U.S. spot Bitcoin ETFs see $1.2B in 7 days, longest since 2025

U.S.-listed spot Bitcoin exchange-traded funds (ETFs) recorded $199.4 million of net inflows on Tuesday, extending a seven-day run to roughly $1.2 billion, according to SoSoValue.

The streak from March 9 to March 17, 2026, is the longest since Sept. 29 to Oct. 9, 2025, when the funds took in about $6 billion.

Total assets under management climbed to $96.7 billion on March 17 as Bitcoin briefly broke $75,000. Combined trading volume across the funds totaled $2.6 billion.

Net year-to-date flows for U.S. spot Bitcoin ETFs stay negative. In March, outflows are about $1.8 billion compared with roughly $1.7 billion of inflows, SoSoValue data show.

Across crypto investment products, inflows over the past three weeks reached about $2.7 billion, bringing year-to-date intake to roughly $1.2 billion, based on CoinShares data.

Spot altcoin ETFs saw gains alongside Bitcoin. Ether funds posted $138.3 million in net inflows, the largest since March 4. Solana funds added $17.8 million, also the highest since March 4. XRP funds recorded $4.64 million in net inflows, the first daily gain since March 4 after $56.8 million of outflows from March 5 to March 16, according to SoSoValue.

Despite $33.5 million of outflows so far in March, XRP ETFs remain positive for the year, supported by $73.7 million of inflows in January and February. Solana leads crypto ETFs year to date with $223 million in net inflows. Ether ETFs are negative for 2026, with $364.5 million of outflows year to date after $358.5 million of March inflows and $723 million of outflows in the first two months.