The volatility regime guide

Five regimes, each with its own term structure, its own skew, and its own way of hurting you.

Quick answer: The volatility regime guide describes five market states — complacent, normal, elevated, stressed and crisis — and what changes across them: the slope of the term structure, the steepness of the skew, the relationship between implied and realised volatility, what decays fastest, and where the risk is actually hiding.

Volatility does not move along a continuum so much as jump between states. Each state has its own term structure, its own skew, its own relationship between implied and realised volatility, and its own way of hurting you. This page is a description of the states — not a signal, and emphatically not a set of thresholds at which to do anything.

Complacent

VIX < 11

Options are cheap in absolute terms. Short-volatility positions have been working for months, leverage has crept up across the market, and nobody remembers the last drawdown.

Normal

VIX 11–15

Premium is roughly fair against realised movement. The term structure is in contango. This is where NIFTY spends most of its life.

Elevated

VIX 15–20

Options look expensive and often are not: realised movement is larger too. The front of the term structure begins to flatten.

Stressed

VIX 20–28

Backwardation. Gaps through stops. Margin requirements rise, forcing exits that push volatility higher, which raises margins again.

Crisis

VIX > 28

Liquidity leaves the wings of the chain. Quoted prices for far strikes stop meaning anything. Correlation across every constituent goes to one, and diversification stops working exactly when it is needed.

The five regimes, shaded

An illustrative implied-volatility path crossing every band.

The thresholds are conventions rather than laws, and they are specific to NIFTY. A 20% reading is elevated for an index and unremarkable for a mid-cap stock.

What changes as the regime changes

	Complacent	Normal	Elevated	Stressed	Crisis
Term structure	Steep contango	Contango	Flat	Backwardation	Steep backwardation
Skew	Moderate	Moderate	Steepening	Steep	Extreme; put wing bid at any price
IV vs realised	IV well above RV	IV modestly above RV	IV ≈ RV	IV can fall below RV	IV far below RV
What decays fastest	Long options	Long options	Nothing reliably	Short vega positions	Everything, in both directions
Where the risk hides	Position size	Gamma near expiry	Vega	Liquidity	Correlation and margin
Typical duration	Months	Months	Weeks	Days to weeks	Days

The transitions matter more than the levels

A volatility index at 22 that arrived from 12 last week is a completely different market from one at 22 that has been falling from 35 for a month. The first is a market discovering a problem; the second is a market recovering from one. The level is identical and the correct behaviour is opposite. This is why clustering and mean reversion are the two facts worth internalising: clustering says the current regime will probably persist for a while; mean reversion says it will not persist forever. Neither says when it ends.

Up by the escalator, down by the stairs

The same series, focused on a single crisis episode.

The asymmetry is structural. A crisis is a sudden collapse in the willingness to sell insurance, and that willingness rebuilds far more slowly than it evaporates.

The honest limitation

Regimes are named after the fact. You can always say what regime you were in last month. Nobody can reliably say what regime they are in today, because the defining feature of a regime change is that it has not been confirmed yet. Any rule of the form "sell volatility when the index is below 12" is a rule that works for years and then loses more in one week than it made in all of them. This page exists to help you understand what you are looking at, not to tell you what to do about it.

Frequently asked questions

What are the volatility regimes?

Conventionally five, keyed to India VIX: complacent under 11, normal 11–15, elevated 15–20, stressed 20–28, and crisis above 28. These are descriptions calibrated to NIFTY, not laws, and they do not transfer to single stocks.

What changes when a market moves from calm to stressed?

The term structure flips from contango to backwardation, the skew steepens, implied volatility can fall below realised, margin requirements rise mechanically and force exits, and liquidity begins to leave the wings of the option chain.

Why does a low volatility regime end violently?

Because low volatility is a period in which risk is being accumulated rather than expressed. Position sizes creep up, leverage builds across the market, and the reversal has to unwind all of it at once.

Can I tell which regime I am in today?

No, and that is the central limitation of the whole idea. Regimes are named after the fact. The defining feature of a regime change is that it has not been confirmed yet.

Why does volatility rise faster than it falls?

Because a crisis is a sudden collapse in the willingness to sell insurance, and that willingness rebuilds far more slowly than it evaporates. Volatility goes up by the escalator and down by the stairs.

Is a rule like 'sell volatility when VIX is under 12' useful?

It works for years and then loses more in one week than it made in all of them. The rule is not wrong about the base rate; it is wrong about the distribution of outcomes, which has a tail that arrives all at once.

Last reviewed 10 July 2026. Educational content only — not investment advice.