Vega Risk
Vega risk is the exposure of an options portfolio to changes in implied volatility. Since option prices are heavily influenced by the market's expectation of future volatility, any shift in this expectation will impact the value of the position.
Vega measures this sensitivity, indicating how much the option price will change for a one-percentage-point move in implied volatility. A portfolio with high positive vega will benefit from an increase in market uncertainty, while a portfolio with negative vega will suffer.
Vega risk is particularly important in crypto markets, where implied volatility can be extremely high and prone to sudden spikes. Managing vega requires traders to balance their long and short volatility positions or to use other derivatives like variance swaps to hedge against volatility swings.
It is a critical component of risk management for any professional options desk.