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John Hull

"If each of your time steps is one week long, you are not modeling the stock price terribly well over a one-week time period, because you are saying that there are only two possible outcomes."

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"If each of your time steps is one week long, you are not modeling the stock price terribly well over a one-week time period, because you are saying that there are only two possible outcomes."

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Asa Don Brown

"Life is a bubble in the ocean of time. At the same time, it can hold all the water of the ocean in her heart."

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Asa Don Brown

"Eternity is a mere moment, just long enough for a joke."

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Asa Don Brown

"The value of time is immeasurable."

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Asa Don Brown

"Sometimes I feel like if you just watch things, just sit still and let the world exist in front of you - sometimes I swear that just for a second time freezes and the world pauses in its tilt. Just for a second. And if you somehow found a way to live in that second, then you would live forever."

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Asa Don Brown

"Worrying about what happened on Monday, or, what might happen on Wednesday, is at the expense of one's Tuesday."

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Asa Don Brown

"No time for better words, no time to unsay anything.-Til We Have Faces."

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Asa Don Brown

"Don't equate effective living to being busy."

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Asa Don Brown

"People wish to learn to swim and at the same time to keep one foot on the ground."

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Asa Don Brown

"Today is a gift. Today is all I have. I be fully awake in today."

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Asa Don Brown

"Time passes..and a billion lives are affected in ways we'll never know."

Explore more quotes by John Hull

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John Hull
"The problem with interest rates are that you are not modeling a single number, you are modeling a whole term structure, so it is a sort of different type of problem."
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John Hull
"The real challenge was to model all the interest rates simultaneously, so you could value something that depended not only on the three-month interest rate, but on other interest rates as well."
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John Hull
"Yes, our tree has an interesting shape. The center branches reflect the shape of the zero curve. When extreme parts of the tree are reached the branching pattern changes to accommodate the mean reversion."
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John Hull
"I guess any simple idea that is really good will catch on quickly."
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John Hull
"I think VAR is a very healthy development within the industry."
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John Hull
"Our research led on to other things, such as the fact that exchange rates are not lognormally distributed."
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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."
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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."
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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."
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John Hull
"We started giving presentations at practitioner conferences in 1986, and since then all of our derivatives research has been stimulated by contact with practitioners."
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