Gamma Risk
Gamma risk refers to the potential for significant losses or portfolio instability arising from the acceleration of an option's delta as the underlying asset price moves. When a trader is short gamma, they are essentially selling convexity, meaning they must buy the underlying asset as it rises and sell it as it falls to remain delta neutral.
This forced buying and selling in the direction of the market can lead to severe losses during rapid price movements, a phenomenon known as being whipsawed. In crypto markets, where price gaps are common, gamma risk can be catastrophic if the hedge cannot be adjusted fast enough.
Effective management of gamma risk requires understanding the distribution of underlying price movements and the limitations of hedging during high-volatility events.