Whale Analyzer
BLDR Institutional Holders and 13F Ownership
Compare 11 tracked holders of BLDR, their reported positions and disclosed changes. Coverage is limited to the investors tracked by Whale Analyzer; these records do not establish all shareholders or current trades. Available original SEC filings for tracked 13F holders are linked below. Top tracked holders include Brave Warrior Advisors, D1 Capital Partners, Capital Research Global Investors, and Semper Augustus Investments.
Continue to the live BLDR dashboardTop holders
| Investor | Reported value | Shares | Change | Report date |
|---|---|---|---|---|
| Brave Warrior Advisors 13F holdings | $209.4M | 2.3M | Reduced | 2026-06-30 |
| D1 Capital Partners 13F holdings | $146.7M | 1.6M | New | 2026-06-30 |
| Capital Research Global Investors 13F holdings | $53.2M | 593.7K | New | 2026-06-30 |
| Semper Augustus Investments 13F holdings | $49.5M | 553.7K | Increased | 2026-06-30 |
| Robotti & Co 13F holdings | $45.6M | 510.2K | Reduced | 2026-06-30 |
| Turtle Creek Asset Management 13F holdings | $8.6M | 96.1K | Increased | 2026-06-30 |
| Giverny Capital 13F holdings | $8.2M | 91.5K | Reduced | 2026-06-30 |
| Bridgewater Associates 13F holdings | $4.6M | 51.3K | Increased | 2026-06-30 |
| Tweedy Browne 13F holdings | $1.8M | 19.6K | New | 2026-06-30 |
| Miller Value Partners 13F holdings | $1.7M | 19.1K | Increased | 2026-06-30 |
| First Eagle Investment Management 13F holdings | $14.9K | 167 | New | 2026-06-30 |
Original SEC filing sources
These recorded filings support the tracked 13F rows included in the aggregate reported values on this page. See each holder profile for source coverage and context for other disclosure types.
- Brave Warrior Advisors SEC filing (0001172661-26-003728) · report date 2026-06-30
- D1 Capital Partners SEC filing (0001172661-26-003662) · report date 2026-06-30
- Capital Research Global Investors SEC filing (0001422848-26-000094) · report date 2026-06-30
- Semper Augustus Investments SEC filing (0001941040-26-000625) · report date 2026-06-30
- Robotti & Co SEC filing (0001140361-26-031881) · report date 2026-06-30
- Turtle Creek Asset Management SEC filing (0001193125-26-350256) · report date 2026-06-30
- Giverny Capital SEC filing (0001641864-26-000010) · report date 2026-06-30
- Bridgewater Associates SEC filing (0001350694-26-000003) · report date 2026-06-30
- Tweedy Browne SEC filing (0001193125-26-340443) · report date 2026-06-30
- Miller Value Partners SEC filing (0001135778-26-000016) · report date 2026-06-30
- First Eagle Investment Management SEC filing (0001325447-26-000033) · report date 2026-06-30
Tracked-sample concentration
Reported position value for BLDR is highly concentrated within this tracked-holder sample. These percentages are not market-wide ownership shares.
- Largest tracked holder: 39.6% of aggregate reported value in this sample
- Top 5 tracked holders: 95.3% of aggregate reported value in this sample
- Top 10 tracked holders: 100.0% of aggregate reported value in this sample
Whale activity this quarter
Across 11 tracked holders, 8 increased, 3 reduced. Net positioning is net buying.
- Brave Warrior Advisors ($209.4M) (▼ 1.3% qoq shares)
- D1 Capital Partners ($146.7M) · modeled avg cost estimate $66.39
- Capital Research Global Investors ($53.2M) · modeled avg cost estimate $36.24
- Semper Augustus Investments ($49.5M) (▲ 142.6% qoq shares) · modeled avg cost estimate $72.96
- Robotti & Co ($45.6M) (▼ 2.6% qoq shares)
- Turtle Creek Asset Management ($8.6M) (▲ 1.2% qoq shares) · modeled avg cost estimate $77.88
- Giverny Capital ($8.2M) (▼ 0.4% qoq shares)
- Bridgewater Associates ($4.6M) (▲ 1162.5% qoq shares)
Modeled cost estimate vs current price
The share-weighted modeled cost estimate across 4 covered tracked holders is $61.82 versus a current price of $62.54, so BLDR trades above that estimate (+1.2%). This model does not establish any filer's actual purchase price, unrealized gain, or investment return.
Sector positioning — Other
BLDR sits within the Other sector alongside 1558 other tracked names. Compare reported positions across tracked peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time or market-wide ownership totals. Open the live BLDR dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
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Learn more in Whale Analyzer Academy
Deepen your read on BLDR with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns BLDR stock?
Whale Analyzer tracks 11 public-disclosure holders of BLDR with a combined reported value of $529.3M. See the holder table above for the largest tracked positions.
Which top funds are buying BLDR?
Tracked holders were net buying last quarter — 8 increased, 3 reduced. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is the tracked BLDR sample?
The top five tracked holders account for 95.3% of aggregate reported value in this tracked sample. This is not a market-wide ownership percentage.
How does BLDR compare with the modeled cost estimate?
The share-weighted modeled cost estimate across 4 covered tracked holders is $61.82 versus a current price of $62.54 (+1.2%). It is not an actual purchase price, unrealized gain, or investment return.
What does 13F ownership mean for BLDR?
These are historical reported positions from tracked filers, not real-time ownership or a complete shareholder register. Use the interactive BLDR dashboard to explore them, or read our 13F Alpha Signals Guide.