As far as Quote by John Hull
“Briefly speaking, our conclusion is that stochastic volatility does not make a huge difference as far as the pricing is concerned if you get the average volatility right. It makes a big difference as far as hedging is concerned.”
About This Quote
Source Book: Options, Futures, and Other Derivatives, 9th ed., 2017
Stochastic volatility matters little for pricing when average volatility is accurate, but greatly affects hedging effectiveness.
In simple terms: Pricing is stable; hedging is sensitive to volatility fluctuations.
Key Takeaway
Focus on accurate volatility estimates for hedging.
Themes
finance
risk management
derivatives
Mood
analytical
cautious
Type
technical
educational
When to use this quote
- option pricing
- portfolio risk
- risk management
- trading strategies
Key Concepts
stochastic volatility
hedging
pricing models
Questions to Reflect On
- How do you adjust hedges when volatility changes?
- What tools improve volatility forecasting?
A Different Perspective
Hedging errors can still be large if volatility dynamics are mis‑estimated.
![“We regard using [a stock's] volatility as a measure of risk is nuts. Risk to us is 1) the risk of permanent loss of capital, or 2) the risk of inadequate return. Some great businesses have very volatile returns - for example, See's [a candy company owned by Berkshire] usually loses money in two…” quote by Charlie Munger](https://sms4smile.com/quotes/img-quotes/50c/charlie-munger-458_candy_we-regard-using-a-stock-s-volatility-as_1564654.jpg)
