Value at Risk Limitations

Value at Risk, or VaR, is a widely used risk metric that estimates the maximum potential loss a portfolio could suffer over a given timeframe at a certain confidence level. However, its limitations are profound, particularly in cryptocurrency where returns are rarely normally distributed and extreme events are common.

VaR fails to capture the magnitude of losses beyond the specified confidence interval, meaning it is blind to the tail risk that often causes systemic collapses. It also assumes that market liquidity will remain constant, which is rarely true during a crisis when order books evaporate.

Because VaR provides a false sense of security by summarizing risk into a single number, it can encourage excessive leverage, leading to disastrous outcomes when the tail risk is realized. Recognizing these limitations is the first step toward adopting more robust risk management frameworks that account for non-linearities and extreme volatility.