Add training workflow, datasets, and runbook
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ler 20: The Sale of a Straddle
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GURE 20-2.
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ked straddle sale.
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307
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Stock Price at Expiration
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the stock at 52. If, however, he is planning to take other action that might involve
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staying with the position if the stock goes to 55 or 56, he should allow enough collat
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eral to be able to finance that action. If the stock never gets that high, he will have
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excess collateral while the position is in place.
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SELECTING A STRADDLE WRITE
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Ideally, one would like to receive a premium for the straddle write that produces a
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profit range that is wide in relation to the volatility of the underlying stock. In the
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example above, the profit range is 38 to 52. This may or may not be extraordinarily
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wide, depending on the volatility of XYZ. This is a somewhat subjective measure
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ment, although one could construct a simple straddle writer's index that ranked strad
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dles based on the following simple formula:
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I d Straddle time value premium n ex= _______ ..._ ___ _
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Stock price x Volatility
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Refinements would have to be made to such a ranking, such as eliminating cases in
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which either the put or the call sells for less than ¼ point ( or even 1 point, if a more
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restrictive requirement is desired) or cases in which the in-the-money time premium
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is small. Furthermore, the index would have to be annualized to be able to compare
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straddles for different expiration months. More advanced selection criteria, in the
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