Prothena Corporation (PRTA)
NASDAQ: PRTA
· Real-Time Price · USD
8.20
-0.04 (-0.49%)
At close: Aug 29, 2025, 3:59 PM
8.20
0.00%
After-hours: Aug 29, 2025, 04:26 PM EDT
PRTA Option Overview
Overview for all option chains of PRTA. As of August 30, 2025, PRTA options have an IV of 170.28% and an IV rank of 76.52%. The volume is 525 contracts, which is 39.36% of average daily volume of 1,334 contracts. The volume put-call ratio is 3.23, indicating a bearish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
170.28%IV Rank
76.52%Historical Volatility
49.07%IV Low
80.74% on Oct 07, 2024IV High
197.76% on May 26, 2025Open Interest (OI)
Today's Open Interest
41,683Put-Call Ratio
1.17Put Open Interest
22,511Call Open Interest
19,172Open Interest Avg (30-day)
32,623Today vs Open Interest Avg (30-day)
127.77%Option Volume
Today's Volume
525Put-Call Ratio
3.23Put Volume
401Call Volume
124Volume Avg (30-day)
1,334Today vs Volume Avg (30-day)
39.36%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 | 21 | 40 | 1.9 | 11,188 | 9,554 | 0.85 | 170.28% | 7.5 |
| Oct 17, 2025 | 10 | 24 | 2.4 | 175 | 901 | 5.15 | 132.55% | 7.5 |
| Dec 19, 2025 | 89 | 287 | 3.22 | 1,049 | 5,188 | 4.95 | 73.59% | 7.5 |
| Jan 16, 2026 | 0 | 50 | 0 | 5,972 | 6,842 | 1.15 | 130.24% | 7.5 |
| Mar 20, 2026 | 4 | 0 | 0 | 788 | 26 | 0.03 | 60.4% | 5 |