Sutro Biopharma (STRO) options traded 64 contracts on October 20, 2026 (8 calls and 56 puts, a put/call ratio of 7.00), compared with a 30-day average of 93. Options price a move of about ±5.7% by the nearest expiration.

Key numbers

30-day implied volatility (IV30): 83.6%
Implied move by the nearest expiration: ±5.7%
Option volume: 64 contracts (8 calls, 56 puts); 30-day average 93

Data as of October 20, 2026.

STRO Option Breakdown

A breakdown of key statistics for each option expiration listed for STRO. View implied volatility, volatility skew, volume, open interest, straddle premiums, and liquidity -- including bid/ask spread and NBBO bid/ask sizes. Includes links to the option chain, as well as numerous detailed charts.

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