> ## 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.

# CSR non-sec curvature CVR down

> The CSR non-Sec Curvature CVR Down measure in FRTBCombinedCube, computing the valuation impact of the downward curvature scenario with delta effect removed, per Basel MAR21.5

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

|                 |                                                                                                                                           |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------- |
| **Description** | The valuation impact of the downward scenario for curvature risk factors with delta effect removed                                        |
| **Reference**   | [\[MAR21.5\]](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_5) |
| **Formula**     | $\displaystyle -\sum_{i}\left \{ V_i\left ( x_k^{(RW^{(curvature)-})} \right ) -V_i(x_k)+RW_k^{(curvature)}\cdot s_{ik})\right \}$        |

The measure **CSR non-Sec Curvature CVR Down** can be replicated with these measures: **CSR non-Sec Curvature shock-down prices** plus **CSR non-Sec Curvature Delta Weighted Sensitivities**.