Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
RARE
ULTRAGENYX PHARMACEUTICAL INData as of 2026 Q1 (03-31) · 13F snapshot
Summary
ULTRAGENYX PHARMACEUTICAL IN (RARE) is held by 7 tracked hedge-fund managers, a combined reported value of ~$124.95M; the largest are Ken Griffin, Izzy Englander, Steven Cohen. This quarter: 1 new, 2 added, 1 trimmed. 4 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Heating up
Gurus holding7
Congress trades4
Price$24.35vs quarter-end+16.23%
Sectors0
This quarter's moves
Top holderKen GriffinNew1
Added2
Trimmed / sold1
Value $3.09M0.1% of portfolio85,4452025 Q1
Value $2.68M— of portfolio128,1002026 Q1
Value $2.68M— of portfolio127,8002026 Q1
Value $2.42M— of portfolio58,8002024 Q2
Value $727.2K— of portfolio20,0002025 Q2
Value $563.6K— of portfolio15,5002025 Q2
Joel GreenblattHold
Value $349.1K0.0% of portfolio7,4782024 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Stanley Druckenmiller | $3.09M | 0.1% | Hold |
| Ken GriffinCALL | $2.68M | — | — |
| Ken GriffinPUT | $2.68M | — | — |
| Steven CohenPUT | $2.42M | — | — |
| Izzy EnglanderCALL | $727.2K | — | — |
| Izzy EnglanderPUT | $563.6K | — | — |
| Joel Greenblatt | $349.1K | 0.0% | Hold |