§ BIOTECHNOLOGY
USD · BiotechnologyRARE
ULTRAGENYX PHARMACEUTICAL IN
USDSector · BiotechnologyBeta · 0.27
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
179 increased/new, 103 decreased/exited (13F)
AC 13F Analysis
§ 04 · FUNDAMENTALS · THE BOOKS
| P/B | 15.22 | EPS (TTM) | -5.83 |
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| BlackRock, Inc. | 7.3M | 0.0% | +10% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.4M | n/a | n/a |
| State Street | 5.0M | 0.0% | +17% |
| AQR Capital Management | 4.6M | 0.0% | +237% |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2M | n/a | n/a |
| RTW INVESTMENTS, LP | 3.6M | 0.8% | +22% |
◇ AC INTELLIGENCE
Top institutional owners for RARE as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER95.3% · 0 holders
OTHER2.8% · 206 holders
DEALER / BANK0.5% · 31 holders
PASSIVE / INDEX0.5% · 8 holders
QUALITY / COMPOUNDER0.3% · 18 holders
SYSTEMATIC / QUANT0.2% · 11 holders
TACTICAL / MACRO0.2% · 4 holders
ACTIVIST0.1% · 1 holder
INCOME / DEFENSIVE0.0% · 14 holders
GROWTH / MOMENTUM0.0% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for RARE in the last 180 days.