> ## 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.

# Curvature risk charge

The **[Curvature Risk
Charge](../../../../../../../cube/csr-sec-non-ctp-curvature-risk-charge)**
measure is $\text{Curvature risk}$ in [MAR21.5](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_5)(4).

It is calculated by combining the **Curvature Risk Positions** (and
aggregated **CVR Up** or **CVR Down** values) over all **Buckets**
according to [MAR21.5](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_5)(4) and [MAR21.71](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_71).

See [Interpretation Note](../../interpretation-note) for discussion of different
interpretations of [MAR21.71](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_71).