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Ratio Backspreads
Issued on September 19 2011 par Ratio Backspread
Ratio Backspreads, another way to benefit from a self financing option strategy.
We saw that Ratio Spreads were strategies using options with different strikes, in order to make a profit from a directional move.
Here is another way to make profits from a self financing strategy : the ratio backspreads.
I - Definition
Ratio backspreads are strategies using options
- on the same underlying asset,
- with the same maturity
- with different strikes
And where 'Out of The Money' options are bought and the others are sold.
II - Examples
Using an asset which is worth $100, maturity is set for 180 days it could be built as :
Using calls,
- selling 10 calls struck at 90 / buying 20 calls struck at 115
- selling 13 calls struck at 85 / buying 30 calls struck at 90
- selling 5 calls struck at 105 / buying 8 calls struck at 120
Using puts,
- Selling 10 puts struck at 120 / buying 22 puts struck at 80
- selling 33 puts struck at 85 / buying 50 puts struck at 75
- selling 25 puts struck at 110 / buying 38 puts struck at 105
III - A Self Financed Strategy
As far as we remain within the "ratio" framework, it's needed to make sure that the strategy is a self financing one.
Amount perceived from sold options have to be much larger that those which have been bought.
IV - Graphs
Call Ratio backspread : Spot = 1.35
- sold 20 calls, strike 1.31, 182 days, Implied volatility 8%
- bought 46 calls, strike 1.39, 182 days, implied volatility 7%

Put Ratio backspreads : Spot = 100
- sold 20 puts, strike 103, 182 days, implied volatility 8%
- bought 57 puts, strike 97, 182 days, implied volatility 7%

Next : Ratio Backspreads - Delta Neutral
Previous : Ratio Spreads
Advanced Strategies - INDEX
Advanced Strategies - CHAPTER I
Advanced Strategies - CHAPTER II
Advanced Strategies - CHAPTER III
Advanced Strategies - CHAPTER IV
Advanced Strategies - CHAPTER V
Ratio Backspread
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