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IV Percentile Screener
Scan 500+ stocks by implied volatility rank and IV percentile. See which tickers are at historically high or low IV levels — and what options context each reading may correspond to. All data free. No account required.
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Research and educational purposes only. Not investment advice.
IV Rank vs. IV Percentile — What They Mean
IV Rank (IVR) places today's implied volatility within the high–low range of the stored history for that security. A reading of 80 means current IV is 80% of the way from that low to that high. Because IVR is range-based, a single spike — like an earnings event — can compress every future reading for months, even if IV is objectively high.
IV Percentile (IVP) counts the percentage of stored sessions when IV was below today's level. If IVP is 85, options premium is more expensive than on 85% of the sessions recorded for that security. This metric is more resistant to one-off outliers and gives a cleaner read on how common the current premium environment is historically.
The window is the full stored history, not the last 52 weeks. Measured on the 702 securities this screener served on 2026-09-04: the median security carries 138 stored sessions and the deepest carries 1,687, the average history spans about 3,870 days, 701 of the 702 span more than a year, and the earliest observation in the table dates to January 2008. Both columns are computed over that whole span, so a reading is relative to a security's own recorded past rather than to a fixed one-year window.
The two columns routinely disagree, and the gap is structural. On those same 702 securities the mean absolute gap between IVR and IVP is 22.5 points and the median is 17.3; 326 (46%) sit at least 20 points apart and 155 (22%) at least 40. IVP is the higher of the two on 621 of the 702 (89%), because IV is right-skewed — most sessions sit in the lower part of a security's own range, so counting sessions places the current reading above more of them than the range position does. The bands below are IVR bands: IVR is above 65 on 2 of the 702 while IVP is above 65 on 119, and 63 securities (9%) read below 25 on IVR and above 65 on IVP at the same time. A cutoff belongs to the statistic it was calibrated on. Full working: IV rank vs. IV percentile.
When premium is elevated (IVR > 65): Options prices are historically expensive. Strategies that involve collecting premium — covered calls and cash-secured puts — may offer more favorable entry contexts, because you are receiving more premium per dollar of risk. The trade-off is that elevated IV often precedes large moves. When premium is compressed (IVR < 25): Buying options outright costs less relative to historical norms, which may correspond to long options contexts. Neither condition is a recommendation — use the full stock analysis for context.
Frequently Asked Questions
What is IV percentile for stocks?
IV percentile measures the percentage of recorded sessions when a stock's implied volatility was lower than its current level. A reading of 80 means IV is higher than 80% of the daily observations Equity Rank has stored for that stock. The window is the full stored history rather than a fixed year: across the 702 securities this screener served on 2026-09-04 it averages about 3,870 days, with the earliest observation dating to January 2008. A high reading indicates elevated premium levels relative to that history.
What is the difference between IV rank and IV percentile?
IV rank compares current IV to the high and low of a stock's stored history using a range formula: (current IV − low) / (high − low) × 100. IV percentile counts how many recorded sessions had IV below the current reading. Both are expressed 0–100 and both use the same window, but IV percentile is less sensitive to outlier spikes because it counts sessions rather than comparing to a single extreme. They are not interchangeable: on the 702 securities this screener served on 2026-09-04 the two readings differ by a mean 22.5 points.
When should I consider selling premium based on IV rank?
Covered calls and cash-secured puts may be worth considering when IV rank is above 65, as options prices are historically elevated. When IV rank is below 25, premium is relatively low, which may correspond to conditions where long options strategies cost less. This screener surfaces that context — it is research information, not a trading recommendation.
Why do IV rank and IV percentile disagree on this screener?
Because they consult different amounts of the same history. IV rank reads two observations — the stored high and low — while IV percentile reads every session. Implied volatility is right-skewed, so most sessions sit in the lower part of a security's own range and counting sessions places the current reading above more of them than the range position does. Measured on the 702 securities this screener served on 2026-09-04: the mean absolute gap is 22.5 points and the median 17.3, 326 (46%) are at least 20 points apart, 155 (22%) at least 40, and IV percentile is the higher reading on 621 of 702 (89%). The consequence at a cutoff is large — IV rank is above 65 on 2 of the 702 while IV percentile is above 65 on 119, and 63 securities read below 25 on rank and above 65 on percentile at the same time. A cutoff belongs to the statistic it was calibrated on; the bands used on this page are IV rank bands.
Educational Use Only — Not Financial Advice
All content, analysis, valuations, options strategies, AI-generated commentary, screener results, and other information provided by Equity Rank is for informational and educational purposes only. Nothing on this platform constitutes financial advice, investment advice, trading advice, or any other type of advice. Equity Rank is not a registered investment adviser, broker-dealer, or financial planner under any applicable law or regulation.
Valuation models, margin of safety percentages, fair value estimates, options strategy outputs, and AI analysis are algorithmic outputs based on publicly available data and do not represent personalized investment recommendations. All financial models contain assumptions that may be incorrect. Past performance of any security is not indicative of future results. You may lose money on any investment.
Every fair value figure on Equity Rank is our model’s opinion of a company’s intrinsic worth under stated assumptions — it is not a prediction, forecast, or price target for where the security will actually trade. Fair value estimates describe what the model considers a business to be worth today, not where its market price is headed. Actual market prices are set by supply and demand and by factors no model can fully capture, and may differ materially and indefinitely from any fair value shown here.
Always conduct your own independent due diligence. Consult a licensed financial advisor, tax professional, or attorney before making any investment or financial decision. By using Equity Rank, you acknowledge that you understand and accept these limitations. Portfolio model outputs are mathematical results of quantitative algorithms and do not represent investment recommendations.
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