# IV Grid Screener — StockMojo

> IV vs HV scanner across symbols with IV Rank and Percentile

- Live page: https://stockmojo.in/iv-grid
- Content last updated: 2026-04-22
- Platform: StockMojo — free options analytics for Indian markets (NSE F&O)

This is a machine-readable markdown mirror of the live tool page. The live page shows real-time NSE data during market hours (09:15-15:30 IST) and supports 200+ F&O symbols via per-symbol URLs like https://stockmojo.in/iv-grid/banknifty.

## Frequently asked questions

### What is the IV Grid Screener built for?

Scanning the entire NSE F&O universe for volatility opportunities in one screen. Every index and stock shows up as a row with current IV, trailing HV, realized vol, IV Percentile, IV Rank, and the IV-HV spread. Instead of opening 200 individual IV charts, you sort, filter, and find the names worth a closer look in seconds.

### What does IV Percentile actually mean?

It tells you where current IV sits relative to its own one-year history. An IV Percentile of 80 means current IV is higher than 80% of all readings in the past year. Premium sellers like high readings because options are statistically expensive. Premium buyers prefer low readings because they're paying less for the same exposure.

### How is IV Rank different from IV Percentile?

IV Rank uses just the high and low of the past year. If yearly low IV is 12 and yearly high is 36, an IV Rank of 50 means current IV is right at 24. Percentile uses the full distribution; Rank just uses the extremes. Rank moves more dramatically; Percentile is steadier. Most traders use both together.

### Why does the IV-HV spread matter?

It's a fast read on whether options are priced richly relative to actual stock movement. A positive spread (IV above HV) often means traders are pricing in event risk that hasn't shown up in price yet. A negative spread (IV below HV) is rarer and usually means realized volatility has spiked recently while options haven't caught up. Both are tradeable.

### How do premium sellers actually use this screener?

The common workflow is to filter for IV Rank above 50 and IV-HV spread positive, then look only at names with adequate liquidity. That narrows 200 F&O names down to maybe 8-12 candidates per session. From there you check the option chain and pick the cleanest setup. Doing this manually used to take an hour; the grid makes it 5 minutes.

### Does the grid update during market hours?

Yes, IV recomputes continuously from live premiums. HV updates daily. The colour-coded heatmap makes dispersion across the universe instantly visible — hot reds are high-premium names, cool blues are compressed vol. Patterns jump out without scrolling through every row.

## How to use the IV Grid Screener

1. **Open the grid** — Land on the page during market hours and the full F&O universe loads with live IV, HV, RV, IV Percentile, IV Rank, and IV-HV spread per row.
2. **Sort by what you're looking for** — Sort by IV Rank descending if you're hunting premium-selling candidates. Sort ascending if you're buying premium ahead of an event.
3. **Apply your filters** — Filter on IV Rank above 50 plus positive IV-HV spread for short-vol setups. Filter on IV Rank below 25 plus near-term catalyst for long-vol setups.
4. **Scan the heatmap colours** — The colour overlay reveals dispersion at a glance. Stocks in the same sector clustering on hot or cool sides often signal a regime move.
5. **Drill into the candidates** — Click any row to open the IV Chart and option chain for that symbol. Confirm the screener signal with the strike-level data before sizing a position.

## Related tools

- [IV Chart](https://stockmojo.in/iv-chart) — markdown: https://stockmojo.in/iv-chart.md
- [IV vs HV Chart](https://stockmojo.in/iv-hv) — markdown: https://stockmojo.in/iv-hv.md
- [Volatility Skew](https://stockmojo.in/volatility-skew) — markdown: https://stockmojo.in/volatility-skew.md

## Glossary

Terms used: implied-volatility, iv-rank, iv-percentile, realized-volatility. Definitions: https://stockmojo.in/glossary