Jane Street
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Jane Street’s Builders FirstSource BLDR Stock Holding History

Jane Street’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 		$25.9M Buy
314,100
+218,900
+230% +$23.4M ﹤0.01% 1558
2025
Q4 		$9.8M Sell
95,200
-7,400
-7% -$832K ﹤0.01% 2345
2025
Q3 		$12.4M Sell
102,600
-15,300
-13% -$2.03M ﹤0.01% 2143
2025
Q2 		$13.8M Sell
117,900
-30,000
-20% -$3.46M ﹤0.01% 1804
2025
Q1 		$18.5M Buy
147,900
+86,500
+141% +$12.6M ﹤0.01% 1377
2024
Q4 		$8.78M Sell
61,400
-23,500
-28% -$4.16M ﹤0.01% 2015
2024
Q3 		$16.5M Buy
84,900
+6,200
+8% +$1.03M ﹤0.01% 1403
2024
Q2 		$10.9M Buy
78,700
+7,000
+10% +$1.19M ﹤0.01% 1949
2024
Q1 		$15M Sell
71,700
-64,300
-47% -$11.9M ﹤0.01% 1433
2023
Q4 		$22.7M Sell
136,000
-48,400
-26% -$6.43M 0.01% 1167
2023
Q3 		$23M Buy
184,400
+76,700
+71% +$10.6M 0.01% 1000
2023
Q2 		$14.6M Buy
107,700
+60,000
+126% +$6.67M ﹤0.01% 1510
2023
Q1 		$4.23M Sell
47,700
-48,700
-51% -$3.86M ﹤0.01% 2680
2022
Q4 		$6.25M Sell
96,400
-49,800
-34% -$3.11M ﹤0.01% 2187
2022
Q3 		$8.61M Buy
146,200
+36,600
+33% +$2.29M ﹤0.01% 1851
2022
Q2 		$5.89M Sell
109,600
-37,900
-26% -$2.32M ﹤0.01% 2429
2022
Q1 		$9.52M Sell
147,500
-130,400
-47% -$9.47M ﹤0.01% 2058
2021
Q4 		$23.8M Sell
277,900
-183,600
-40% -$12.4M 0.01% 1062
2021
Q3 		$23.9M Buy
461,500
+234,600
+103% +$11.5M 0.01% 1018
2021
Q2 		$9.68M Buy
226,900
+24,200
+12% +$1.12M ﹤0.01% 1752
2021
Q1 		$9.4M Buy
202,700
+153,200
+309% +$6.52M ﹤0.01% 1610
2020
Q4 		$2.02M Sell
49,500
-11,300
-19% -$400K ﹤0.01% 3466
2020
Q3 		$1.98M Buy
60,800
+47,300
+350% +$1.28M ﹤0.01% 3051
2020
Q2 		$279K Buy
+13,500
New +$244K ﹤0.01% 5939
2017
Q3 		– Sell
-20,000
Closed -$306K – 4448
2017
Q2 		$306K Hold
20,000
– – ﹤0.01% 3575
2017
Q1 		$298K Buy
+20,000
New +$259K ﹤0.01% 3450

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

Jane Street's BLDR Position: Q1 2026 in Review

Jane Street sold out of Builders FirstSource (BLDR) in Q1 2026, closing a stake of 205,565 shares — an estimated $22M sold.

Jane Street first reported a position in BLDR in Q3 2015 and held it in 25 quarters. The position peaked at $98.3M in Q4 2023. 720 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

  • Jane Street reported no remaining Builders FirstSource position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 205,565 Builders FirstSource shares in Q1 2026, an estimated $22M.
  • Jane Street first reported a position in Builders FirstSource in Q3 2015 and held it in 25 quarters.
  • Jane Street's Builders FirstSource position peaked at $98.3M in Q4 2023.
  • 720 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.