IV Rank 0–100: how current IV compares to the past 25 days. >70 = expensive options, <30 = cheap options.
How current IV compares to its own recent range — above 70 is rich, below 30 is cheap.
Gaps = no live two-sided quote for that strike today, not missing data.
Building history for this strike — grows one real trading day at a time.
For full option chains, Greeks, and strategy builder → MCX Options