Institutional Ownership
Ultragenyx Pharmaceutical In
CUSIP 90400D108COMRAREQ1 2026
13D / 13G Filings
45
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
16.9%
Max % of class reported
Institutional Holders
287
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
45 filings · latest Feb 5, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 5, 2026 | Fmr LLC | 13G/A | 3.5% | 3.35M | SEC |
| 2 | Nov 5, 2025 | Fmr LLC | 13G | 8.3% | 7.96M | SEC |
| 3 | Apr 24, 2025 | Blackrock, Inc. | 13G/A | 5.1% | 4.82M | SEC |
| 4 | Feb 12, 2025 | Sands Capital Management, LLC | 13G/A | 4.7% | 4.30M | SEC |
| 5 | Feb 10, 2025 | Wellington Management Group LLP | 13G/A | 2.7% | 2.46M | SEC |
| 6 | Nov 14, 2024 | Rtw Investments, LP | 13G/A | 2.1% | 1.97M | SEC |
| 7 | Feb 14, 2024 | Rtw Investments, LP | 13G/A | 8.4% | 6.89M | SEC |
| 8 | Feb 14, 2024 | Price T Rowe Associates Inc /Md/ | 13G/A | 4.2% | 3.45M | SEC |
| 9 | Feb 13, 2024 | Vanguard Group Inc | 13G/A | 10.6% | 8.67M | SEC |
| 10 | Feb 13, 2024 | Sands Capital Management, LLC | 13G | 5.0% | 4.12M | SEC |
35 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Ultragenyx Pharmaceutical In.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 7.30M | $152.93M |
| 2 | State Street Corp | 5.02M | $105.20M |
| 3 | Aqr Capital Management LLC | 4.58M | $95.91M |
| 4 | Rtw Investments, LP | 3.65M | $76.44M |
| 5 | Sands Capital Management, LLC | 3.21M | $67.34M |
| 6 | Sofinnova Investments, Inc. | 3.15M | $65.91M |
| 7 | Wellington Management Group LLP | 2.64M | $55.33M |
| 8 | Bellevue Group AG | 2.38M | $49.86M |
| 9 | Assenagon Asset Management S.A. | 2.26M | $47.30M |
| 10 | Two Sigma Investments, LP | 2.21M | $46.21M |