Utilize the input text as a context reference, choose the right relationship between Berkshire Hathaway and IBM from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

One stock in this camp is International Business Machines (symbol IBM , $148.14), a favorite of Warren Buffett, who owns shares through his holding company Berkshire Hathaway ( BRK.B $131.47).

Answer: owner_of