What Is Vanna? The Greek That Links Delta and Volatility
Vanna is where volatility and direction meet. It’s a second-order Greek most retail traders never learn, and it quietly drives some of the market’s most powerful rallies.
Vanna measures how an option’s delta changes when implied volatility moves (equivalently, how vega changes when price moves). It’s a second-order Greek — and because dealers must hedge it, it drives real flows in the market.
What vanna captures
Delta isn’t static — it shifts as conditions change. Vanna isolates one driver: volatility. When IV falls, the delta of a dealer’s options book changes, forcing them to re-hedge (buy or sell futures/shares) to stay neutral. That hedging is vanna flow, and it can push price independent of any news — see vanna flows explained.
Why it drives rallies
The classic pattern: markets calm down, IV drifts lower, and in a “short vanna” dealer regime that falling vol forces dealers to buy to stay hedged — a self-reinforcing vanna rally that can lift price with no fundamental catalyst. It’s a big reason markets often grind higher as fear fades (and why a post-event vol crush can spark a bounce).
Vanna is the hidden bridge between fear and price: when volatility drops, vanna hedging can quietly buy the market higher — no news required.
What it means for a scalper
You don’t compute vanna, but knowing it exists explains otherwise-puzzling drift, especially after volatility crushes and around OPEX. It’s part of the higher-order Greek picture that shapes the tape NoVo reads and maps. Related: charm, the time-based cousin of vanna.
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NoVo is a software tool for market analysis, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.
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