left its MasterBrand share count unchanged in Q2 2026.
MasterBrand made up 4.45% of ACK Asset Management's portfolio in Q2 2026, its #13 holding.
ACK Asset Management first reported a position in MasterBrand in Q3 2024 and has held it in 7 quarters since.
347 funds tracked by Wall St. Rank held MasterBrand as of Q2 2026.

Based on ACK Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.