(Bloomberg) -- Robinhood Markets Inc. is a “prime candidate” to enter the S&P 500 Index in the rebalancing set to be announced Friday, a milestone that would spur passive funds to snap up shares of the online brokerage, according to Bank of America Corp. Most Read from BloombergICE Moves to DNA-Test Families Targeted for Deportation with New ContractThe Global Struggle to Build Safer CarsAt London’s New Design Museum, Visitors Get Hands-On AccessNYC Residents Want Safer Streets, Cheaper Housing,