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
2026 Q2	$6.51M	Buy	+72,800	New	+$5.81M	0.09%	164
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

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

CastleKnight Management's BLDR Position: Q2 2026 in Review

CastleKnight Management opened a new position in Builders FirstSource (BLDR) in Q2 2026: 72,800 shares worth $6.51M. The stake represents 0.09% of the portfolio and ranks #164 among its holdings. This is a return to the name: CastleKnight Management previously reported a position in BLDR as recently as Q3 2025.

CastleKnight Management first reported a position in BLDR in Q1 2022 and has held it in 5 quarters since. 671 funds tracked by Wall St. Rank hold BLDR as of Q2 2026.

CastleKnight Management held 72,800 shares of Builders FirstSource worth $6.51M as of Q2 2026.
Builders FirstSource was a new CastleKnight Management position in Q2 2026.
Builders FirstSource made up 0.09% of CastleKnight Management's portfolio in Q2 2026, its #164 holding.
CastleKnight Management first reported a position in Builders FirstSource in Q1 2022 and has held it in 5 quarters since.
671 funds tracked by Wall St. Rank held Builders FirstSource as of Q2 2026.

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