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
100%
Elevated — premium selling regime
30-Day Avg
—
60-Day Avg
—
90-Day Avg
62%
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 |
|---|---|---|
| 20260716 | 100% | 2.4% |
| 20260715 | 100% | 2.4% |
| 20260714 | 0% | 2.3% |
| 20260713 | 50% | 2.3% |