RARE Ultragenyx Pharmaceutical Inc.: institutional ownership and insider trading
326 funds reported holding $3.94B of Ultragenyx Pharmaceutical Inc. in their latest 13F filings; in Q2 2026 funds net bought $338M, with 59 new positions and 41 funds selling out; over the last 12 months insiders bought $0 and sold $3.81M on the open market.
Famous investors holding RARE
- Two Sigma (Two Sigma Investments): $121M, 0.1% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $57.8M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $13.8M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $25.4M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $11.6M, 0.0% of the portfolio
Largest institutional holders of RARE
- BlackRock, Inc. (BLK) — $356M
- RTW INVESTMENTS, LP — $260M
- VANGUARD GROUP INC — $236M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $227M
- AQR CAPITAL MANAGEMENT LLC — $214M
- STATE STREET CORP (STT, STT-PG) — $206M
- VANGUARD CAPITAL MANAGEMENT LLC — $143M
- TWO SIGMA INVESTMENTS, LP — $121M
- SANDS CAPITAL MANAGEMENT, LLC — $105M
- JACOBS LEVY EQUITY MANAGEMENT, INC — $98.2M
Recent RARE insider trades
- Oct 15, 2026: Horn Howard sold 7,066 shares ($108K)
- Sep 15, 2026: Huizenga Theodore Alan sold 1,283 shares ($17.4K)
- Sep 3, 2026: Huizenga Theodore Alan sold 161 shares ($2.25K)
- Aug 3, 2026: Horn Howard sold 4,696 shares ($117K)
Members of Congress trading RARE
- Sep 29, 2026: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Mar 3, 2026: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Feb 18, 2026: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Aug 8, 2025: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Jul 15, 2025: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
5%+ owners
- BlackRock, Inc.: 8.3% (Schedule 13G/A, filed Jul 30, 2026)
- RTW Investments, LP: 7.9% (Schedule 13G, filed Aug 14, 2026)
- Vanguard Portfolio Management: 7.0% (Schedule 13G/A, filed Jul 31, 2026)
- AQR Capital Management, LLC: 6.7% (Schedule 13G, filed Aug 13, 2026)
- Madison Avenue International LP: 6.4% (Schedule 13G, filed Oct 20, 2026)
- STATE STREET CORPORATION: 6.3% (Schedule 13G, filed Aug 7, 2026)