Builders FirstSource, Inc.
US ˙ NYSE ˙ US12008R1077

SecurityBLDR / Builders FirstSource, Inc.
InstitutionTocqueville Asset Management L.p.
Latest Disclosed Ownership199,525 shares
Latest Disclosed Value $ 16,426,893
Tocqueville Asset Management L.p. reports 5.82% increase in ownership of BLDR / Builders FirstSource, Inc.

On May 12, 2026 - Tocqueville Asset Management L.p. filed a 13F-HR form disclosing ownership of 199,525 shares of Builders FirstSource, Inc. (US:BLDR) valued at $16,426,893 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 188,559 shares of Builders FirstSource, Inc.. This represents a change in shares of 5.82% during the quarter. The current value of the position is $14,693,021 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 199,525 10,966 5.82 16,427 -15.33 0.2436
2026-02-12 2025-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 188,559 -26,231 -12.21 19,401 -25.51 0.2830
2025-11-13 2025-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 214,790 -3,737 -1.71 26,043 2.13 0.3786
2025-08-12 2025-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 218,527 66,391 43.64 25,500 34.16 0.3882
2025-05-13 2025-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 152,136 29,206 23.76 19,008 8.18 0.3104
2025-02-10 2024-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 122,930 36,359 42.00 17,570 4.70 0.2756
2024-11-08 2024-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 86,571 49,391 132.84 16,783 226.12 0.2636
2024-08-12 2024-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 37,180 6,797 22.37 5,146 -18.78 0.0849
2024-05-09 2024-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 30,383 -1,039 -3.31 6,336 20.80 0.1035
2024-02-12 2023-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 31,422 -1,644 -4.97 5,246 27.43 0.0951
2023-11-09 2023-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 33,066 -11,666 -26.08 4,116 -32.34 0.0782
2023-08-11 2023-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 44,732 -364 -0.81 6,084 51.96 0.1089
2023-05-10 2023-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 45,096 -10,590 -19.02 4,004 10.83 0.0756
2023-02-09 2022-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 55,686 -10,579 -15.96 3,613 -7.48 0.0686
2022-11-10 2022-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 66,265 422 0.64 3,904 10.41 0.0796
2022-08-12 2022-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 65,843 643 0.99 3,536 -15.97 0.0647
2022-05-16 2022-03-31 13F Builders First Source COM 12008R107 65,200 0 0.00 4,208 -24.70 0.0636
2022-02-14 2021-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 65,200 0 0.00 5,588 65.67 0.0769
2021-11-15 2021-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 65,200 -10,900 -14.32 3,373 3.91 0.0500
2021-08-16 2021-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 76,100 -9,640 -11.24 3,246 -18.36 0.0469
2021-05-17 2021-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 85,740 3,515 4.27 3,976 18.47 0.0612
2021-02-16 2020-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 82,225 20,181 32.53 3,356 65.81 0.0560
2020-11-16 2020-09-30 13F BUILDERS FIRST SOURCE COM 12008R107 62,044 62,044 2,024 0.0387
2018-05-14 2018-03-31 13F Builders First Source COM 12008R107 0 -9,500 -100.00 0 -100.00
2018-02-13 2017-12-31 13F Builders First Source COM 12008R107 9,500 9,500 207 0.0024
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.