BlackRock has launched the iSHARES Bitcoin Trust ETF on Brazil's major stock exchange with an initial management fee of 0.25%. The fund's fee will decrease to 0.12% once it reaches $5 billion in assets under management. The ETF has accumulated $10 billion in just seven weeks, surpassing the largest silver ETF in asset management size. BlackRock and Fidelity Investments have captured 79% of total inflows into new spot Bitcoin ETFs, with Bitcoin ETFs collectively managing over 300,000 Bitcoin valued at over $17 billion. The surge in Bitcoin ETFs has led to a significant increase in exchange activity and trading volumes, with Bitcoin up 40% since the ETFs went live.