A gamma neutral portfolio can be created by taking positions with offsetting deltas. This helps to reduce variations due to changing market prices and conditions. A gamma neutral portfolio is still subject to risk, however. For example, if the assumptions used to establish the portfolio turn out to be incorrect, a position that is supposed to be neutral may turn out to be risky. Furthermore, the position has to be rebalanced as prices change and time passes.
Investment dictionary. Academic. 2012.
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