Robotti Robert’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
$43.1M Buy
523,597
+96,606
+23% +$10.3M 6.72% 2
2025
Q4
$43.9M Buy
426,991
+13,012
+3% +$1.46M 7.89% 2
2025
Q3
$50.2M Sell
413,979
-1,824
-0.4% -$242K 8.71% 2
2025
Q2
$48.5M Buy
415,803
+2,051
+0.5% +$237K 8.15% 3
2025
Q1
$51.7M Buy
413,752
+19,578
+5% +$2.85M 10.36% 2
2024
Q4
$56.3M Sell
394,174
-3,398
-0.9% -$601K 9.89% 2
2024
Q3
$77.1M Sell
397,572
-3,672
-0.9% -$609K 11.73% 2
2024
Q2
$55.5M Sell
401,244
-938
-0.2% -$159K 8.7% 2
2024
Q1
$83.9M Sell
402,182
-117,813
-23% -$21.8M 11.38% 2
2023
Q4
$86.8M Sell
519,995
-149,761
-22% -$19.9M 12.5% 2
2023
Q3
$83.4M Sell
669,756
-103,254
-13% -$14.2M 12.25% 2
2023
Q2
$105M Sell
773,010
-592,612
-43% -$65.9M 16.97% 2
2023
Q1
$121M Sell
1,365,622
-232,719
-15% -$18.4M 21.35% 2
2022
Q4
$104M Sell
1,598,341
-128,660
-7% -$8.04M 20.67% 2
2022
Q3
$102M Sell
1,727,001
-58,753
-3% -$3.67M 24.18% 1
2022
Q2
$95.9M Sell
1,785,754
-8,270
-0.5% -$507K 23.46% 1
2022
Q1
$116M Sell
1,794,024
-59,340
-3% -$4.31M 23.43% 1
2021
Q4
$159M Sell
1,853,364
-398,363
-18% -$27M 32.19% 1
2021
Q3
$117M Sell
2,251,727
-36,164
-2% -$1.77M 26.73% 1
2021
Q2
$97.6M Sell
2,287,891
-177,256
-7% -$8.22M 24.5% 1
2021
Q1
$114M Buy
2,465,147
+1,142,555
+86% +$48.6M 28.84% 1
2020
Q4
$54M Sell
1,322,592
-5,342
-0.4% -$189K 15.75% 1
2020
Q3
$43.3M Sell
1,327,934
-239,648
-15% -$6.51M 16.71% 1
2020
Q2
$32.4M Sell
1,567,582
-35,937
-2% -$649K 13.97% 1
2020
Q1
$19.6M Sell
1,603,519
-11,874
-0.7% -$268K 11.51% 2
2019
Q4
$41M Sell
1,615,393
-160,491
-9% -$3.84M 13.09% 1
2019
Q3
$36.5M Sell
1,775,884
-103,640
-6% -$1.93M 11.14% 2
2019
Q2
$31.7M Sell
1,879,524
-149,439
-7% -$2.24M 11.04% 2
2019
Q1
$27.1M Sell
2,028,963
-28,580
-1% -$376K 9.55% 2
2018
Q4
$22.4M Sell
2,057,543
-17,662
-0.9% -$222K 8.78% 2
2018
Q3
$30.5M Buy
2,075,205
+8,605
+0.4% +$146K 8.02% 2
2018
Q2
$37.8M Sell
2,066,600
-15,114
-0.7% -$289K 9.85% 2
2018
Q1
$41.3M Sell
2,081,714
-65,219
-3% -$1.38M 11.43% 2
2017
Q4
$46.8M Sell
2,146,933
-14,525
-0.7% -$275K 12.2% 2
2017
Q3
$38.9M Sell
2,161,458
-11,444
-0.5% -$185K 10.67% 2
2017
Q2
$33.1M Sell
2,172,902
-2,158
-0.1% -$32.2K 9.97% 2
2017
Q1
$32.4M Buy
2,175,060
+2,158
+0.1% +$27.9K 9.57% 2
2016
Q4
$23.8M Buy
2,172,902
+4,445
+0.2% +$48.2K 7.26% 2
2016
Q3
$25M Buy
2,168,457
+21,481
+1% +$270K 8.56% 2
2016
Q2
$24.2M Buy
2,146,976
+294,982
+16% +$3.41M 8.7% 2
2016
Q1
$20.9M Buy
1,851,994
+243,462
+15% +$2.11M 7.59% 3
2015
Q4
$17.8M Buy
1,608,532
+8,111
+0.5% +$103K 7.3% 2
2015
Q3
$20.3M Sell
1,600,421
-814,610
-34% -$11.6M 13.5% 1
2015
Q2
$31M Sell
2,415,031
-404,143
-14% -$4.93M 17.19% 1
2015
Q1
$18.8M Sell
2,819,174
-17,056
-0.6% -$107K 10.84% 1
2014
Q4
$19.5M Buy
2,836,230
+61,732
+2% +$369K 10.92% 1
2014
Q3
$15.1M Sell
2,774,498
-281,447
-9% -$1.83M 7.48% 3
2014
Q2
$22.9M Sell
3,055,945
-189,759
-6% -$1.48M 8.95% 2
2014
Q1
$29.5M Sell
3,245,704
-462,368
-12% -$3.75M 11.27% 2
2013
Q4
$26.4M Sell
3,708,072
-514,981
-12% -$3.49M 10.63% 1
2013
Q3
$24.8M Buy
4,223,053
+1,281,426
+44% +$7.65M 9.99% 1
2013
Q2
$17.6M Buy
+2,941,627
New +$18.4M 7.66% 3

Other funds holding BLDR

Robotti Robert's BLDR Position: Q1 2026 in Review

Robotti Robert increased its Builders FirstSource (BLDR) stake by 23% in Q1 2026, buying an estimated $10.3M and bringing the position to 523,597 shares worth $43.1M. The position accounts for 6.72% of the portfolio, ranked #2.

Robotti Robert first reported a position in BLDR in Q2 2013 and has held it in 52 quarters since. The position peaked at $159M in Q4 2021. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

  • Robotti Robert held 523,597 shares of Builders FirstSource worth $43.1M as of Q1 2026.
  • Robotti Robert bought 96,606 Builders FirstSource shares in Q1 2026, an estimated $10.3M.
  • Builders FirstSource made up 6.72% of Robotti Robert's portfolio in Q1 2026, its #2 holding.
  • Robotti Robert first reported a position in Builders FirstSource in Q2 2013 and has held it in 52 quarters since.
  • Robotti Robert's Builders FirstSource position peaked at $159M in Q4 2021.
  • 719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Robotti Robert's 13F filing for Q1 2026, filed 13 May 2026.