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Check any ticker's IV Rank instantly. See if options are cheap or expensive relative to the past year.
Built for premium sellers who check IV Rank before every trade. The tool answers one question in two seconds: are this stock’s options expensive enough right now to be worth selling? Free, no signup, 5 lookups/day.
Enter a ticker to check its IV Rank
See where current implied volatility sits relative to the past year. Click a ticker above to get started.
IV Rank measures where current implied volatility sits relative to its range over the past 252 trading days (one year). A reading of 72% means current IV is near the top of its annual range — options are relatively expensive compared to recent history. For premium sellers, elevated levels generally mean richer premiums and better entry points; for premium buyers (long calls, long puts, debit spreads), elevated IV is a warning that you’re overpaying for the same exposure.
The metric was popularized by tastytrade in the early 2010s and has become the standard quick-read for whether a stock’s options are “cheap” or “expensive” in plain language. Unlike absolute IV (which varies wildly across stocks — a 30% IV is high for KO but normal for TSLA), IV Rank is normalized to each ticker’s own history, making it directly comparable across the entire market.
The formula is straightforward, which is part of why the metric is so widely used:
VolRadar uses 30-day at-the-money implied volatility from ORATS as the input, sampled at end-of-day. The 252-trading-day window (≈ 1 calendar year) is the industry standard. Tickers with fewer than 252 trading days of history won’t produce a reliable rank — the tool will tell you when that’s the case and offer alternative metrics (realized volatility, expected move) that work with shorter histories.
Full methodology and edge cases are documented at /methodology/iv-rank.
Selling premium here is hard work for little reward. Check VRP — if implied is still above realized, there can be edge even at low IV Rank. Otherwise, wait or buy premium instead (long calls, debit spreads).
Average premium environment. Selective short puts and credit spreads on liquid names work, but don’t expect outsized returns. Stick to high-probability setups.
The classic premium-seller zone. Widen the watchlist, look for high-probability setups, and size positions normally. This is where most short-put and iron-condor backtests show their best Sharpe.
Rich premiums across credit spreads, iron condors, and short puts. Also the zone where IV crush hits hardest after a catalyst — check earnings calendar before entering, and size conservatively because the underlying is also moving.
Premium sellers typically target readings above 50% as a baseline for selling strategies like short puts, credit spreads, and iron condors. When IV Rank is elevated, you collect more premium relative to the risk you take. The trade-off is that high IV usually means the underlying is also moving more — so position size needs to come down even as the premium per contract goes up.
Important caveat: IV Rank alone isn’t a complete signal. A high reading with earnings 3 days away is a trap (IV will collapse on the announcement). A medium reading with positive VRP is often a better trade than a high reading with negative VRP. Combine this metric with VRP (volatility risk premium), earnings timing, and liquidity checks for a complete picture. The full VolRadar Scanner does that combination automatically across 500+ stocks.
IV Rank uses the range (current minus low, divided by high minus low, times 100). IV Percentile counts the percentage of days that had lower IV than today. Both are useful but answer slightly different questions: IV Rank is more sensitive to extreme values (a single huge spike pulls the whole rank down), while IV Percentile gives a better sense of how unusual the current level is statistically. Most tastytrade-style premium sellers use IV Rank as the primary; some quant traders prefer IV Percentile because it’s less affected by outliers.
Most broker platforms show IV Rank somewhere in their option chain UI, but it’s usually buried, ticker-locked to the brokerage you’re logged into, and rarely updated outside of intraday calculations that drift between sessions.
VolRadar’s standalone lookup is built for the “quick check before adding to watchlist” workflow: enter the ticker, get the rank, get a context message that tells you what the rank means for premium sellers right now, see the 90-day chart, then either add to watchlist or move on. No login wall, no page-load delay, no broker dependency.
The other practical difference is methodology transparency: VolRadar publishes the formula, the input source (ORATS 30-day ATM IV), and the lookback window (252 trading days) publicly at /methodology/iv-rank. Most broker tools don’t document any of those details, so you can’t cross-validate when two platforms disagree.
Premium sellers — short puts, credit spreads, iron condors. The fastest way to check whether a name on the watchlist is worth selling premium on today.
Wheel traders — checking IV Rank before opening a cash-secured put. High IV Rank → richer CSP premium → faster wheel cycle. Cross-reference with Best Wheel Stocks.
Earnings traders — checking pre-earnings IV run-up. A name with IV Rank in the 80s a week before earnings is usually overpriced into the event. Watch for IV crush after.
Long-options buyers — but in reverse. High IV Rank means you’re overpaying for that long call or debit spread. Wait for IV to drop or use a different strategy.
Watchlist screeners — quick daily check on 5–20 favorite tickers to find the 1–2 with elevated IV worth a closer look. The related High IV Stocks page does the same screen across the full S&P 500.
Premium sellers typically look for IV Rank above 50%. Higher IV means richer premiums and better entry points for selling strategies like short puts, credit spreads, and iron condors. But IV Rank alone isn’t enough — check VRP and earnings timing too.
IV Rank uses the range (current minus low divided by high minus low, times 100). IV Percentile counts the percentage of days with lower IV than today. IV Rank is more sensitive to extremes, while IV Percentile shows how unusual the current level is statistically.
VolRadar updates IV Rank daily after market close (~6:00 PM ET) using 30-day ATM implied volatility data from ORATS. The page reflects end-of-day values for the most recent completed trading session.
Yes. The IV Rank lookup is free with 5 lookups per day for guests and 15 for free accounts. Starter plan users get unlimited access plus the full Scanner with 500+ tickers, VRP analysis, and strategy ranking.
Different platforms use different IV inputs (constant-30-day vs front-month, ATM vs IV index), different lookback windows (52 weeks vs 252 trading days vs 365 days), and different calculation methods. Small differences are normal. VolRadar uses ORATS 30-day ATM IV with a 252-trading-day lookback — both documented at /methodology/iv-rank.
Yes. The lookup works for stocks, ETFs (SPY, QQQ, IWM, sector ETFs), and most indices that have liquid options markets. For indices, IV Rank is often more meaningful than individual stock IV Rank because index IV is broader-based.
Data sourced from ORATS, updated daily after market close. VolRadar provides educational analytics — not financial advice. Options involve significant risk of loss. Read our investment disclaimer.