Hudson Bay Capital Management’s Builders FirstSource BLDR Stock Holding History

Hudson Bay Capital Management’s Portfolio BLDR Stock Details BLDR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-16,100	Closed	-$1.88M	–	1269
2025 Q2	$1.88M	Sell	16,100 -44,200	-73%	-$5.1M	0.01%	817
2025 Q1	$7.53M	Buy	60,300 +53,900	+842%	+$7.84M	0.02%	489
2024 Q4	$915K	Hold	6,400	–	–	﹤0.01%	767
2024 Q3	$1.24M	Buy	+6,400	New	+$1.06M	0.01%	632
2023 Q4	–	Sell	-20,000	Closed	-$2.49M	–	735
2023 Q3	$2.49M	Buy	+20,000	New	+$2.76M	0.02%	437

Other funds holding BLDR

BlackRock New York $6.73T AUM 46.02% 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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

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

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Hudson Bay Capital Management's BLDR Position: Q2 2026 in Review

Hudson Bay Capital Management reduced its Builders FirstSource (BLDR) stake by 46% in Q2 2026, selling an estimated $1.48M and leaving 21,867 shares worth $1.96M. The position accounts for 0.01% of the portfolio, ranked #823.

Hudson Bay Capital Management first reported a position in BLDR in Q2 2015 and has held it in 23 quarters since. The position peaked at $16.4M in Q1 2025. 671 funds tracked by Wall St. Rank hold BLDR as of Q2 2026.

Hudson Bay Capital Management held 21,867 shares of Builders FirstSource worth $1.96M as of Q2 2026.
Hudson Bay Capital Management sold 18,496 Builders FirstSource shares in Q2 2026, an estimated $1.48M.
Builders FirstSource made up 0.01% of Hudson Bay Capital Management's portfolio in Q2 2026, its #823 holding.
Hudson Bay Capital Management first reported a position in Builders FirstSource in Q2 2015 and has held it in 23 quarters since.
Hudson Bay Capital Management's Builders FirstSource position peaked at $16.4M in Q1 2025.
671 funds tracked by Wall St. Rank held Builders FirstSource as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.