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Ameren — Implied volatility rank, VRP edge, and volatility regime
Ameren (AEE) is a Utilities stock with actively traded listed options. Its IV Rank reads 8.1%, near the bottom of the 52-week range — premiums are cheap. IV Rank 8% is 19pp below the Utilities sector median of 27%. Cheap premiums tilt toward long-volatility or debit strategies. See Expected Move for strike placement.
This helps you judge whether implied volatility is elevated enough to justify selling options. High IV Rank means premiums are rich compared to the past year.
IV Rank above 50 generally favors premium sellers — you're collecting above-average premium.
IV Rank = (Current IV − 52w Low IV) / (52w High IV − 52w Low IV) × 100ORATS 30-day implied volatility, 52-week IV high/low
ORATS institutional options data, updated daily after market close (~6:00 PM ET)
IV Rank uses a fixed 1-year lookback. Regime changes (e.g., post-COVID vol reset) can distort the range. IV Rank alone does not indicate direction.
Higher IV Rank means relatively richer premiums compared to each stock's own history.
Quantitative screening, not investment advice. Verify with your broker. Disclaimer
Ameren's IV Rank at 8.1% is in the bottom quintile of the past year. Premiums are near their cheapest, which generally makes this a poor time for premium selling — you're collecting very little for the risk taken. Some traders view very low IV Rank as a buying signal (expecting IV expansion), particularly ahead of catalysts. If selling, only the most conservative strategies (like far-OTM credit spreads) make sense, and position sizing should be minimal.
Ameren's IV Rank measures where current implied volatility sits relative to its 252-day range. At 8.1%, it indicates how rich or cheap options premiums are compared to the past year. Premium sellers generally prefer IV Rank above 30–50%, as higher IV means more premium per contract and a greater statistical edge — assuming VRP confirms actual overpricing.
Ameren's IV Rank of 8.1% is lower than most Utilities peers. This suggests either the stock is genuinely calmer than peers, or the market has already compressed IV after a recent catalyst resolution. For premium sellers focused on sector plays, peers with higher IV Rank may offer better absolute returns. Higher-IV alternatives: EVRG (41%), DTE (30%), ETR (27%).
VolRadar's signal prioritizes relative mispricing (RV Ratio) over absolute premium level (IV Rank). A ticker with low IVR but very low RV Ratio may show a Strong signal because options are significantly overpriced relative to actual movement. For richest absolute premiums, check IV Rank (>50%). Not financial advice — quantitative screening tool.
Ameren's IV Rank is 8.1%, meaning current implied volatility is higher than 8% of readings over the past 252 trading days. This low level means premiums are relatively cheap, which is less favorable for selling options.
Ameren's Volatility Risk Premium (VRP) is +3.8pp. Slightly — IV is marginally above realized volatility, providing a small edge for sellers.
Ameren's IV Rank is 8.1% — meaning current IV is higher than 8% of readings over the past year. This is low, meaning premiums are relatively cheap. Most theta gang traders prefer selling when IV Rank is above 30–50%.
Among Utilities peers, Ameren has an IV Rank of 8.1%. EVRG leads the sector at 41% IV Rank versus Ameren's 8%. Both may offer premium selling opportunities depending on other conditions.
Ameren's volatility is calculated using the Yang-Zhang estimator, which incorporates overnight gaps, opening range, and intraday movement — more accurate than simple close-to-close calculations for stocks with significant pre/post-market activity. The RV Ratio (0.79) compares realized volatility (HV 20d) to implied volatility (IV 30d). Below 0.85 means actual movement is well below what options are pricing in — favorable for premium sellers.
Ameren's RV Ratio of 0.79 indicates calming volatility — recent price movement is smaller than the longer-term baseline. When RV is declining but IV hasn't adjusted fully, the gap between them (VRP) widens, benefiting premium sellers. Calming volatility often precedes further IV compression, making current IV levels relatively expensive. This is a favorable environment for selling premium.
Free embeddable tool: IV Rank Gauge — add daily IV Rank to any site. No signup, no API key.
IV 30d (18.2%) − HV 20d (14.4%) = +3.8pp
Why two RV values? ORATS HV uses 20-day close-to-close. Yang-Zhang uses OHLC. VRP computed with ORATS HV. Δ6.5pp.
HV 20d (14.4%) ÷ IV 30d (18.2%). Below 1.0 = options overpriced.
| Window | Value | vs 60d ⓘ |
|---|---|---|
| RV 10d (YZ) | 23.5% | +30.8% |
| RV 20d (YZ) | 20.9% | +16.3% |
| HV 20d (ORATS) VRP | 14.4% | -19.8% |
| RV 60d (YZ) | 18.0% | baseline |