🔴 Ultragenyx is trading 4.1% down today as higher yields pressure biotech stocks

Ultragenyx is trading 4.1% down now at $25.07, primarily as higher yields and broader risk-off trading pressure growth-oriented biotechnology stocks.

• No fresh company-specific announcement was identified for August 18, 2026.
• The Nasdaq is down 1.23%, the S&P 500 is down 0.57%, and the 30-year Treasury yield has risen to 5.33% amid renewed U.S.-Iran uncertainty.
• The upcoming August 23 DTX401 FDA action date remains an important catalyst, but available coverage does not directly link it to today’s decline.