Gamma Scalping Limitations
Gamma scalping is a delta-neutral trading strategy where a trader continuously adjusts their position to capture the gamma of an options portfolio. The goal is to profit from the difference between realized volatility and the implied volatility used to price the option.
However, this strategy has significant limitations in real-world markets. It assumes that the trader can trade frequently and at low cost, which is rarely true when accounting for transaction fees and slippage.
In volatile markets, the speed at which the trader must adjust their delta can lead to significant market impact, essentially working against the strategy's profitability. Furthermore, if the market moves too quickly, the trader may be unable to hedge effectively, resulting in large losses.
The strategy is essentially a bet on the accuracy of the volatility forecast, and it often fails when the market behaves in ways the model did not predict.