> ## 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.

# BA index risk weight

<table><tr><th>Description</th><td>The risk weight that reflects the volatility of the credit spread</td></tr><tr><th>Reference</th><td><a href="https://www.bis.org/basel_framework/chapter/MAR/50.htm?inforce=20230101&published=20200708#paragraph_MAR_50_20230101_50_24">\[MAR50.24]</a></td></tr><tr><th>Notation</th><td>$RW_i$</td></tr></table>

The measure requires having hierarchies [\[TradePosition\].\[ReferenceName\]](./tradeposition.referencename) and  [\[TradePosition\].\[Trades\]](./tradeposition.trades) in the view.