Protagonist Therapeutics - 9 Year Stock Price History | PTGX

The latest closing stock price for Protagonist Therapeutics as of June 25, 2025 is 54.44.

  • An investor who bought $1,000 worth of Protagonist Therapeutics stock at the IPO in 2016 would have $3,653 today, roughly 4 times their original investment - a 18.63% compound annual growth rate over 9 years.
  • The all-time high Protagonist Therapeutics stock closing price was 59.76 on March 11, 2025.
  • The Protagonist Therapeutics 52-week high stock price is 60.60, which is 11.3% above the current share price.
  • The Protagonist Therapeutics 52-week low stock price is 32.50, which is 40.3% below the current share price.
  • The average Protagonist Therapeutics stock price for the last 52 weeks is 43.28.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Protagonist Therapeutics - 9 Year Stock Price History | PTGX

  • An investor who bought $1,000 worth of Protagonist Therapeutics stock at the IPO in 2016 would have $3,653 today, roughly 4 times their original investment - a 18.63% compound annual growth rate over 9 years.
  • The all-time high Protagonist Therapeutics stock closing price was 59.76 on March 11, 2025.
  • The Protagonist Therapeutics 52-week high stock price is 60.60, which is 11.3% above the current share price.
  • The Protagonist Therapeutics 52-week low stock price is 32.50, which is 40.3% below the current share price.
  • The average Protagonist Therapeutics stock price for the last 52 weeks is 43.28.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.