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 		$6.59M Buy
80,000
+28,700
+56% +$3.06M ﹤0.01% 3110
2025
Q4 		$5.28M Sell
51,300
-146,700
-74% -$16.5M ﹤0.01% 3142
2025
Q3 		$24M Buy
198,000
+113,200
+133% +$15M ﹤0.01% 1473
2025
Q2 		$9.9M Sell
84,800
-97,100
-53% -$11.2M ﹤0.01% 2169
2025
Q1 		$22.7M Buy
181,900
+157,300
+639% +$22.9M 0.01% 1193
2024
Q4 		$3.52M Sell
24,600
-22,400
-48% -$3.96M ﹤0.01% 3175
2024
Q3 		$9.11M Buy
47,000
+200
+0.4% +$33.2K ﹤0.01% 2005
2024
Q2 		$6.48M Buy
46,800
+13,700
+41% +$2.33M ﹤0.01% 2604
2024
Q1 		$6.9M Sell
33,100
-157,400
-83% -$29.1M ﹤0.01% 2212
2023
Q4 		$31.8M Sell
190,500
-43,800
-19% -$5.82M 0.01% 932
2023
Q3 		$29.2M Buy
234,300
+16,300
+7% +$2.25M 0.01% 826
2023
Q2 		$29.6M Buy
218,000
+129,300
+146% +$14.4M 0.01% 896
2023
Q1 		$7.87M Buy
88,700
+65,900
+289% +$5.22M ﹤0.01% 1884
2022
Q4 		$1.48M Sell
22,800
-85,600
-79% -$5.35M ﹤0.01% 4339
2022
Q3 		$6.39M Sell
108,400
-65,700
-38% -$4.11M ﹤0.01% 2251
2022
Q2 		$9.35M Sell
174,100
-28,800
-14% -$1.77M ﹤0.01% 1829
2022
Q1 		$13.1M Buy
202,900
+145,000
+250% +$10.5M ﹤0.01% 1659
2021
Q4 		$4.96M Sell
57,900
-172,900
-75% -$11.7M ﹤0.01% 2862
2021
Q3 		$11.9M Buy
230,800
+41,000
+22% +$2M ﹤0.01% 1573
2021
Q2 		$8.1M Sell
189,800
-67,500
-26% -$3.13M ﹤0.01% 1971
2021
Q1 		$11.9M Buy
257,300
+248,600
+2,857% +$10.6M 0.01% 1391
2020
Q4 		$355K Buy
8,700
+700
+9% +$24.8K ﹤0.01% 6186
2020
Q3 		$261K Buy
+8,000
New +$217K ﹤0.01% 6078
2017
Q3 		– Sell
-20,000
Closed -$306K – 4449
2017
Q2 		$306K Hold
20,000
– – ﹤0.01% 3576
2017
Q1 		$298K Buy
+20,000
New +$259K ﹤0.01% 3451

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. 721 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.
  • 721 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.