Rossby Financial’s Builders FirstSource BLDR Stock Holding History

Rossby Financial’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 Q3	$28.3K	Buy	496 +113	+30%	+$7.76K	﹤0.01%	1134
2026 Q2	$34.3K	Sell	383 -38	-9%	-$3.04K	0.01%	805
2026 Q1	$34.1K	Sell	421 -1,568	-79%	-$167K	0.01%	855
2025 Q4	$205K	Sell	1,989 -71	-3%	-$7.98K	0.06%	273
2025 Q3	$261K	Buy	2,060 +248	+14%	+$32.9K	0.09%	232
2025 Q2	$211K	Buy	1,812 +30	+2%	+$3.46K	0.08%	244
2025 Q1	$216K	Buy	+1,782	New	+$259K	0.09%	213

Other funds holding BLDR

Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Capital International Investors Los Angeles, California $483B AUM 27.72% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Jane Street New York $1.19T AUM 51.51% 1-Year Est. Return

Focus Partners Wealth Boston, Massachusetts $96.6B AUM 22.52% 1-Year Est. Return

Diamond Hill Capital Management Columbus, Ohio $9.18B AUM 10.37% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $296B AUM 23.14% 1-Year Est. Return

Capital World Investors Los Angeles, California $824B AUM 37.44% 1-Year Est. Return

Rossby Financial's BLDR Position: Q3 2026 in Review

Rossby Financial increased its Builders FirstSource (BLDR) stake by 30% in Q3 2026, buying an estimated $7.76K and bringing the position to 496 shares worth $28.3K. The position accounts for ﹤0.01% of the portfolio, ranked #1134.

Rossby Financial first reported a position in BLDR in Q1 2025 and has held it in 7 quarters since. The position peaked at $261K in Q3 2025. 387 funds tracked by Wall St. Rank hold BLDR as of Q3 2026.

Rossby Financial held 496 shares of Builders FirstSource worth $28.3K as of Q3 2026.
Rossby Financial bought 113 Builders FirstSource shares in Q3 2026, an estimated $7.76K.
Builders FirstSource made up ﹤0.01% of Rossby Financial's portfolio in Q3 2026, its #1134 holding.
Rossby Financial first reported a position in Builders FirstSource in Q1 2025 and has held it in 7 quarters since.
Rossby Financial's Builders FirstSource position peaked at $261K in Q3 2025.
387 funds tracked by Wall St. Rank held Builders FirstSource as of Q3 2026.

Based on Rossby Financial's 13F filing for Q3 2026, filed 5 Nov 2026.