Builders FirstSource, Inc.
DE ˙ DB ˙ US12008R1077
64,26 € ↓ -1,00 (-1,53%)
2026-06-02
AKTIENPREIS
SecurityDE:B1F / Builders FirstSource, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership2,940 shares
Latest Disclosed Value $ 242,050
Squarepoint Ops LLC ownership in B1F / Builders FirstSource, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 2,940 shares of Builders FirstSource, Inc. (DE:B1F) valued at $203,036 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 20,973 shares of Builders FirstSource, Inc.. This represents a change in shares of -85.98% during the quarter. The current value of the position is $188,924 USD.

Squarepoint Ops LLC has a history of taking positions in derivatives of the underlying security (B1F) in the form of stock options. The firm currently holds call options representing 128,000 of underlying shares valued at $10,538,240 USD and put options representing 32,300 of underlying shares valued at $2,659,259 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:B1F / Builders FirstSource, Inc. Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 2,940 -18,033 -85.98 242 -88.78 0.0003
2026-02-13 2025-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 20,973 18,024 611.19 2,158 504.20 0.0023
2025-11-14 2025-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 2,949 -47,002 -94.10 358 -93.87 0.0004
2025-08-27 2025-06-30 13F/A-1 BUILDERS FIRSTSOURCE COM 12008R107 49,951 45,406 999.03 5,829 927.87 0.0061
2025-08-14 2025-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 49,951 45,406 5,829 0.0061
2025-08-27 2025-03-31 13F/A-1 BUILDERS FIRSTSOURCE COM 12008R107 4,545 -102 -2.19 568 -14.61 0.0007
2025-05-15 2025-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 4,545 -102 568 0.0007
2025-02-14 2024-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 4,647 1,511 48.18 664 9.39 0.0007
2024-11-14 2024-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 3,136 -19,034 -85.85 608 -80.22 0.0010
2024-08-14 2024-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 22,170 18,825 562.78 3,069 340.17 0.0051
2024-05-15 2024-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 3,345 1 0.03 698 24.91 0.0012
2024-02-14 2023-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 3,344 -128,416 -97.46 558 -96.60 0.0011
2023-11-14 2023-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 131,760 118,019 858.88 16,403 778.05 0.0405
2023-08-14 2023-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 13,741 13,741 1,869 0.0057
2023-05-15 2023-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -6,261 -100.00 0 -100.00
2023-02-14 2022-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 6,261 -77,207 -92.50 406 -91.74 0.0016
2022-11-14 2022-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 83,468 -11,368 -11.99 4,918 -3.44 0.0248
2022-08-15 2022-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 94,836 -65,830 -40.97 5,093 -50.88 0.0283
2022-05-16 2022-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 160,666 160,666 10,369 0.0444
2021-11-15 2021-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -173,742 -100.00 0 -100.00
2021-08-16 2021-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 173,742 173,742 7,412 0.0282
2021-02-16 2020-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -122,800 -100.00 0 -100.00
2020-11-16 2020-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 122,800 11,807 10.64 4,006 74.33 0.0540
2020-08-14 2020-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 110,993 110,993 -9.61 2,298 -42.64 0.0372
2020-02-14 2019-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -32,068 -100.00 0 -100.00
2019-11-14 2019-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 32,068 859 2.75 660 25.48 0.0059
2019-08-14 2019-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 31,209 -69,257 -68.94 526 -60.75 0.0051
2019-05-15 2019-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 100,466 45,617 83.17 1,340 124.08 0.0142
2019-02-14 2018-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 54,849 -158,200 -74.26 598 -80.88 0.0070
2018-11-14 2018-09-30 13F BUILDERS FIRSTSOURCE COM 12008R107 213,049 119,471 127.67 3,128 82.71 0.0374
2018-08-14 2018-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 93,578 60,178 180.17 1,712 158.22 0.0227
2018-05-15 2018-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 33,400 33,400 -64.31 663 -61.27 0.0105
2017-08-14 2017-06-30 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -14,636 -100.00 0 -100.00
2017-05-15 2017-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 14,636 -11,535 -44.08 218 -24.04 0.0060
2017-02-14 2016-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 26,171 26,171 78.81 287 31.65 0.0117
2016-05-16 2016-03-31 13F BUILDERS FIRSTSOURCE COM 12008R107 0 -21,400 -100.00 0 -100.00
2016-02-16 2015-12-31 13F BUILDERS FIRSTSOURCE COM 12008R107 21,400 21,400 237 0.0260
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F BUILDERS FIRSTSOURCE COM Call 128,000 129.80 10,538 83.91 n/a n/a n/a
2026-02-13 2025-12-31 13F BUILDERS FIRSTSOURCE COM Call 55,700 -4.30 5,731 -18.79 n/a n/a n/a
2025-11-14 2025-09-30 13F BUILDERS FIRSTSOURCE COM Call 58,200 -66.18 7,057 -64.86 n/a n/a n/a
2025-08-27 2025-06-30 13F/A BUILDERS FIRSTSOURCE COM Call 172,100 114.59 20,082 100.42 n/a n/a n/a
2025-08-14 2025-06-30 13F BUILDERS FIRSTSOURCE COM Call 172,100 20,082 n/a n/a n/a
2025-08-27 2025-03-31 13F/A BUILDERS FIRSTSOURCE COM Call 80,200 326.60 10,020 272.91 n/a n/a n/a
2025-05-15 2025-03-31 13F BUILDERS FIRSTSOURCE COM Call 80,200 10,020 n/a n/a n/a
2025-02-14 2024-12-31 13F BUILDERS FIRSTSOURCE COM Call 18,800 150.67 2,687 84.93 n/a n/a n/a
2024-11-14 2024-09-30 13F BUILDERS FIRSTSOURCE COM Call 7,500 -76.11 1,454 -66.57 n/a n/a n/a
2024-08-14 2024-06-30 13F BUILDERS FIRSTSOURCE COM Call 31,400 -26.12 4,346 -50.96 n/a n/a n/a
2024-05-15 2024-03-31 13F BUILDERS FIRSTSOURCE COM Call 42,500 -49.10 8,863 -36.42 n/a n/a n/a
2024-02-14 2023-12-31 13F BUILDERS FIRSTSOURCE COM Call 83,500 -19.71 13,939 7.67 n/a n/a n/a
2023-11-14 2023-09-30 13F BUILDERS FIRSTSOURCE COM Call 104,000 -7.80 12,947 -15.61 n/a n/a n/a
2023-08-14 2023-06-30 13F BUILDERS FIRSTSOURCE COM Call 112,800 3.30 15,341 58.24 n/a n/a n/a
2023-05-15 2023-03-31 13F BUILDERS FIRSTSOURCE COM Call 109,200 28.02 9,695 75.17 n/a n/a n/a
2023-02-14 2022-12-31 13F BUILDERS FIRSTSOURCE COM Call 85,300 316.10 5,534 358.11 n/a n/a n/a
2022-11-14 2022-09-30 13F BUILDERS FIRSTSOURCE COM Call 20,500 1,208 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F BUILDERS FIRSTSOURCE COM Put 32,300 -11.26 2,659 -29.00 n/a n/a n/a
2026-02-13 2025-12-31 13F BUILDERS FIRSTSOURCE COM Put 36,400 2.54 3,745 -12.99 n/a n/a n/a
2025-11-14 2025-09-30 13F BUILDERS FIRSTSOURCE COM Put 35,500 -65.33 4,304 -63.98 n/a n/a n/a
2025-08-27 2025-06-30 13F/A BUILDERS FIRSTSOURCE COM Put 102,400 73.85 11,949 62.39 n/a n/a n/a
2025-08-14 2025-06-30 13F BUILDERS FIRSTSOURCE COM Put 102,400 11,949 n/a n/a n/a
2025-08-27 2025-03-31 13F/A BUILDERS FIRSTSOURCE COM Put 58,900 394.96 7,359 332.82 n/a n/a n/a
2025-05-15 2025-03-31 13F BUILDERS FIRSTSOURCE COM Put 58,900 7,359 n/a n/a n/a
2025-02-14 2024-12-31 13F BUILDERS FIRSTSOURCE COM Put 11,900 -63.04 1,701 -72.77 n/a n/a n/a
2024-11-14 2024-09-30 13F BUILDERS FIRSTSOURCE COM Put 32,200 -32.21 6,242 -5.05 n/a n/a n/a
2024-08-14 2024-06-30 13F BUILDERS FIRSTSOURCE COM Put 47,500 43.50 6,574 -4.77 n/a n/a n/a
2024-05-15 2024-03-31 13F BUILDERS FIRSTSOURCE COM Put 33,100 -89.86 6,903 -87.34 n/a n/a n/a
2024-02-14 2023-12-31 13F BUILDERS FIRSTSOURCE COM Put 326,500 -11.83 54,506 18.24 n/a n/a n/a
2023-11-14 2023-09-30 13F BUILDERS FIRSTSOURCE COM Put 370,300 26.08 46,099 15.41 n/a n/a n/a
2023-08-14 2023-06-30 13F BUILDERS FIRSTSOURCE COM Put 293,700 -22.26 39,943 19.09 n/a n/a n/a
2023-05-15 2023-03-31 13F BUILDERS FIRSTSOURCE COM Put 377,800 9.00 33,541 49.16 n/a n/a n/a
2023-02-14 2022-12-31 13F BUILDERS FIRSTSOURCE COM Put 346,600 507.01 22,487 568.46 n/a n/a n/a
2022-11-14 2022-09-30 13F BUILDERS FIRSTSOURCE COM Put 57,100 3,364 n/a n/a n/a
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.