Bitcoin ETFs in the U.S. saw a significant surge in investor interest, pulling in nearly $1.9 billion in early January, reversing a slump from late December. On January 6 alone, the Fidelity Wise Origin Bitcoin Fund led with $370.2 million, followed by BlackRock's iShares and ARK 21Shares with $209 million and $153 million, respectively. Despite some ETFs seeing no inflows, the overall market has accumulated $36.9 billion since launch. Analysts predict increased institutional participation by 2025, fueling bullish Bitcoin price forecasts of up to $200,000.