Why "is volatility high or low" is the wrong first question
Implied volatility (IV) is a single number, but it only means something relative to something else. A 30% implied volatility reading is unremarkable for one underlying and unusually elevated for another. Before judging any single figure, gather the comparison points that give it context — that is the actual work of analyzing volatility, and it takes four repeatable steps.
Step 1: Record the option and its exact context
Write down the underlying, the strike, the expiration date, the option type, and the quoted implied volatility. This sounds obvious, but IV is not comparable across mismatched contracts — a 30-day IV and a 90-day IV on the same underlying can legitimately differ without either being "wrong," because they are pricing different amounts of time and different event risk (like an earnings date that falls inside one window and not the other).
Step 2: Compare IV across strikes at the same expiration
Hold the expiration fixed and look at how implied volatility changes as you move from lower to higher strikes. In most equity and index markets, out-of-the-money puts carry higher implied volatility than at-the-money options, which in turn are often higher than out-of-the-money calls. This downward slope from low strikes to high strikes is called skew, and it exists because demand for downside protection tends to exceed demand for pure upside speculation — a structural, persistent pattern rather than a signal that changes daily.
What a skew comparison looks like
| Strike (illustrative) | Moneyness | Relative IV |
|---|---|---|
| Lower strike put | Out-of-the-money | Higher |
| At-the-money strike | At-the-money | Baseline |
| Higher strike call | Out-of-the-money | Lower |
These figures are illustrative, not live market data — the actual numbers for any real underlying must come from your own quote source. The point of the exercise is the shape, not the specific values: a pronounced downward slope tells you the market is pricing more tail risk to the downside than the upside for that expiration.
Step 3: Compare IV across expirations at the same strike
Now hold the strike fixed and compare IV across different expirations — this is the term structure. A flat term structure suggests the market expects similar uncertainty regardless of how far out you look. A term structure that spikes around one specific date (and then drops for expirations just beyond it) usually signals a known event — earnings, an economic release, a court ruling — priced into that specific window and nowhere else.
Step 4: Connect volatility to payoff and position sizing
Once you understand the skew and term structure around your trade, translate that into position terms: elevated IV means richer option premiums, which raises the cost of buying options (long straddles, long strangles, long calls, long puts) and raises the credit available for selling them (short strangles, short straddles, credit spreads). Neither side is automatically "better" — a rich premium is expensive to buy and attractive to sell, but selling it also means underwriting the same elevated uncertainty the market is pricing in.
This is the step where volatility analysis should feed directly into an options payoff graph: use the current IV environment to choose a defensible strike and premium, then model the actual expiration outcome before sizing the trade.
A quick checklist for each new position
- Are you comparing IV within the same expiration (skew) or across expirations at the same strike (term structure)? Mixing the two produces a meaningless comparison.
- Is there a known event — earnings, economic data, litigation — inside the expiration window that would explain an IV spike on its own?
- Does the premium you are paying or receiving still make sense once you plot the actual expiration payoff, not just the IV reading in isolation?
- Have you sized the position based on the defined maximum loss, not the premium alone?
What this workflow does not cover
This is an analytical framework for reasoning about volatility, not a live data feed. OptCurve does not stream implied volatility, compute an IV surface, or back out IV from a market option price — it focuses on modeling expiration payoff from the strikes and premiums you provide. Use this workflow alongside a real quote source, and see our volatility analyzer guide for more on how curves and smiles are typically visualized.
Frequently asked questions
What is the difference between volatility skew and term structure?
Skew compares implied volatility across different strikes at the same expiration. Term structure compares implied volatility across different expirations at the same strike. They answer different questions and should not be mixed in the same comparison.
Why do out-of-the-money puts usually have higher implied volatility than calls?
Demand for downside protection typically exceeds demand for pure upside speculation, which tends to push put-side implied volatility higher than call-side implied volatility at equivalent distances from the money.
Can I calculate implied volatility with OptCurve?
No. OptCurve models expiration profit and loss from strikes, premiums, and position sizes you provide. It does not compute implied volatility from a market price or stream live volatility data.
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