BlackRock's iShares Bitcoin Trust (IBIT) will become the world's largest exchange-traded fund (ETF) in the next decade, according to Michael Saylor, founder of Strategy. IBITs now have a market capitalization of $54 billion and a daily trading volume of more than $1.50 billion. In the past five trading days, net inflows of about $2.80 billion to US spot Bitcoin ETFs, of which IBITs account for $1.30 billion, may be one of the reasons for the rise in Bitcoin prices from about $85,000 to $94,000. In addition, the CME Bitcoin ETF carry trade has an annualized yield of nearly 10%, indicating that the market risk appetite has increased.