Prothena PLC - (PRTA) options traded 101 contracts on November 6, 2026 (100 calls and 1 puts, a put/call ratio of 0.01), compared with a 30-day average of 178. Options price a move of about ±3.5% by the nearest expiration.

Key numbers

30-day implied volatility (IV30): 56.8%
Implied move by the nearest expiration: ±3.5%
Option volume: 101 contracts (100 calls, 1 puts); 30-day average 178

Data as of November 6, 2026.

PRTA Option Breakdown

A breakdown of key statistics for each option expiration listed for PRTA. 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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