Analyze the relationship between 'LetterOne' and 'Mikhail Fridman' within the context of the input sentence.
Options: member of, owned by, headquarters location, publisher

Hutchison Chairman Li Ka-shing and Russian billionaire Mikhail Fridman - whose LetterOne fund holds 47.9 percent of Vimpelcom's voting rights - have held on-off talks for years and came close to clinching a deal a few times before scrapping it at the eleventh hour over governance control.
owned by