Utilize the input text as a context reference, choose the right relationship between iShares and BlackRock 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.

BlackRock generated a record $17 billion in sustainable iShares ETFs inflows year-to-date, outpacing the $12 billion from all of 2019 as we innovate and expand innovate and expand innovate and expand access to sustainable investment solutions.

Answer: operator