Here's your filter:
portfolio:groupID=FIELD:groupID
portfolio:groupID_Mod=ne
Here's your Portfolio Group Name column:
displayname=Folio Group
linkedname=portfolio
namekey=view.relatedcolumn
namekeyargkey.0=portfolio
namekeyargkey.1=group:name
querysort=portfolio:group:name
textmode=true
valuefield=portfolio:group:name
valueformat=HTML
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