> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ES (basic)

<Badge color="gray" size="lg">[ima](../tags/ima)</Badge>

|                                      |                                                                                                      |
| ------------------------------------ | ---------------------------------------------------------------------------------------------------- |
| **Description**                      | The measure performs expected shortfall aggregation for a set of return vectors                      |
| **Hierarchies required in the view** | [Risk Classes](./risk-classes), [Data Sets](./data-sets), [Liquidity Horizons](./liquidity-horizons) |

When the **Sliding Window** hierarchy is not present, a vector of Expected Shortfalls is returned which you can expand on [Sliding Window](./sliding-window).