risk-metrics-calculation

Portfolio Risk Indicator Calculation Tool

Skill Overview

A comprehensive investment portfolio risk measurement toolkit that supports the calculation of key risk indicators such as VaR, CVaR, the Sharpe ratio, the Sortino ratio, and drawdown analysis.

Suitable Scenarios

Portfolio Risk Assessment

When you need to quantify the overall risk level of an investment portfolio, use VaR (Value at Risk) and CVaR (Conditional Value at Risk) to evaluate potential losses and tail risk. This helps fund managers understand the expected loss in the worst-case scenario.

Risk Limit Management and Monitoring

Build a real-time risk monitoring system and set acceptable risk thresholds (e.g., maximum VaR limits, maximum drawdown constraints). When risk indicators trigger alerts, promptly adjust positions or take hedging actions.

Risk-Adjusted Performance Analysis

Evaluate the true quality of investment performance using the Sharpe ratio and Sortino ratio. These metrics help distinguish the portion of returns attributable to risk-taking from genuine excess returns, enabling investors to make more informed allocation decisions.

Core Features

VaR and CVaR Calculation

Supports multiple VaR calculation methods, including the parametric method, historical simulation, and Monte Carlo simulation. It also provides CVaR (Expected Shortfall) to measure the average loss when losses exceed the VaR threshold, more accurately reflecting tail risk under extreme market conditions.

Drawdown Analysis

Calculates metrics such as maximum drawdown, average drawdown, and drawdown duration. It identifies the periods when a strategy performs worst, helping evaluate its risk resilience and optimize stop-loss rules.

Risk-Adjusted Return Indicators

Automatically computes the Sharpe ratio (return/volatility) and the Sortino ratio (return/downside volatility). By distinguishing between upside and downside volatility, it more precisely evaluates risk-adjusted investment performance.

Frequently Asked Questions

What is the difference between VaR and CVaR?

VaR (Value at Risk) represents the maximum loss a portfolio may suffer over a specific time horizon at a given confidence level. For example, 95% VaR of 1 million means there is a 5% probability that losses will exceed 1 million. CVaR (Conditional Value at Risk, also known as Expected Shortfall) calculates the average loss when losses exceed VaR, better capturing tail risk under extreme conditions. As a result, it is increasingly adopted by regulatory bodies.

What Sharpe ratio is considered good?

The Sharpe ratio measures excess return earned per unit of volatility. Generally: Sharpe < 1 indicates poor performance; 1–2 is acceptable; > 2 is good; > 3 is excellent. However, interpretation should consider the type of investment strategy (lower-risk strategies naturally tend to have lower ratios) and prevailing market conditions. For strategies that focus more on downside risk, the Sortino ratio may be a better choice.

Is this skill suitable for individual investors?

Yes. It can be used by both institutional fund managers and individual investors. Individual investors can use it to assess their portfolio’s risk exposure, understand the potential maximum loss of their holdings, and adjust asset allocation accordingly. However, correctly interpreting risk indicators requires some financial knowledge, so it is recommended to use it alongside real investment scenarios and your risk tolerance.