Option chain for Prothena PLC - (PRTA): calls and puts for every expiration and strike, with quotes, volume, open interest, implied volatility and greeks. As of Oct 30, 2026, PRTA had 6 option expirations, from Nov 20, 2026 to Jan 21, 2028, and 98 contracts traded that day. The nearest expiration, Nov 20, 2026, had an at-the-money implied volatility of 53.0% (+17% on the day) and 0 contracts traded; the busiest was Dec 18, 2026, with 51.

For the latest figures, see PRTA options overview.

Key numbers

Expirations: at-the-money implied volatility, change on the day, volume

Nov 20, 2026 (21 days): ATM IV 53.0% (+17%), volume 0
Dec 18, 2026 (49 days): ATM IV 47.5% (-4%), volume 51
Jan 15, 2027 (77 days): ATM IV 48.9% (-14%), volume 47
Mar 19, 2027 (140 days): ATM IV 41.6% (-18%), volume 0
Jun 17, 2027 (230 days): ATM IV 43.7% (-3%), volume 0
Jan 21, 2028 (448 days): ATM IV 53.6% (-6%), volume 0

Data as of October 30, 2026.

PRTA Option Chain

Detailed and comprehensive option chain for each expiration listed for PRTA. Includes volume, open interest, implied volatility, and bid/ask for each strike. Investigate further by clicking on a strike and seeing trade activity, volatility movement, and yesterday's closing values. Use the built-in options profit calculator to see the profit or loss of any PRTA options strategy.

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