BlackRock and Fidelity's acquisition of 399,695 Bitcoin, valued at approximately $228.06 billion, for their spot ETFs, has been highlighted as a significant bullish supply shock. This acquisition includes all Bitcoin sold by Grayscale, all newly mined Bitcoin, and an additional 61,758 Bitcoin. Concurrently, BlackRock's spot Bitcoin ETF holdings have surpassed 252,011 BTC, equivalent to around $18 billion. This development has been met with strong retail demand, a sentiment echoed by BlackRock CEO Larry Fink. Additionally, Bitcoin ETFs have seen a turnaround with $859M inflows after previous outflows, and Coinbase Research predicts a surge in demand for spot ETF exposure after April 10. Furthermore, Larry Fink's comments on the future tokenization of financial assets underline a broader shift towards digital assets in the financial sector.