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Straddle : The Delta ∆
Issued on September 13 2010 par Strategies Options

The straddle is a remarkable strategy because it's BiDirectional.
Take a look at the delta ∆ of the straddle to grasp how moves the p&l of such strategy.



I - DELTA ∆

Delta is the rate of change of an option price to an underlying move.
For straddle, one just needs to add both deltas to find out the global one.

A 1 year call and a 1 year put struck at 100 vol=30% rate=5%, if the spot is $100 it leads to:
call ∆ = + 0.6232
put ∆ = - 0.3768
Then,
straddle ∆ = +0.6232 + (-0.3768) = + 0.6232 - 0.3768 = + 0.2464

"The delta of an "At The Money Straddle" (Strike equals underlying asset) is never nil !"



II - GRAPHS

Call delta :
Delta-Long-Call-100-3D

Put delta
Delta-Long-Put-100-3D


Straddle ∆
Delta-Long-Straddle-100-3D





III - CONSEQUENCES

A straddle is less sensible to the spot variation than a single option. It's a bet on volatilities, implied and historical ones.




Next : Straddle : The Gamma Г
Previous : The Straddle

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BASIC OPTIONS STRATEGIES - INDEX
BASIC OPTIONS STRATEGIES - CHAPTER I
BASIC OPTIONS STRATEGIES - CHAPTER II
BASIC OPTIONS STRATEGIES - CHAPTER III
BASIC OPTIONS STRATEGIES - CHAPTER IV

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