part ownership
noun[U]
PROPERTY,FINANCEukus(alsopartial ownership)asituationin which differentpeople,groups, etc. each ownpartof something:
part ownership in sthThecompanyhaspartownershipin severalshoppingmallsin theregion.
part ownership of sthWe arehopingtoacquirepartownershipof a UKbeerproducer.