Price Alert

Prothena Corporation (PRTA)

NASDAQ: PRTA · Real-Time Price · USD

8.49

-0.06 (-0.70%)

At close: Sep 08, 2025, 3:59 PM

8.49

0.00%

After-hours: Sep 08, 2025, 04:10 PM EDT

PRTA Option Overview

Overview for all option chains of PRTA. As of September 09, 2025, PRTA options have an IV of 228.73% and an IV rank of 126.47%. The volume is 4 contracts, which is 0.34% of average daily volume of 1,172 contracts. The volume put-call ratio is 0.33, indicating a bullish sentiment in the market.

Implied Volatility

Implied Volatility (30d)

228.73%

IV Rank

126.47%

Historical Volatility

49.28%

IV Low

80.74% on Oct 07, 2024

IV High

197.76% on May 26, 2025

Open Interest (OI)

Today's Open Interest

43,206

Put-Call Ratio

1.25

Put Open Interest

23,975

Call Open Interest

19,231

Open Interest Avg (30-day)

38,083

Today vs Open Interest Avg (30-day)

113.45%

Option Volume

Today's Volume

Put-Call Ratio

0.33

Put Volume

Call Volume

Volume Avg (30-day)

1,172

Today vs Volume Avg (30-day)

0.34%

Option Chain Statistics

This table provides a comprehensive overview of all PRTA options grouped by their expiration dates.

Expiration	Call Vol	Put Vol	P/C Vol	Call OI	Put OI	P/C OI	Implied Volatility	Max Pain
Sep 19, 2025	0	0	0	11,138	9,525	0.86	228.73%	7.5
Oct 17, 2025	0	0	0	221	913	4.13	95.4%	7.5
Dec 19, 2025	1	1	1	1,092	6,633	6.07	77.83%	7.5
Jan 16, 2026	2	0	0	5,971	6,877	1.15	126.77%	7.5
Mar 20, 2026	0	0	0	809	27	0.03	77.02%	5