> ## 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.

# Delta/Vega/Curvature risk weight

The
**[Delta](../../../../../../../cube/fx-delta-risk-weight)/[Vega](../../../../../../../cube/fx-vega-risk-weight)/[Curvature](../../../../../../../cube/fx-curvature-risk-weight) Risk Weight**
measures are $RW_k$ in [MAR21.4](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_4)(3) and
$RW_k^{(Curvature)}$ in [MAR21.5](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_5)(2)(e).

For Delta and Curvature, following [MAR21.87](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_87), the risk weights are
looked up from the configuration. For specified currency pairs (and
first-order crosses), where the right-hand side of the pair is the base
or reporting currency, the risk weight may be divided by the square root
of 2 (as per [MAR21.88](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_88)).

For Vega, following [MAR21.92](https://www.bis.org/basel_framework/chapter/MAR/21.htm?inforce=20230101\&published=20200327#paragraph_MAR_21_20230101_21_92), the value is looked up based on
the configuration for the **Risk Class** (and its liquidity horizon).