BlackRock's internal investment portfolio increases IBIT Bitcoin ETF holdings by 25% According to Cointelegraph, a US SEC filing revealed that BlackRock's "Strategic Income Opportunity Portfolio" continues to increase its holdings of its own Bitcoin ETF (IBIT), with a total position of 2.12 million shares (worth $99.4 million) as of March 31, a 25% increase from the end of 2024. This bond type investment portfolio uses Bitcoin ETFs as a diversified allocation tool, reflecting the increasing recognition of cryptocurrency assets by institutions. As the largest Bitcoin ETF in the United States, IBIT currently has an asset management scale of $72 billion, with daily net inflows exceeding $500 million multiple times since May. Bitwise predicts that the total inflow of Bitcoin ETFs may reach $120 billion by 2025, and is expected to exceed $300 billion by 2026.