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CLOSED · 21:10 ET
Market ClerkRecap
Wed Oct 21 · markets closed2 signals today78 insider buys this week · $240.8MCIRO short report next: Oct 31The week ahead

RARE

Ultragenyx Pharmaceutical Inc.
NASDAQ · HEALTH CARE · PHARMACEUTICAL PREPARATIONS
15.92
−0.10 −0.62%
USD · Oct 21, 07:40 p.m. ET

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Short interest

FINRA · TWICE MONTHLY
Report dateShares shortChange% of shares outAvg daily volumeDays to cover
2026-08-3117.1M+1.3M17.39%2.1M8.0
2026-08-1415.9M+924K16.12%2M7.8
2026-07-3115M+1.5M15.18%1.8M8.3
2026-07-1513.4M−2.8M13.63%1.9M6.9

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