Unit 1 · Level 3 · The volatility surface
The surface: what pros actually see
Put skew and term structure together and you get the volatility surface: IV plotted across every strike AND every expiry, a 3D landscape of priced-in fear and greed. Market makers and vol desks don't stare at price charts all day; they stare at this. A bump here, a steepening there. The surface moves like weather, and pros trade the weather.
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What you get asked
The two axes of the volatility surface are…
Everything in this unit was one object all along: slice the surface by strike and you see skew, slice it by time and you see term structure.
Match the surface feature to what it reveals
Each deformation of the surface is a sentence in the market's diary. Pros read the diary before they write their own entry.
Why do pros read the surface BEFORE putting on any options trade?
An option is only a good buy if the market is underpricing what you expect. The surface IS the market's expectation, laid out in full.
The surface can't tell you direction. It prices expected ___, not which way price will go.
Volatility is directionless by definition. A towering surface says 'big moves expected.' Up or down is your problem.
A retail trader checks only the price chart; a pro checks price AND the surface. The pro's edge is…
Two dimensions instead of one: direction AND the price of movement itself. Being right on the stock but overpaying for the option is still a losing trade. 🐜
The rest of this unit
Skew, term structure and IV rank: the 3D map every options pro trades from.