Builders FirstSource, Inc.
DE ˙ DB ˙ US12008R1077
64,22 € ↓ -0,04 (-0,06%)
2026-06-03
DEL PRIS
SecurityDE:B1F / Builders FirstSource, Inc.
InstitutionAviva Plc
Latest Disclosed Ownership81,345 shares
Latest Disclosed Value $ 6,697,134
Aviva Plc reports 2.25% decrease in ownership of B1F / Builders FirstSource, Inc.

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 81,345 shares of Builders FirstSource, Inc. (DE:B1F) valued at $5,617,686 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 83,217 shares of Builders FirstSource, Inc.. This represents a change in shares of -2.25% during the quarter. The current value of the position is $5,223,976 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)
2026-05-14 2026-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 81,345 -1,872 -2.25 6,697 -21.78 0.0112
2026-02-12 2025-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 83,217 5,742 7.41 8,562 -8.85 0.0144
2025-11-13 2025-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 77,475 4,533 6.21 9,394 10.36 0.0171
2025-08-07 2025-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 72,942 68,476 1,533.27 8,512 1,428.01 0.0176
2025-05-15 2025-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 4,466 -175 -3.77 558 -15.99 0.0013
2025-02-13 2024-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 4,641 -14 -0.30 663 -26.50 0.0017
2024-11-14 2024-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 4,655 -2,723 -36.91 902 -11.66 0.0023
2024-08-02 2024-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 7,378 -9,003 -54.96 1,021 -70.11 0.0028
2024-05-14 2024-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 16,381 -4,135 -20.16 3,416 -0.23 0.0112
2024-02-09 2023-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 20,516 3,764 22.47 3,425 64.22 0.0123
2023-11-13 2023-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 16,752 3,606 27.43 2,085 16.68 0.0088
2023-08-10 2023-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 13,146 -7,479 -36.26 1,788 -2.40 0.0073
2023-05-12 2023-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 20,625 -29,637 -58.97 1,831 -43.83 0.0083
2023-02-14 2022-12-31 13F/A-2 BUILDERS FIRSTSOURCE COM 12008R107 50,262 22,245 79.40 3,261 97.46 0.0160
2023-02-10 2022-12-31 13F/A-1 BUILDERS FIRSTSOURCE COM 12008R107 50,262 22,245 18,997 0.0906
2023-02-09 2022-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 50,262 22,245 3 0.0157
2022-11-14 2022-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 28,017 -22,232 -44.24 1,651 -38.81 0.0095
2022-08-04 2022-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 50,249 50,249 2,698 0.0144
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.