BlackRock's successful launch of the iShares Bitcoin Trust, now holding $86 billion in assets, was significantly influenced by consultations with Michael Saylor in October 2020. During a period when Bitcoin was in a bear market, BlackRock sought Saylor's expertise, which helped shape their Bitcoin strategy and regulatory engagement with the SEC. BlackRock CEO Larry Fink highlighted that Saylor's bullish outlook on Bitcoin's long-term value was instrumental in developing the ETF's design and regulatory approach.