IMC Chicago’s Builders FirstSource BLDR Stock Holding History

IMC Chicago’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 Q1	$9.59M	Sell	116,500 -26,200	-18%	-$2.8M	﹤0.01%	1304
2025 Q4	$14.7M	Sell	142,700 -28,400	-17%	-$3.19M	0.01%	991
2025 Q3	$20.7M	Buy	171,100 +34,600	+25%	+$4.59M	0.01%	778
2025 Q2	$15.9M	Buy	136,500 +37,300	+38%	+$4.3M	0.01%	795
2025 Q1	$12.4M	Buy	99,200 +11,200	+13%	+$1.63M	0.01%	797
2024 Q4	$12.6M	Sell	88,000 -27,500	-24%	-$4.87M	0.01%	803
2024 Q3	$22.4M	Buy	115,500 +6,000	+5%	+$995K	0.01%	518
2024 Q2	$15.2M	Buy	109,500 +32,000	+41%	+$5.43M	0.01%	626
2024 Q1	$16.2M	Sell	77,500 -31,100	-29%	-$5.75M	0.01%	535
2023 Q4	$18.1M	Buy	+108,600	New	+$14.4M	0.01%	487

Other funds holding BLDR

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 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

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

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

IMC Chicago's BLDR Position: Q1 2026 in Review

IMC Chicago reduced its Builders FirstSource (BLDR) stake by 76% in Q1 2026, selling an estimated $2.56M and leaving 7,721 shares worth $636K. The position accounts for ﹤0.01% of the portfolio, ranked #3765.

IMC Chicago first reported a position in BLDR in Q1 2025 and has held it in 4 quarters since. The position peaked at $3.4M in Q3 2025. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

IMC Chicago held 7,721 shares of Builders FirstSource worth $636K as of Q1 2026.
IMC Chicago sold 23,967 Builders FirstSource shares in Q1 2026, an estimated $2.56M.
Builders FirstSource made up ﹤0.01% of IMC Chicago's portfolio in Q1 2026, its #3765 holding.
IMC Chicago first reported a position in Builders FirstSource in Q1 2025 and has held it in 4 quarters since.
IMC Chicago's Builders FirstSource position peaked at $3.4M in Q3 2025.
719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on IMC Chicago's 13F filing for Q1 2026, filed 5 May 2026.