PortfoliosLab logo

Expected Shortfall

Expected Shortfall is a risk measure that shows the amount of loss if the loss exceeds VaR. Expected Shortfall is known by other names, such as tail VaR, CVaR, and tail loss.

Expected Shortfall tells how bad portfolio losses will be if the losses exceed Value at Risk.

What do Expected Shortfall results mean

For example, you choose to calculate Expected Shortfall for a portfolio with a 1% confidence level and get $44,334 as a result.The result means that there is a 1% chance our losses exceed VaR.And when it does, we expect that, on average, we will lose $44,334.

Expected Shortfall Formula

Expected Shortfall Formula
Significance level of ES

 — Significance level of ES

Portfolio average return

 — Portfolio average return

Standard deviation of portfolio returns

 — Standard deviation of portfolio returns

Z-score based on the ES significance level

 — Z-score based on the ES significance level

Gaussian density function

 — Gaussian density function



Expected Shortfall Settings

Historical ES



Rolling Expected Shortfall Chart

Click Calculate to get results