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Free · no sign-up · Q2 2026

Which funds own BLDR

Builders Firstsource Inc in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $255m between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went the other way: 6 managers trimmed or sold out against 2 buying.

Managers holding
3
at least, of 91 current
Combined value
$255m
as reported
Opened
1
new this quarter
Added to
1
already held
Trimmed or sold out
6
5 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

ManagerValueWeightSharesChange on the quarterAction
D1 Capital Partners LP
Long/short equity · $34.8bn book
$147m0.4%1,639,222opened1,639,222New
Holocene Advisors LP
Long/short equity · $44.4bn book
$96m0.2%1,066,869+$49m+503,988Added
Moore Capital Management LP
Macro · $6.7bn book
$13m0.2%139,385-$7.4m-102,408Trimmed

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

Ownership through time

At least 12 of the 95 managers whose filings are on file listed BLDR in Q2 2026, against 1 in Q4 2013. 2 managers fewer than in Q1 2026: 3 started positions; 2 listed it again; 2 sold out, by their own filings; 5 no longer listed it among the positions read, which can mean a holding below the listed range or a filing not yet made.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it
01224Q4 2013: 1Q2 2015: 1Q3 2015: 3Q4 2015: 1Q1 2016: 216Q2 2016: 4Q3 2016: 3Q4 2016: 1Q1 2017: 617Q2 2017: 3Q3 2017: 6Q4 2017: 5Q1 2018: 918Q2 2018: 2Q3 2018: 5Q4 2018: 2Q1 2019: 419Q2 2019: 5Q3 2019: 6Q4 2019: 11Q1 2020: 820Q2 2020: 7Q3 2020: 9Q4 2020: 6Q1 2021: 921Q2 2021: 13Q3 2021: 11Q4 2021: 18Q1 2022: 1822Q2 2022: 13Q3 2022: 14Q4 2022: 14Q1 2023: 1823Q2 2023: 20Q3 2023: 17Q4 2023: 24Q1 2024: 2024Q2 2024: 18Q3 2024: 19Q4 2024: 15Q1 2025: 1525Q2 2025: 17Q3 2025: 12Q4 2025: 14Q1 2026: 1426Q2 2026: 12
  • Q4 2013: 1
  • Q2 2015: 1
  • Q3 2015: 3
  • Q4 2015: 1
  • Q1 2016: 2
  • Q2 2016: 4
  • Q3 2016: 3
  • Q4 2016: 1
  • Q1 2017: 6
  • Q2 2017: 3
  • Q3 2017: 6
  • Q4 2017: 5
  • Q1 2018: 9
  • Q2 2018: 2
  • Q3 2018: 5
  • Q4 2018: 2
  • Q1 2019: 4
  • Q2 2019: 5
  • Q3 2019: 6
  • Q4 2019: 11
  • Q1 2020: 8
  • Q2 2020: 7
  • Q3 2020: 9
  • Q4 2020: 6
  • Q1 2021: 9
  • Q2 2021: 13
  • Q3 2021: 11
  • Q4 2021: 18
  • Q1 2022: 18
  • Q2 2022: 13
  • Q3 2022: 14
  • Q4 2022: 14
  • Q1 2023: 18
  • Q2 2023: 20
  • Q3 2023: 17
  • Q4 2023: 24
  • Q1 2024: 20
  • Q2 2024: 18
  • Q3 2024: 19
  • Q4 2024: 15
  • Q1 2025: 15
  • Q2 2025: 17
  • Q3 2025: 12
  • Q4 2025: 14
  • Q1 2026: 14
  • Q2 2026: 12
Their combined reported value
$0$2bn$5bnQ4 2013: $78kQ2 2015: $12mQ3 2015: $4.3mQ4 2015: $3.8mQ1 2016: $13m16Q2 2016: $78mQ3 2016: $59mQ4 2016: $55mQ1 2017: $118m17Q2 2017: $118mQ3 2017: $175mQ4 2017: $144mQ1 2018: $222m18Q2 2018: $109mQ3 2018: $128mQ4 2018: $95mQ1 2019: $127m19Q2 2019: $42mQ3 2019: $115mQ4 2019: $301mQ1 2020: $136m20Q2 2020: $165mQ3 2020: $128mQ4 2020: $430mQ1 2021: $1.4bn21Q2 2021: $1.6bnQ3 2021: $1.9bnQ4 2021: $3.1bnQ1 2022: $2.2bn22Q2 2022: $1.5bnQ3 2022: $2.0bnQ4 2022: $1.9bnQ1 2023: $2.7bn23Q2 2023: $3.0bnQ3 2023: $2.6bnQ4 2023: $3.4bnQ1 2024: $3.9bn24Q2 2024: $2.6bnQ3 2024: $4.7bnQ4 2024: $3.1bnQ1 2025: $2.9bn25Q2 2025: $2.6bnQ3 2025: $2.4bnQ4 2025: $713mQ1 2026: $777m26Q2 2026: $941m
  • Q4 2013: $78k
  • Q2 2015: $12m
  • Q3 2015: $4.3m
  • Q4 2015: $3.8m
  • Q1 2016: $13m
  • Q2 2016: $78m
  • Q3 2016: $59m
  • Q4 2016: $55m
  • Q1 2017: $118m
  • Q2 2017: $118m
  • Q3 2017: $175m
  • Q4 2017: $144m
  • Q1 2018: $222m
  • Q2 2018: $109m
  • Q3 2018: $128m
  • Q4 2018: $95m
  • Q1 2019: $127m
  • Q2 2019: $42m
  • Q3 2019: $115m
  • Q4 2019: $301m
  • Q1 2020: $136m
  • Q2 2020: $165m
  • Q3 2020: $128m
  • Q4 2020: $430m
  • Q1 2021: $1.4bn
  • Q2 2021: $1.6bn
  • Q3 2021: $1.9bn
  • Q4 2021: $3.1bn
  • Q1 2022: $2.2bn
  • Q2 2022: $1.5bn
  • Q3 2022: $2.0bn
  • Q4 2022: $1.9bn
  • Q1 2023: $2.7bn
  • Q2 2023: $3.0bn
  • Q3 2023: $2.6bn
  • Q4 2023: $3.4bn
  • Q1 2024: $3.9bn
  • Q2 2024: $2.6bn
  • Q3 2024: $4.7bn
  • Q4 2024: $3.1bn
  • Q1 2025: $2.9bn
  • Q2 2025: $2.6bn
  • Q3 2025: $2.4bn
  • Q4 2025: $713m
  • Q1 2026: $777m
  • Q2 2026: $941m

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Largest increases, by shares

Largest decreases, by shares

ManagerValue over timeFirst listedLargestQ2 2026
Wellington Management Group LLPQ1 2021$1.4bn$310m
D1 Capital Partners LPQ2 2026$147m$147m
Holocene Advisors LPQ3 2018$95m$95m
Capital World InvestorsQ1 2021$159m$90m
Arrowstreet Capital LPQ1 2018$98m$82m
Janus Henderson Group LtdQ1 2025$100m$74m
MFS Investment ManagementQ1 2021$292m$72m
Capital Research Global InvestorsQ3 2024$182m$53m
Moore Capital Management LPQ4 2021$26m$12m
Bridgewater Associates LPQ2 2022$37m$4.6m
Artisan Partners LPQ3 2025$298k$259k
First Eagle Investment Management LLCQ2 2026$15k$15k
Fidelity (FMR LLC)Q4 2020$2.0bnlast listed Q3 2025
Invesco LtdQ1 2018$432mlast listed Q1 2025
AllianceBernstein LPQ3 2022$369mlast listed Q2 2025
Baillie Gifford & CoQ3 2024$267mlast listed Q3 2025
AQR Capital Management LLCQ2 2021$200mlast listed Q4 2024
Millennium Management LLCQ1 2021$155mlast listed Q3 2024
Ruane Cunniff & Goldfarb LPQ2 2016$116mlast listed Q1 2025
Man Group PLCQ1 2018$110mlast listed Q4 2024
Renaissance Technologies LLCQ3 2019$105mlast listed Q4 2025
Balyasny Asset Management LLCQ1 2016$103mlast listed Q1 2024

What BLDR is worth

Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.

Build the comp set around BLDR →

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

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The holdings, every quarter, and the week between

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