Builders FirstSource
BLDR
766 hedge funds and large institutions have $10.8B invested in Builders FirstSource in 2025 Q4 according to their latest regulatory filings, with 116 funds opening new positions, 261 increasing their positions, 302 reducing their positions, and 119 closing their positions.
1% more call options, than puts
Call options by funds: $160M | Put options by funds: $158M
0% more funds holding in top 10
Funds holding in top 10: 13 → 13 (0)
3% less first-time investments, than exits
New positions opened: 116 | Existing positions closed: 119
1% less funds holding
Funds holding: 777 → 766 (-11)
6.33% less ownership
Funds ownership: 101.37% → 95.04% (-6.3%)
14% less repeat investments, than reductions
Existing positions increased: 261 | Existing positions reduced: 302
20% less capital invested
Capital invested by funds: $13.6B → $10.8B (-$2.77B)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$114M |
| 2 |
CCM
Coliseum Capital Management
Rowayton,
Connecticut
|
+$87.7M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
+$81.6M |
| 4 |
Focus Partners Wealth
Boston,
Massachusetts
|
+$77.2M |
| 5 |
BWA
Brave Warrior Advisors
New York
|
+$64.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$891M |
| 2 |
VOYA Investment Management
Atlanta,
Georgia
|
-$179M |
| 3 |
Baillie Gifford & Co
Edinburgh,
United Kingdom
|
-$178M |
| 4 |
Capital International Investors
Los Angeles,
California
|
-$114M |
| 5 |
Kovitz Investment Group Partners
Chicago,
Illinois
|
-$83.1M |
BLDR Hedge Fund Activity: Q4 2025 in Review
766 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Builders FirstSource (BLDR) for Q4 2025, worth a combined $10.8B — down 20% from $13.6B a quarter earlier.
Sellers outnumbered buyers: 119 funds closed out of BLDR and 116 opened new positions — a net loss of 3 holders — while 302 trimmed existing stakes and 261 added.
The largest buyer was Citadel Advisors, adding an estimated $114M. The largest seller was Fidelity Investments, cutting an estimated $891M.
- 766 institutional investors held Builders FirstSource (BLDR) as of Q4 2025, down from 777 in Q3 2025.
- Funds reported $10.8B of Builders FirstSource stock for Q4 2025, down 20% quarter-over-quarter.
- 116 funds opened new Builders FirstSource positions in Q4 2025 and 119 closed out, a net change of -3 holders.
- The largest Builders FirstSource buyer in Q4 2025 was Citadel Advisors, an estimated $114M added.
- The largest Builders FirstSource seller in Q4 2025 was Fidelity Investments, an estimated $891M sold.
Based on aggregated 13F filings for Q4 2025.