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Ratios

Prothena Corp Public (PRTA) Common Equity (2016 - 2025)

Historic Common Equity for Prothena Corp Public (PRTA) over the last 14 years, with Q3 2025 value amounting to $295.0 million.

  • Prothena Corp Public's Common Equity fell 4479.6% to $295.0 million in Q3 2025 from the same period last year, while for Sep 2025 it was $295.0 million, marking a year-over-year decrease of 4479.6%. This contributed to the annual value of $486.9 million for FY2024, which is 1326.04% down from last year.
  • According to the latest figures from Q3 2025, Prothena Corp Public's Common Equity is $295.0 million, which was down 4479.6% from $324.3 million recorded in Q2 2025.
  • Prothena Corp Public's Common Equity's 5-year high stood at $622.0 million during Q4 2022, with a 5-year trough of $234.6 million in Q1 2021.
  • Moreover, its 5-year median value for Common Equity was $486.9 million (2024), whereas its average is $467.5 million.
  • Per our database at Business Quant, Prothena Corp Public's Common Equity surged by 15327.54% in 2021 and then plummeted by 4479.6% in 2025.
  • Over the past 5 years, Prothena Corp Public's Common Equity (Quarter) stood at $466.0 million in 2021, then soared by 33.47% to $622.0 million in 2022, then dropped by 9.75% to $561.4 million in 2023, then decreased by 13.26% to $486.9 million in 2024, then plummeted by 39.42% to $295.0 million in 2025.
  • Its Common Equity was $295.0 million in Q3 2025, compared to $324.3 million in Q2 2025 and $437.7 million in Q1 2025.