SION (Sionna Therapeutics, Inc. Common Stock)
Historical IV Rank & Volatility Regime
IV Rank measures where SION's current 30-day implied volatility sits in its trailing 90-day distribution (0% = lowest in 90 days, 100% = highest). It's the most reliable signal for whether options on SION are priced rich or cheap relative to its own recent 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.
SION IV Rank Summary
Current
36%
Subdued — neutral to long-vol
30-Day Avg
52%
60-Day Avg
—
90-Day Avg
55%
90-Day Low
0%
90-Day High
100%
IV Rank is bounded 0%–100% by construction. Sustained levels above 75% historically
precede mean reversion in SION's implied vol; sustained sub-25% readings
often coincide with low-realized regimes ahead of catalyst events. See the
Vol Arb Screener for symbols where current IV
rank diverges most from realized volatility.
SION IV Rank — Last 90 Trading Days
| Date | IV Rank | Avg IV |
|---|---|---|
| 20260901 | 36% | 2.2% |
| 20260831 | 46% | 2.5% |
| 20260828 | 10% | 1.4% |
| 20260827 | 22% | 1.8% |
| 20260826 | 34% | 2.1% |
| 20260825 | 46% | 2.5% |
| 20260824 | 45% | 2.4% |
| 20260821 | 6% | 1.3% |
| 20260820 | 7% | 1.3% |
| 20260819 | 32% | 2.1% |
| 20260818 | 31% | 2.0% |
| 20260817 | 0% | 1.1% |
| 20260814 | 13% | 1.9% |
| 20260813 | 17% | 2.0% |
| 20260812 | 23% | 2.1% |
| 20260811 | 0% | 1.6% |
| 20260810 | 0% | 1.9% |
| 20260806 | 35% | 2.9% |
| 20260805 | 100% | 4.0% |
| 20260804 | 100% | 3.9% |
| 20260803 | 90% | 3.5% |
| 20260731 | 79% | 3.3% |
| 20260730 | 98% | 3.6% |
| 20260729 | 100% | 3.6% |
| 20260728 | 100% | 3.5% |
| 20260727 | 100% | 3.4% |
| 20260724 | 100% | 3.1% |
| 20260723 | 100% | 3.1% |
| 20260722 | 100% | 3.1% |
| 20260721 | 100% | 3.0% |
| 20260720 | 100% | 2.5% |
| 20260716 | 100% | 2.4% |
| 20260715 | 100% | 2.4% |
| 20260714 | 0% | 2.3% |
| 20260713 | 50% | 2.3% |