Utilize the input text as a context reference, choose the right relationship between 'iShares' and 'BlackRock' from the options.
Options: brand, parent organization, operator, product/material produced

This month, BlackRock BlackRock added 11 new products to its currency-hedged iShares lineup bringing it’s total to 16; WisdomTree now offers 16 products as well and Deutsche Bank Deutsche Bank has 14.
operator