PRTA (Prothena Corporation plc Ordinary Shares)
Expected Move & Straddle Price History
The expected move for PRTA is derived from at-the-money straddle pricing — the market's implied one-standard-deviation move through the next 30 days. Comparing it to realized moves reveals when options are pricing in too much (premium-selling regime) vs too little (premium-buying regime).
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
Current PRTA Expected Move
30-Day Straddle
$0.98
7-Day Straddle
$0.98
Avg IV
2.4%
IV Rank
73%
Implied one-standard-deviation move through the next 30 days. Compare to PRTA's realized
move over the same window to gauge whether options are pricing in too much (premium-selling regime)
or too little (premium-buying regime). The
Expected Move Tracker ranks every symbol by
this measure.
PRTA Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | Avg IV | IV Rank |
|---|---|---|---|---|
| 20260925 | $0.98 | $0.98 | 2.4% | 73% |
| 20260924 | $2.75 | $2.75 | 1.9% | 53% |
| 20260923 | $1.00 | $1.00 | 1.3% | 28% |
| 20260922 | $1.17 | $1.17 | 1.1% | 19% |
| 20260921 | $2.02 | $2.02 | 1.9% | 50% |
| 20260918 | $1.78 | $0.97 | 1.4% | 34% |
| 20260917 | $2.25 | $0.93 | 1.3% | 30% |
| 20260916 | $5.10 | $0.67 | 1.6% | 41% |
| 20260915 | $4.40 | $2.48 | 2.3% | 66% |
| 20260914 | $1.27 | $0.62 | 1.1% | 22% |
| 20260911 | $1.68 | $0.78 | 1.2% | 23% |
| 20260910 | $1.27 | $0.85 | 1.1% | 23% |
| 20260909 | $1.48 | $0.72 | 1.3% | 27% |
| 20260908 | $1.93 | $1.15 | 1.2% | 26% |
| 20260904 | $4.20 | $2.62 | 0.9% | 13% |
| 20260903 | $1.65 | $0.77 | 0.6% | 0% |
| 20260902 | $1.65 | $1.65 | 2.0% | 51% |
| 20260901 | $0.85 | $0.85 | 1.6% | 38% |
| 20260831 | $0.85 | $0.85 | 1.4% | 28% |
| 20260828 | $2.65 | $2.65 | 1.4% | 27% |
| 20260827 | $0.95 | $0.95 | 1.6% | 36% |
| 20260826 | $0.90 | $0.90 | 1.0% | 14% |
| 20260825 | $0.95 | $0.95 | 1.7% | 39% |
| 20260824 | $1.10 | $1.10 | 1.8% | 33% |
| 20260821 | $2.85 | $1.35 | 1.4% | 24% |
| 20260820 | $1.17 | $0.47 | 1.4% | 23% |
| 20260819 | $1.00 | $0.70 | 1.2% | 16% |
| 20260818 | $2.05 | $0.57 | 1.5% | 26% |
| 20260817 | $1.15 | $0.45 | 1.4% | 22% |
| 20260814 | $1.20 | $0.47 | 1.9% | 38% |
| 20260813 | $1.10 | $0.60 | 1.7% | 31% |
| 20260812 | $1.02 | $0.60 | 1.1% | 13% |
| 20260811 | $1.25 | $0.90 | 1.2% | 16% |
| 20260810 | $1.10 | $1.27 | 1.1% | 13% |
| 20260806 | $1.32 | $1.05 | 1.2% | 18% |
| 20260805 | $4.75 | $4.75 | 1.9% | 38% |
| 20260804 | $1.23 | $1.23 | 1.7% | 31% |
| 20260803 | $1.25 | $1.25 | 1.5% | 25% |
| 20260731 | $3.00 | $3.00 | 2.4% | 54% |
| 20260730 | $1.25 | $1.25 | 1.8% | 36% |
| 20260729 | $1.48 | $1.48 | 1.6% | 29% |
| 20260728 | $1.15 | $1.15 | 1.9% | 38% |
| 20260727 | $1.10 | $1.10 | 1.5% | 26% |
| 20260724 | $1.25 | $1.25 | 0.7% | 1% |
| 20260723 | $0.93 | $0.93 | 1.5% | 25% |
| 20260722 | $1.82 | $1.82 | 1.9% | 37% |
| 20260721 | $1.25 | $1.25 | 0.7% | 0% |
| 20260720 | $1.40 | $1.40 | 1.3% | 20% |
| 20260716 | $1.62 | $0.80 | 1.4% | 23% |
| 20260715 | $1.60 | $0.82 | 1.4% | 23% |
| 20260714 | $1.48 | $0.88 | 1.3% | 21% |
| 20260713 | $1.60 | $0.60 | 1.7% | 33% |
| 20260710 | $1.75 | $0.95 | 1.5% | 26% |
| 20260709 | $1.98 | $0.78 | 1.1% | 15% |
| 20260708 | $1.90 | $0.93 | 0.9% | 7% |
| 20260707 | $1.50 | $0.92 | 0.8% | 4% |
| 20260706 | $1.93 | $1.00 | 1.3% | 18% |
| 20260702 | $1.02 | $1.02 | 1.5% | 25% |
| 20260701 | $1.18 | $1.18 | 1.6% | 28% |