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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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"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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A.E. Samaan

"If you lead me astray, then my wanderings will bring me to my destination."

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A.E. Samaan

"Look ahead, because life is before you, not behind you, or else you stumble!"

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A.E. Samaan

"Aimless life leads to depression."

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A.E. Samaan

"In order to answer the question "Where am I going?" you must possess decisiveness."

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A.E. Samaan

"On one hand, to be able to go from one direction in the sky to study such an object to another direction to study another object, and on the other hand to be able to maintain accurately the position in space."

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A.E. Samaan

"If the goal is unknown, then abuse is inevitable."

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A.E. Samaan

"Painful as it may be, a significant emotional event can be the catalyst for choosing a direction that serves us - and those around us - more effectively. Look for the learning."

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A.E. Samaan

"The knowledge of "Where am I going?" sometimes depends on the faithfulness in little things."

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A.E. Samaan

"We must be focused on the goal that God has revealed to us."

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A.E. Samaan

"Do not pay attention to difficulties and life's troubles, you only need to believe."

Explore more quotes by John Hull

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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
"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."
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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."
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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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John Hull
"There are challenges in terms of the measurement of VAR for what are known as nonlinear derivatives, where things like gamma and vega are important dimensions of the risk."
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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
"I think VAR is a very healthy development within the industry."
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John Hull
"Our starting point then was trying to find a way to incorporate mean reversion into the HoLee model."
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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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