Long calls & puts
How does volatility expansion benefit a long option holder even if the underlying asset remains flat?
By Easy Money Scanner · Educational reference · Not investment advice
The short answer
An increase in implied volatility raises an option's extrinsic value even without underlying price movement, because it reflects a higher expected range of future prices embedded in the Black-Scholes-type pricing models used for listed options.
How it works
Vega measures this sensitivity; a long call or put with positive vega gains value as IV rises, which can offset some theta decay if the volatility increase happens before expiration.
An example
A long straddle purchased before an earnings announcement can gain value purely from rising IV in the days leading up to the event, independent of stock price direction.
Risk & limitations
OCC disclosures note IV can also collapse sharply after anticipated events, known as volatility crush, erasing these gains even if the stock has not moved.
Examples are hypothetical, not trade recommendations. US contract and regulatory references do not automatically apply in Canada. Rules, margin requirements and broker policies can change; confirm them with the relevant authority and your broker.