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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
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

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
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
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Rossby Financial's BLDR Position: Q1 2026 in Review

Rossby Financial reduced its Builders FirstSource (BLDR) stake by 79% in Q1 2026, selling an estimated $167K and leaving 421 shares worth $34.1K. The position accounts for 0.01% of the portfolio, ranked #855.

Rossby Financial first reported a position in BLDR in Q1 2025 and has held it in 5 quarters since. The position peaked at $261K in Q3 2025. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

  • Rossby Financial held 421 shares of Builders FirstSource worth $34.1K as of Q1 2026.
  • Rossby Financial sold 1,568 Builders FirstSource shares in Q1 2026, an estimated $167K.
  • Builders FirstSource made up 0.01% of Rossby Financial's portfolio in Q1 2026, its #855 holding.
  • Rossby Financial first reported a position in Builders FirstSource in Q1 2025 and has held it in 5 quarters since.
  • Rossby Financial's Builders FirstSource position peaked at $261K in Q3 2025.
  • 719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Rossby Financial's 13F filing for Q1 2026, filed 11 May 2026.