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that is a decision to pursue a positive feedback trading strategy.
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That is a decision that the more the position moves in your favor,
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the more your option is in-the-money,
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and the larger is your exposure to the underlying stock
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or the underlying currency.
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Anyone who chooses to use options as a trading vehicle
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is choosing an approach
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in which they are going to increase the magnitude of their position
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as the price rises or decrease the magnitude of their position
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as the price falls again,
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exactly the opposite of the natural, stabilizing response.
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A final source of this kind of positive feedback