Value at Risk (VaR) calculation is a statistical method used to estimate the maximum potential loss of a portfolio over a specified time horizon at a given confidence level. For example, a 95% VaR of $1 million indicates a 5% chance that the portfolio will lose more than $1 million over the next day. The calculation relies on historical data or statistical models to simulate potential market movements.
Risk
VaR serves as a fundamental risk metric for financial institutions and sophisticated traders. It provides a single, quantifiable number that summarizes the market risk of a portfolio. While widely used, VaR has limitations, particularly its inability to capture “tail risk” or extreme, low-probability events that exceed the specified confidence level.
Metric
As a risk metric, VaR is used for capital allocation and regulatory compliance. It helps determine the amount of capital required to cover potential losses under normal market conditions. In derivatives trading, VaR calculations are complex due to the non-linear payoffs of options, requiring advanced simulation techniques to accurately model potential losses.
Meaning ⎊ Position sizing strategies calibrate capital exposure against volatility and leverage to ensure portfolio survival within decentralized markets.
