Protagonist Therapeutics, Inc. (PTGX)

Last Closing Price: 99.19 (2026-05-22)

Implied Volatility Skew (30-Day)

Implied Volatility Skew: A measurement that quantifies the difference in implied volatility of options at lower and higher strike prices.

Protagonist Therapeutics, Inc. (PTGX) had 30-Day Implied Volatility Skew of 0.0833 for 2026-05-21.