The Dependency column does not show any value on the Investment Portal


This is expected behaviour, the Dependency column is a list formatter column which works only in platform list view so, no value will be displayed in the investment portal dependency column as the column does not contain a value specifically. 

As there is no process in place at the moment, you may want to consider posting an enhancement suggestion through the Idea portal on the community boards to ask our development team to consider enabling this feature on a future release.
This is not a guarantee that the feature will be implemented but it is the fastest and easiest way for the suggestion to reach our dev teams.