Walleye Trading’s Builders FirstSource BLDR Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$2.84M Sell
34,500
-9,000
-21% -$961K ﹤0.01% 1473
2025
Q4
$4.48M Buy
43,500
+16,600
+62% +$1.87M 0.01% 1356
2025
Q3
$3.26M Buy
26,900
+5,300
+25% +$703K 0.01% 1496
2025
Q2
$2.52M Buy
21,600
+6,000
+38% +$692K ﹤0.01% 1595
2025
Q1
$1.95M Sell
15,600
-8,300
-35% -$1.21M ﹤0.01% 1647
2024
Q4
$3.42M Buy
23,900
+15,100
+172% +$2.67M 0.01% 1386
2024
Q3
$1.71M Buy
8,800
+4,200
+91% +$696K ﹤0.01% 1776
2024
Q2
$637K Sell
4,600
-1,900
-29% -$323K ﹤0.01% 2362
2024
Q1
$1.36M Sell
6,500
-9,900
-60% -$1.83M ﹤0.01% 1999
2023
Q4
$2.74M Buy
16,400
+7,000
+74% +$930K 0.01% 1686
2023
Q3
$1.17M Sell
9,400
-40,600
-81% -$5.6M ﹤0.01% 2244
2023
Q2
$6.8M Sell
50,000
-19,000
-28% -$2.11M 0.02% 766
2023
Q1
$6.13M Buy
69,000
+22,800
+49% +$1.81M 0.01% 901
2022
Q4
$3M Buy
46,200
+39,100
+551% +$2.44M 0.01% 1407
2022
Q3
$418K Sell
7,100
-8,100
-53% -$506K ﹤0.01% 3057
2022
Q2
$816K Sell
15,200
-13,000
-46% -$797K ﹤0.01% 2427
2022
Q1
$1.82M Buy
28,200
+11,700
+71% +$849K 0.01% 1732
2021
Q4
$1.41M Sell
16,500
-6,600
-29% -$447K ﹤0.01% 1929
2021
Q3
$1.2M Buy
23,100
+23,000
+23,000% +$1.12M ﹤0.01% 2028
2021
Q2
$4K Sell
100
-10,900
-99% -$505K ﹤0.01% 5021
2021
Q1
$510K Sell
11,000
-26,400
-71% -$1.12M ﹤0.01% 2634
2020
Q4
$1.53M Sell
37,400
-54,000
-59% -$1.91M 0.01% 1622
2020
Q3
$2.98M Buy
91,400
+72,500
+384% +$1.97M 0.02% 873
2020
Q2
$391K Sell
18,900
-56,300
-75% -$1.02M ﹤0.01% 2484
2020
Q1
$920K Buy
75,200
+54,800
+269% +$1.24M 0.01% 1364
2019
Q4
$518K Buy
20,400
+10,500
+106% +$251K ﹤0.01% 2388
2019
Q3
$204K Buy
9,900
+8,600
+662% +$160K ﹤0.01% 2901
2019
Q2
$22K Buy
1,300
+300
+30% +$4.49K ﹤0.01% 3725
2019
Q1
$13K Sell
1,000
-59,800
-98% -$786K ﹤0.01% 3957
2018
Q4
$663K Buy
60,800
+1,400
+2% +$17.6K ﹤0.01% 2190
2018
Q3
$872K Buy
59,400
+52,300
+737% +$886K ﹤0.01% 2234
2018
Q2
$130K Buy
7,100
+5,100
+255% +$97.5K ﹤0.01% 3915
2018
Q1
$40K Sell
2,000
-18,100
-90% -$383K ﹤0.01% 4200
2017
Q4
$438 Sell
20,100
-11,700
-37% -$222K ﹤0.01% 2725
2017
Q3
$572 Buy
31,800
+21,900
+221% +$353K ﹤0.01% 2343
2017
Q2
$152 Sell
9,900
-127,600
-93% -$1.91M ﹤0.01% 3300
2017
Q1
$2.05K Buy
+137,500
New +$1.78M 0.01% 1077

Other funds holding BLDR

Walleye Trading's BLDR Position: Q1 2026 in Review

Walleye Trading reduced its Builders FirstSource (BLDR) stake by 33% in Q1 2026, selling an estimated $396K and leaving 7,537 shares worth $621K. The position accounts for ﹤0.01% of the portfolio, ranked #2451.

Walleye Trading first reported a position in BLDR in Q3 2015 and has held it in 32 quarters since. The position peaked at $20M in Q4 2023. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

  • Walleye Trading held 7,537 shares of Builders FirstSource worth $621K as of Q1 2026.
  • Walleye Trading sold 3,706 Builders FirstSource shares in Q1 2026, an estimated $396K.
  • Builders FirstSource made up ﹤0.01% of Walleye Trading's portfolio in Q1 2026, its #2451 holding.
  • Walleye Trading first reported a position in Builders FirstSource in Q3 2015 and has held it in 32 quarters since.
  • Walleye Trading's Builders FirstSource position peaked at $20M in Q4 2023.
  • 719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Walleye Trading's 13F filing for Q1 2026, filed 11 May 2026.