Implied Volatility Surging for Sutro Biopharma (STRO) Stock Options Posted byZacks Equity Research January 7, 2022 Leave a comment on Implied Volatility Surging for Sutro Biopharma (STRO) Stock Options Investors need to pay close attention to Sutro Biopharma (STRO) stock based on the movements in the options market lately.