Value at Risk
Value at Risk is a statistical technique used to measure the amount of potential loss that could happen in an investment portfolio over a specified period. It provides a single number that represents the maximum expected loss with a certain level of confidence, such as 95 percent or 99 percent.
In the domain of cryptocurrency and derivatives, VaR is a standard tool for assessing the risk of insolvency or extreme drawdown. It aggregates the risks from various assets, including leverage and derivative positions.
By using historical data and volatility estimates, VaR helps institutions set margin requirements and capital buffers. However, it is important to note that VaR does not always capture the risk of tail events or extreme market crashes.
It is a foundational metric for risk managers to communicate potential exposure to stakeholders. When combined with stress testing, it offers a more comprehensive view of systemic risk.
It relies heavily on accurate volatility inputs, often derived from models like GARCH. Effective VaR modeling is essential for maintaining protocol stability in decentralized finance.