Add training workflow, datasets, and runbook
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Chapter 40: Advanced Concepts
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Using deltas, the following spread appears to be neutral:
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Buy l January bean 57 5 call at 19 .50
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Sell 6 January bean 675 calls at 2.25
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Net position:
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19.50 DB
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13.50 CR
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6 Debit
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879
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At the time the original example was presented, it was demonstrated through
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the use of the profit picture that the ratio was too steep and problems could result in
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a large rally.
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Now that one has the concept of gamma at his disposal, he can quantify what
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those problems are.
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The position gamma of this spread is quite negative:
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Position gamma = .01 - 6 x .0026 = -0.0056
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That is, for every 10 points that January soybeans rally, the position will become
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short about 1/2 of one futures contract. The maximum profit point, 675, is 92 points
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above the current price of 583. While beans would not normally rally 92 points in
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only a few days, it does demonstrate that this position could become very short if
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beans quickly rallied to the point of maximum profit potential. Rest assured there
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would be no profit if that happened.
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Even a small rally of 20 cents (points) in soybeans - less than the daily limit -
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would begin to make this tiny spread noticeably short. If one had established the
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spread in some quantity, say buying 100 and selling 600, he could become seriously
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short very fast.
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A neutral spreader would not use such a large ratio in this spread. Rather, he
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would neutralize the gamma and then attempt to deal with the resulting delta. The
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next section deals with ways to accomplish that.
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CREATING MULTIFACETED NEUTRALITY
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So what is the strategist to do? He can attempt to construct positions that are neutral
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with respect to the other factors if he perceives them as a risk. There is no reason why
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a position cannot be constructed as veg a neutral rather than delta neutral, if he wants
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to eliminate the risk of volatility increases or decreases. Or, maybe he wants to elim
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inate the risk of stock price movements, in which case he would attempt to be gamma
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neutral as well as delta neutral.
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This seems like a simple concept until one first attempts to establish a position
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that is neutral with respect to more than one risk variable. For example, if one is
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