Sigh, no it was not. Blackrock is a firm that focuses on low cost, passive investments primarily for 401ks and IRAs. It manages over $10 Trillion, overwhelming majority are retail investors retirement accounts, largely invested in public market equities that trade on the NYSE or Nasdaq. Blackstone is and has always been large private equity investments for the super wealthy and has traditionally invested in real estate and owns primarily private companies and investments and do not trade in the open market.
Did take the 5 seconds to look it up, LOL. Yeah it looks like the division from Blackstone which become Blackrock wasn’t similar to JPMorgan spinning out Morgan Stanley. Have a nice day.