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

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