Builders FirstSource, Inc.
US ˙ NYSE ˙ US12008R1077

SecurityBLDR / Builders FirstSource, Inc.
InstitutionIFP Advisors, Inc
Latest Disclosed Ownership1,986 shares
Latest Disclosed Value $ 163,507
IFP Advisors, Inc reports 9.93% decrease in ownership of BLDR / Builders FirstSource, Inc.

On April 13, 2026 - IFP Advisors, Inc filed a 13F-HR form disclosing ownership of 1,986 shares of Builders FirstSource, Inc. (US:BLDR) valued at $163,507 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 2,205 shares of Builders FirstSource, Inc.. This represents a change in shares of -9.93% during the quarter. The current value of the position is $147,480 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)
2026-04-13 2026-03-31 13F BUILDERS FIRSTSOURCE cs 12008R107 1,986 -219 -9.93 164 -27.88 0.0034
2026-02-06 2025-12-31 13F BUILDERS FIRSTSOURCE cs 12008R107 2,205 -370 -14.37 227 -27.56 0.0051
2026-02-06 2025-09-30 13F/A-1 BUILDERS FIRSTSOURCE cs 12008R107 2,575 -5 -0.19 312 -1.89 0.0081
2025-12-02 2025-09-30 13F BUILDERS FIRSTSOURCE cs 12008R107 1,966 -614 386 0.0100
2025-07-24 2025-06-30 13F BUILDERS FIRSTSOURCE cs 12008R107 2,580 460 21.70 318 20.45 0.0090
2025-05-05 2025-03-31 13F BUILDERS FIRSTSOURCE cs 12008R107 2,120 296 16.23 265 1.54 0.0082
2025-02-04 2024-12-31 13F BUILDERS FIRSTSOURCE cs 12008R107 1,824 -1,280 -41.24 261 -56.74 0.0085
2025-02-04 2024-09-30 13F BUILDERS FIRSTSOURCE cs 12008R107 3,104 -1,035 -25.01 602 5.07 0.0217
2024-07-30 2024-06-30 13F BUILDERS FIRSTSOURCE cs 12008R107 4,139 1,940 88.22 573 24.89 0.0227
2024-07-30 2024-03-31 13F BUILDERS FIRSTSOURCE cs 12008R107 2,199 366 19.97 459 49.67 0.0201
2024-01-09 2023-12-31 13F BUILDERS FIRSTSOURCE cs 12008R107 1,833 1,178 179.85 306 277.78 0.0144
2023-10-12 2023-09-30 13F BUILDERS FIRSTSOURCE cs 12008R107 655 375 133.93 82 113.16 0.0037
2023-08-14 2023-06-30 13F/A-1 BUILDERS FIRSTSOURCE cs 12008R107 280 -41 -12.77 38 533.33 0.0016
2023-08-04 2023-06-30 13F BUILDERS FIRSTSOURCE cs 12008R107 280 -41 5 0.0002
2023-04-18 2023-03-31 13F BUILDERS FIRSTSOURCE cs 12008R107 321 -196 -37.91 6 0.0003
2023-02-07 2022-12-31 13F BUILDERS FIRSTSOURCE cs 12008R107 517 -1,200 -69.89 0 -100.00 0.0009
2022-11-08 2022-09-30 13F BUILDERS FIRSTSOURCE cs 12008R107 1,717 123 7.72 76 5.56 0.0020
2022-09-06 2022-06-30 13F/A-1 BUILDERS FIRSTSOURCE cs 12008R107 1,594 0 0.00 72 0.00 0.0023
2022-09-06 2022-03-31 13F/A-1 BUILDERS FIRSTSOURCE cs 12008R107 1,594 1,432 883.95 72 414.29 0.0023
2022-08-08 2022-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 1,526 1,364 31 0.0006
2022-01-12 2021-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 162 62 62.00 14 180.00 0.0003
2021-10-06 2021-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 100 0 0.00 5 25.00 0.0001
2021-07-13 2021-06-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 100 -654 -86.74 4 -88.57 0.0001
2021-04-30 2021-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 754 -4,417 -85.42 35 -83.41 0.0007
2021-01-25 2020-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 5,171 -1,593 -23.55 211 -5.38 0.0086
2020-10-29 2020-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 6,764 -80 -1.17 223 59.29 0.0133
2020-08-05 2020-06-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 6,844 2,022 41.93 140 105.88 0.0111
2020-05-12 2020-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 4,822 4,222 703.67 68 353.33 0.0069
2020-01-17 2019-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 600 0 0.00 15 25.00 0.0011
2019-11-07 2019-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 600 0 0.00 12 50.00 0.0008
2019-05-15 2019-03-31 13F BUILDERS FIRSTSOURCE Stock 12008R107 600 -35 -5.51 8 14.29 0.0011
2019-06-03 2018-12-31 13F/A-10 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 635 0 0.00 7 -22.22 0.0004
2019-01-23 2018-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 635 0 7 0.0004
2019-06-03 2018-09-30 13F/A-9 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 635 -1,900 -74.95 9 -80.43 0.0004
2018-10-25 2018-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 635 -1,900 9 0.0004
2019-06-03 2018-06-30 13F/A-8 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 2,535 1,314 107.62 46 70.37 0.0019
2018-08-07 2018-06-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 2,535 68 46
2019-06-03 2018-03-31 13F/A-7 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 1,221 0 0.00 27 0.00 0.0012
2018-05-09 2018-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 2,467 1,246 49
2019-06-03 2017-12-31 13F/A-6 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 1,221 0 0.00 27 22.73 0.0012
2018-01-24 2017-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 1,221 0 27
2017-10-30 2017-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 1,221 1,200 5,714.29 22 0.0009
2019-06-03 2017-06-30 13F/A-5 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 0 0.00 0 0.0000
2017-07-31 2017-06-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 0 0
2019-06-03 2017-03-31 13F/A-4 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 0 0.00 0 0.0000
2017-04-26 2017-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 0 0
2019-06-03 2016-12-31 13F/A-3 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 -42 -66.67 0 -100.00
2017-02-14 2016-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 21 -42 0
2016-11-04 2016-09-30 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 63 63 0.00 1 0.0001
2019-06-03 2016-06-30 13F/A-2 BUILDERS FIRSTSOURCE INC COM Stock 12008R107 0 -600 -100.00 0 -100.00
2019-06-03 2016-03-31 13F/A-1 BUILDERS FIRSTSOURCE Stock 12008R107 600 542 934.48 8 700.00 0.0011
2016-05-02 2016-03-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 62 4 1
2016-02-11 2015-12-31 13F BUILDERS FIRSTSOURCE INC COM Stock 12008R107 58 58 1 0.0001
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.