According to documents submitted to the U.S. Securities and Exchange Commission, BlackRock Strategic Income Opportunities Portfolio, a fund under BlackRock, increased its holdings of Bitcoin through IBIT, worth about $3.56 million. Bloomberg ETF analyst Eric Balchunas responded to this on the X platform, saying that this is interesting. Rick Rieder manages this fund. He is BlackRock's chief investment officer and co-head of the global fixed income department.