The full line-up consists of Bank of America Merrill Lynch , BNY Mellon , BlackRock , Citadel, Citigroup , Credit Suisse , Deutsche Bank , Goldman Sachs , HSBC, Jefferies , JPMorgan , Maverick Capital, Morgan Stanley , Nomura and Wells Fargo .
Take context from the input text and decide on the accurate relationship between 'Citigroup' and 'BlackRock' from the options provided.
Options: headquarters location, developer, owned by, parent organization