Stock ownership · SEC 13F · Q4 2025

BUILDERS FIRSTSOURCE INC

Who owns BUILDERS FIRSTSOURCE INC (CUSIP 12008R107)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$6.0M
Reported value
6
Institutions
100%
Top-5 share

The verdict

According to SEC Form 13F-HR filings in this corpus, BUILDERS FIRSTSOURCE INC ranks #532 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. 6 institutions report $6.0M as of Q4 2025, with ownership dominated by its top few institutional owners.

6
institutions hold it
$6.0M
reported 13F value
100%
held by top 5
#532
of 775 by value

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

According to SEC Form 13F-HR filings in this corpus, BUILDERS FIRSTSOURCE INC ranks #532 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP 12008R107 · Q4 2025 $6M reported

VALUE-LIGHT · HOLDERS-FOCUS · CONC-DOM · PHOTO-FINISH · ACTIVITY-QUIET · BOOK-FULL

  • VALUE-LIGHT #532/775
  • HOLDERS-FOCUS 6 filers
  • CONC-DOM 100% top-5
  • PHOTO-FINISH VANGUARD WHITEHALL FDS
  • ACTIVITY-QUIET 0 new
  • BOOK-FULL 8Q history

Photo-finish peer on reported value: VANGUARD WHITEHALL FDS

Read with: Ownership concentration guide - BUILDERS FIRSTSOURCE INC's top-five holders account for 100% of reported value — read concentration before treating any single filer as a signal.

Reported-value neighbourhood · BUILDERS FIRSTSOURCE INC

Nearest tracked securities by aggregate 13F reported value, not a full corpus reprint.

Unilever · near$6MBUILDERS FIRSTSOURCE · this …$6MVANGUARD WHITEHALL FDS · near$6MUBS GROUP AG · near$6MAMERICAN WTR WKS · near$6M
Aggregate reported institutional value ($)
Largest institutional holders of BUILDERS FIRSTSOURCE INC
  1. 1
    Banque Transatlantique SA $4.7M
  2. 2
    Pacer Advisors, Inc. $933K
  3. 3
    MARINER INVESTMENT GROUP LLC $238K
  4. 4
    Anchor Investment Management, LLC $39K
  5. 5
    Bell Investment Advisors, Inc $24K
  6. 6
    TD Capital Management LLC $5K

Top 6 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a BUILDERS FIRSTSOURCE INC position has fallen from 7 to 6 over the last 8 quarters of 13F filings.

246810 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 6
Distinct 13F filers holding BUILDERS FIRSTSOURCE INC, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Banque Transatlantique SA 44,922 $4.7M 79.3%
2 Pacer Advisors, Inc. 9,067 $933K 15.6%
3 MARINER INVESTMENT GROUP LLC 100,000 $238K 4.0%
4 Anchor Investment Management, LLC 375 $39K 0.6%
5 Bell Investment Advisors, Inc 237 $24K 0.4%
6 TD Capital Management LLC 46 $5K 0.1%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among BUILDERS FIRSTSOURCE INC's reported holders for Q4 2025, by reported value:

Shared-defined discretion (DFND)
83.2%
Sole discretion (SOLE)
16.8%

Frequently Asked Questions

How many institutions hold BUILDERS FIRSTSOURCE INC?▼
BUILDERS FIRSTSOURCE INC is held by 6 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
Where does BUILDERS FIRSTSOURCE INC sit among tracked securities?▼
According to SEC Form 13F-HR filings in this corpus, BUILDERS FIRSTSOURCE INC ranks #532 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. The ordinal is recomputed live among securities with ≥5 reporting holders. See /methodology/#corpus-placement.
What is the total institutional value of BUILDERS FIRSTSOURCE INC?▼
Institutions report $6.0M of BUILDERS FIRSTSOURCE INC as of Q4 2025.
How concentrated is ownership of BUILDERS FIRSTSOURCE INC?▼
The top five institutional holders account for 100% of the reported institutional value in BUILDERS FIRSTSOURCE INC, making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of BUILDERS FIRSTSOURCE INC?▼
Banque Transatlantique SA is the largest reported holder of BUILDERS FIRSTSOURCE INC with $4.7M across 44,922 shares as of Q4 2025.

Nationwide stocks with similar institutional value or holder count

Two 13F-derived peer sets for BUILDERS FIRSTSOURCE INC: nearest aggregate reported value and nearest institutional holder count, not catalog browse links.

Similar reported value

Nearest stocks by aggregate 13F reported value ($6.0M here).

VANGUARD WHITEHALL FDS $6.0M UBS GROUP AG $5.9M Unilever PLC $6.0M AMERICAN WTR WKS CO INC $5.9M

Similar holder count

Nearest stocks by number of disclosing 13F holders (6 here).

AKAMAI TECHNOLOGIES INC 6 ALEXANDRIA REAL ESTATE EQ IN 6 ALLETE INC 6 ALLIANCEBERNSTEIN HLDG L P 6

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-09-26.