We concluded that you cannot rely on delta hedging alone. It sounds simplistic to say that now, but back then, this was the sort of thing people were only just beginning to realize.John Hull
Select John Hull Quotations
I guess any simple idea that is really good will catch on quickly.
John Hull
The HoLee model was the first term structure model. I remember reading their paper soon after it was published and as it was fairly different from many of the other papers that I had read, I had to read it quite a few times. I realized that it was a really important paper.
John Hull
In the interest rate area, traders have for a long time used a version of what is known as Black's model for European bond options; another version of the same model for caps and floors; and yet another version of the same model for European swap options.
John Hull
Our tree is actually a tree of the short-term interest rate. The average direction in which the short-term interest rate moves depends on the level of the rate. When the rate is very high, that direction is downward; when the rate is very low, it is upward.
John Hull
One important measurement issue concerns the fat tails problem that I mentioned earlier. VAR is concerned with extreme outcomes. If the tails of the probability distributions we are using are too thin, our VAR measures are likely to be too low.
John Hull
Alan White and I spent the next two or three years working together on this. We developed what is known a stochastic volatility model. This is a model where the volatility as well as the underlying asset price moves around in an unpredictable way.
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.
John Hull
All John Hull Quotations
Words
Alone,
Back,
Beginning,
Cannot,
Concluded,
Delta,
Hedging,
Just,
Now,
Only,
Realize,
Rely,
Say,
Simplistic,
Sort,
Sounds,
Then,
Thing,
Were
Definitions
Alone,
Back,
Beginning,
Cannot,
Concluded,
Delta,
Hedging,
Just,
Now,
Only,
Realize,
Rely,
Say,
Simplistic,
Sort,
Then,
Thing,
Were
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