Add training workflow, datasets, and runbook
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Day One
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This was one of the volatile days. The stock rallied from $40 to $42 early in
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the day and had fallen back down to $40 by the end of the day. Big moves
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like this are hard to trade as a short-gamma trader. As the stock rose to $42,
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the negative delta would have been increasing. That means losses were
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adding up at an increasing rate. The only way to have stopped the
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hemorrhaging of money as the stock continued to rise would have been to
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buy stock. Of course, if Mary buys stock and the stock then declines, she
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has a loser.
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Let’s assume the best-case scenario. When the stock reached $42 and she
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had a −560 delta, Mary correctly felt the market was overbought and would
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retrace. Sometimes, the best trades are the ones you don’t make. On this
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day, Mary traded no stock. When the stock reached $40 a share at the end of
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the day, she was back to being delta neutral. Theta makes her a winner
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today.
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Because of the way Mary handled her trade, the volatility of day one was
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not necessarily an impediment to it being profitable. Again, the assumption
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is that Mary made the right call not to negative scalp the stock. Mary could
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have decided to hedge her negative gamma when the stock reach $42 and
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the position delta was at −$560 by buying stock and then selling it at $40.
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There are a number of techniques for hedging deltas resulting from
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negative gamma. The objective of hedging deltas is to avoid losses from the
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stock trending in one direction and creating increasingly adverse deltas but
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not to overtrade stock and negative scalp.
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