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Option Theta θ : a first attempt
Issued on December 02 2011 par Strategies Options
Theta measures the sensitivity of the value of an option to the passage of time.
It's easy to grasp that the more the maturity, the higher the option value. Time has a cost, for every cash account the same way as for every derivatives, like options.
I - Definition
As far as time is passing, time cost vanishes. It's called time decay.
II - Simple Expression
Theta = [ portfolio value(tomorrow) ] - [ portfolio value(today) ]
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OPTIONS 101 - INDEX
OPTIONS 101 - CHAPTER I
OPTIONS 101 - CHAPTER II
OPTIONS 101 - CHAPTER III
OPTIONS 101 - CHAPTER IV
OPTIONS 101 - CHAPTER V
OPTIONS 101 - CHAPTER VI
Strategies Options
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