- The VIX with a reading in words — calm, ordinary or stressed — rather than a number you are left to interpret.
- A card you can put on your own dashboard, beside the indices and whatever else you check first.
- In the market pulse too, so volatility is part of the day's summary rather than a separate errand.
What is the VIX?
The VIX is Cboe's Volatility Index. It estimates how much the options market expects the S&P 500 to move over the next 30 days, expressed as an annualised percentage.
The important part of that sentence is where the number comes from. The VIX is not a survey and not an opinion: it is derived from the prices of S&P 500 options. People buying protection against a fall, and people selling it, are agreeing on prices; those prices imply how large a move is being priced in, and the index reads that implication back out. It is a measurement of behaviour, not of sentiment — which is precisely why the "fear index" nickname is both useful and misleading.
Implied, not historical
There are two kinds of volatility and confusing them is the second most common mistake about this number.
Historical volatility measures how much a price has actually moved. It is arithmetic on the past and it is not in dispute. Implied volatility is how much the market is currently paying to be protected against future movement. It is a statement about expectations, and it can be wrong — frequently is, and in a consistent direction: implied volatility has historically tended to run a little above what subsequently happens, because protection carries a premium in the way insurance does.
The VIX is the second kind. It tells you what is being priced, which is a fact about the present, not a fact about the future.
What is a high VIX?
The usual conventions, with the caveat that they are conventions and not thresholds — what counts as high depends entirely on the period you are comparing against.
| Roughly | Usually described as | What it is saying |
|---|---|---|
| Below 12 | Very calm | Small moves priced in; protection is cheap |
| 12–20 | Ordinary | The market's normal state, most of the time |
| 20–30 | Elevated | Something is being priced in; larger moves expected |
| Above 30 | Stressed | Large moves priced in; protection is expensive |
Because the figure is annualised, there is a rough translation worth knowing: a VIX of 20 corresponds to a daily move of a bit over one per cent being priced as ordinary. That is the sense in which the index is "how big is a normal day expected to be" rather than "how frightened is everybody".
Why it rises when the market falls
The VIX is direction-neutral by construction. It measures the expected size of moves, not which way. And yet it reliably rises when markets fall, which looks like a contradiction and is not.
Two reasons, both about behaviour rather than mathematics. Falls are faster than rises — markets tend to decline in a few violent sessions and recover over many quiet ones — so larger moves genuinely are more likely during a decline. And demand for protection spikes exactly when people are worried, which raises option prices, which raises implied volatility. The number goes up because protection got expensive, not because a formula detected fear.
This is why a high VIX is not a forecast of a fall. It is a description of what is currently being paid for. A reading of 35 tells you the market is bracing; it does not tell you the market is right, and historically the highest readings have tended to cluster near the end of a decline rather than the beginning — which is the opposite of how the nickname invites you to read it.
We show the VIX with a word beside it — calm, ordinary, stressed — and that is the whole feature. A bare "14.25" is a number most people cannot place without knowing the range, and a number you cannot place is one you skip.
The line we were careful not to cross: the card describes, it does not advise. There is an obvious temptation to turn a volatility reading into a suggestion, and every version of that sentence we tried was either useless or was investment advice from a company that is not licensed to give it. So it says what the level is and what that level usually means, and stops. The same rule governs our market-mood dial, which is our own reading of four measures rather than a published index — and says so on the card.
How to use it
As context, before you read anything else. A five per cent fall on a day the VIX is at 12 and a five per cent fall on a day it is at 38 are different events: the first is a surprise, the second is roughly what was being priced in. Knowing which one you are looking at changes how much weight the move deserves.
It also usefully calibrates your own reaction. If the market is behaving within what was already expected, a day that feels dramatic may be entirely ordinary — and the VIX is the cheapest available check on that, because it was set by people putting money behind the estimate before the day began.
Alongside it, the heatmap shows whether a move was broad or concentrated, and sector performance shows whether it was the market or a rotation inside it.
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SigniBull is not a broker and the trading is simulated — you are practising and comparing ideas, not moving real money. Market data comes from outside providers and can be delayed or incomplete. Not investment advice.