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BLDR · Builders FirstSource, Inc.

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$70.21 -0.11 (-0.16%) At close · Aug 21
Market Cap
$7.55B
Shares
107.60M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 668
Total Value: $9,861,827,924
Total Shares: 110,267,282

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 668 13F filers · Δ vs Mar 31, 2026
Top Holder
7.1%
Sep 2023 → Jun 2026 · range 7.1% – 13.1%
−0.9 pts
Top 5
25.0%
Sep 2023 → Jun 2026 · range 25.0% – 38.4%
−1.4 pts
Top 10
40.4%
Sep 2023 → Jun 2026 · range 39.3% – 49.1%
+1.1 pts
HHI
227
Sep 2023 → Jun 2026 · range 227 – 407
Broadly held−3

Quarterly Activity

vs Mar 31, 2026
New
89
Increased
243
Decreased
265
Sold Out
159
Unchanged
71
Holder count: -70
Institutional value: +9.7%
Shares held: +0.9%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 698
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1316835 CUSIP 12008R107 13F (30d) 579 filings 570 filers Visit website Investor relations