Add training workflow, datasets, and runbook
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sinking feeling in the pit of your stomach. But the damage was truly not that
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bad. The offer in the straddle was 4.75, so the position was still a winner if
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John bought it back at this point.
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Gamma/delta hurt. Theta helped. A characteristic that enters into this
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trade is volatility’s changing as a result of movement in the stock price.
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Despite the fact that the stock gapped $3.50 higher, implied volatility fell by
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1 percent, to 22. This volatility reaction to the underlying’s rise in price is
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very common in many equity and index options. John decided to close the
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trade. Nobody ever went broke taking a profit.
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The trade in this example was profitable. Of course, this will not always
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be the case. Sometimes short straddles will be losers—sometimes big ones.
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Big moves and rising implied volatility can be perilous to short straddles
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and their writers. If the XYZ stock in the previous example had gapped up
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to $115—which is not an unreasonable possibility—John’s trade would
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have been ugly.
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