What is the relationship between 'Glencore' and 'Ivan Glasenberg' in the context of the input sentence.
Options: member of, subsidiary, owned by, stock exchange

Billionaire fortune all in where you count The good news is that despite losing around half a billion US dollars in a day, Glencore boss "Aussie" Ivan Glasenberg is still a billionaire in the currencies of all the various countries that claim him as a citizen.
owned by