IV Screener: Filter Volatility, Rank, Skew and Liquidity

Raw IV and historical context

Raw IV is a model-implied annualized measure from option prices. It is different from IV rank, which places it within a historical range, and IV percentile, which compares it with eligible past observations. A stock with higher raw IV need not be more unusual relative to its own history.

Choose comparable expiry scope and read liquidity, available IV statistics and any realized-volatility comparison together. Statistics can have their own reference window and data-availability requirements. Missing history is not zero volatility.

Screenshot: controls and readings

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1. Expiry and universe. Compare contracts with similar expiry distance and the selected stock/index scope.
2. Implied volatility. Call IV, put IV and ATM averages are different summaries.
3. Historical context. IV rank and percentile place current IV in its own history rather than ranking expected returns.
4. Liquidity and OI. Check traded activity and open interest before interpreting an extreme reading.

IV screener tool workspace with numbered controls and reading points

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Use the screen and inspect one name

1. Select the universe and expiry setup. Choose snapshot or historical date where available.
2. Set the IV range and sort measure, direction and result limit. Apply or refresh the screen.
3. Enable historical IV statistics when needed and read the stated reference window. Keep the same definition when comparing names.
4. Check call-put skew, IV rank, IV percentile, IV-versus-realized-volatility context and liquidity instead of relying on one high number.
5. Inspect a name in the detail panel, then open IV Historical Analysis to verify its timeline. Use the strike IV chart for the selected expiry’s contracts.

Worked example: high raw IV can be ordinary

A hypothetical stock at IV 40% may be close to its normal range, while another at 25% may be at a historical extreme. Sorting by raw IV places the first higher; sorting by a comparable percentile can reverse their order. Neither ordering independently determines the right option position.

A shortlist is the start of investigation

Events, short expiries, wide spreads, stale LTPs and sparse history can create apparent extremes. IV above realized volatility describes different horizons and assumptions; it is not guaranteed income. Confirm the contract, data time and executable prices before evaluating a modeled strategy.