U.S. spot Bitcoin ETFs began the first full trading week of 2026 with a powerful capital rotation, absorbing a net inflow of approximately $697 million on Monday, January 5.
Data from multiple sources, including SoSoValue, confirms that this is the largest single-day inflow since October 7, 2025, indicating a decisive return of institutional appetite after a stagnant final quarter.
Bitcoin Breaks Out as ETF Demand Jumps
The demand surge coincided with a sharp move in the underlying asset, with Bitcoin (BTC) pushing past $93,000 and trading as high as $94,745. The move reverses a period of muted flows and net withdrawals seen in late December.
BlackRock’s IBIT led the pack, pulling in $372 million, more than half of the day’s total. Fidelity’s FBTC was a distant second, securing $191 million in new assets. The buying was broad-based, with nine separate Bitcoin ETF products posting positive inflows, including strong demand for funds from Bitwise, Ark, and Invesco.
The rally was not isolated to Bitcoin. Spot Ethereum ETFs also saw a substantial rebound, adding over $168 million in net new assets on the same day. This parallel demand for the top two crypto assets points toward a wider risk-on sentiment across the digital asset class to start the year.
What the Flows Suggest
This is not a random daily fluctuation. The January 5th inflow represents a clear sign of institutional re-risking and new year portfolio rebalancing.
After a period of tax-loss harvesting and general de-risking into the end of 2025, asset managers are now redeploying capital. The fact that BlackRock’s IBIT captured over 50% of the flow reinforces its position as the primary gateway for large, traditional allocators.
The synchronized buying in both Bitcoin and Ethereum ETFs suggests that committee-driven decisions are being made to increase exposure to the entire asset class, not just a flight-to-safety into Bitcoin alone.
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