Ultragenyx Pharmaceutical, Inc. $(RARE)$ is currently at $18.98, down $15.21 or 44.49%

--Would be new all-time closing low (Based on available data back to Jan. 31, 2014)

--Would be largest percent decrease on record (Based on available data back to Jan. 31, 2014)

--Currently down three of the past four days

--Currently down two consecutive days; down 45.11% over this period

--Worst two-day stretch on record (Based on available data back to Jan. 31, 2014)

--Down 45.38% month-to-date; on pace for worst month since Jan. 2016, when it fell 49.95%

--Down 54.88% year-to-date; on pace for worst year on record (Based on available data back to Jan. 31, 2014)

--Down 89.3% from its all-time closing high of $177.39 on Dec. 23, 2020

--Down 55.10% from 52 weeks ago (Dec. 30, 2024), when it closed at $42.27

--Down 58.54% from its 52-week closing high of $45.78 on Feb. 6, 2025

--Would be a new 52-week closing low

--Traded as low as $18.41; new all-time intraday low (Based on available data back to Jan. 31, 2014)

--Down 46.15% at today's intraday low; largest intraday percent decrease on record (Based on available data back to Jan. 31, 2014)

All data as of 2:07:10 PM ET

Source: Dow Jones Market Data, FactSet

(END) Dow Jones Newswires

December 29, 2025 14:11 ET (19:11 GMT)

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