Utilize the input text as a context reference, choose the right relationship between comScore and Rentrak 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.

Upon completion of the merger, comScore shareholders are expected to own approximately 66.5% and Rentrak shareholders are expected to own approximately 33.5% of the combined company on a fully diluted basis.
owner_of