CastleKnight Management’s Builders FirstSource BLDR Stock Holding History

CastleKnight 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 Q4	–	Sell	-2,800	Closed	-$340K	–	367
2025 Q3	$340K	Hold	2,800	–	–	0.01%	415
2025 Q2	$327K	Hold	2,800	–	–	0.01%	389
2025 Q1	$350K	Buy	+2,800	New	+$407K	0.01%	310
2022 Q2	–	Sell	-34,400	Closed	-$2.22M	–	255
2022 Q1	$2.22M	Buy	+34,400	New	+$2.5M	0.32%	58

Other funds holding BLDR

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

BWA

Brave Warrior Advisors New York $4.04B AUM 1.15% 1-Year Est. Return

CastleKnight Management's BLDR Position: Q4 2025 in Review

CastleKnight Management sold out of Builders FirstSource (BLDR) in Q4 2025, closing a stake of 2,800 shares — an estimated $340K sold.

CastleKnight Management first reported a position in BLDR in Q1 2022 and held it in 4 quarters. The position peaked at $2.22M in Q1 2022. 765 funds tracked by Wall St. Rank hold BLDR as of Q4 2025.

CastleKnight Management reported no remaining Builders FirstSource position as of Q4 2025 after selling out during the quarter.
CastleKnight Management sold 2,800 Builders FirstSource shares in Q4 2025, an estimated $340K.
CastleKnight Management first reported a position in Builders FirstSource in Q1 2022 and held it in 4 quarters.
CastleKnight Management's Builders FirstSource position peaked at $2.22M in Q1 2022.
765 funds tracked by Wall St. Rank held Builders FirstSource as of Q4 2025.

Based on CastleKnight Management's 13F filing for Q4 2025, filed 17 Feb 2026.