I want to make index for the bond market, I read several methodologies and I didn't find a divisor in the equations used for bond index calculation.
As i know from the stock indices that a divisor is used to ensure that (corporate actions/new re balancing for index constituents) do not significantly alter the index.
As I noticed that there is no divisor in bond indices, how do I calculate the bond index in case of the presence of corporate actions? As I need to prevent a change in the value of the index due to these corporate actions.