Ostrum Asset Management’s Builders FirstSource BLDR Stock Holding History

Ostrum Asset 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 Q1	$210K	Buy	2,545 +1,953	+330%	+$209K	0.01%	514
2025 Q4	$60.9K	Sell	592 -2,782	-82%	-$313K	﹤0.01%	554
2025 Q3	$409K	Buy	3,374 +2,560	+314%	+$340K	0.02%	431
2025 Q2	$95K	Sell	814 -24	-3%	-$2.77K	﹤0.01%	545
2025 Q1	$105K	Sell	838 -22	-3%	-$3.2K	0.01%	568
2024 Q4	$123K	Sell	860 -37	-4%	-$6.55K	0.01%	560
2024 Q3	$174K	Buy	897 +11	+1%	+$1.82K	0.01%	506
2024 Q2	$123K	Sell	886 -69	-7%	-$11.7K	0.01%	560
2024 Q1	$199K	Hold	955	–	–	0.02%	540
2023 Q4	$159K	Sell	955 -1,700	-64%	-$226K	0.01%	548
2023 Q3	$331K	Buy	2,655 +1,697	+177%	+$234K	0.03%	495
2023 Q2	$130K	Buy	+958	New	+$107K	0.01%	570

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

Ostrum Asset Management's BLDR Position: Q1 2026 in Review

Ostrum Asset Management increased its Builders FirstSource (BLDR) stake by 330% in Q1 2026, buying an estimated $209K and bringing the position to 2,545 shares worth $210K. The position accounts for 0.01% of the portfolio, ranked #514.

Ostrum Asset Management first reported a position in BLDR in Q2 2023 and has held it in 12 quarters since. The position peaked at $409K in Q3 2025. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

Ostrum Asset Management held 2,545 shares of Builders FirstSource worth $210K as of Q1 2026.
Ostrum Asset Management bought 1,953 Builders FirstSource shares in Q1 2026, an estimated $209K.
Builders FirstSource made up 0.01% of Ostrum Asset Management's portfolio in Q1 2026, its #514 holding.
Ostrum Asset Management first reported a position in Builders FirstSource in Q2 2023 and has held it in 12 quarters since.
Ostrum Asset Management's Builders FirstSource position peaked at $409K in Q3 2025.
719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Ostrum Asset Management's 13F filing for Q1 2026, filed 14 May 2026.