Bitcoin Spot ETFs Reverse Outflows with $355M Inflow; Ethereum and Solana See Gains

On December 30, institutional money returned to crypto exchange-traded products, with Bitcoin spot ETFs logging a collective net inflow of about $355 million, a sharp reversal after seven consecutive days of outflows. The day’s buying was led by BlackRock’s IBIT, which alone accounted for roughly $144 million of the inflows, according to ETF flow trackers that pull from SoSoValue data.

The surge helped lift the total net asset value of the U.S. Bitcoin spot ETFs to the neighborhood of $114.4 billion and nudged cumulative ETF inflows for the year higher. Ethereum’s newly minted spot ETF market also saw meaningful demand on Tuesday. All nine U.S. spot-ETH funds recorded inflows, with a combined net addition of roughly $67.84 million for the day.

It is a sign that, at least for this trading session, money managers were willing to take fresh exposure to ether without any single fund showing an outflow. The nine-product lineup itself is a relatively recent milestone in the U.S. market and helps explain why flows into ETH products now get so much attention from traders and commentators.

Solana’s spot ETFs posted smaller, but still positive, flows: about $5.21 million in net new money on Dec. 30. While the dollar amounts are modest next to Bitcoin and Ethereum, inflows into Solana products add to a narrative that liquidity is broadening beyond the two largest tokens.

ETFs Drive Demand

Markets reacted calmly to the ETF flows. Bitcoin traded near $88,000 at the close of the year’s penultimate session, having climbed roughly 1.4% on Dec. 30 as the ETF inflows firmed demand. Traders pointed to the ETF activity as one of several tailwinds keeping the largest crypto bid under the price when larger macro stories were relatively quiet.

Ethereum was changing hands around $2,900–$3,000, consistent with modest intraday moves, while Solana was trading in the low $120s. Those price levels reflect a market that, on balance, absorbed the fresh ETF allocations without violent repricing.

Analysts say flows into spot products can be both a cause and a sign of market conviction: inflows give funds more purchasing power for the underlying tokens, and steady buying from large, regulated vehicles can bring hesitant investors back to the space. That dynamic has played out all year as spot crypto ETFs became a major on-ramp for traditional investors.

Still, inflows can ebb and flow quickly; December itself shows mixed behavior across different days and products, and some commentary warns that month-end rebalancing and tax-related positioning can create short-lived spikes in demand. For now, the picture is straightforward.

After a week-long streak of outflows, Dec. 30’s wave of inflows into Bitcoin, Ethereum and Solana spot ETFs offered a reminder that institutional demand remains capable of swinging market tone, even if the amounts vary significantly between the headline-grabbing Bitcoin funds and smaller altcoin products. Investors watching 2026 will want to see whether these are sporadic reversals or the start of a steadier, multi-week bid.