Bitcoin ETF Inflows Hit $3.8B in Strongest 3-Week Stretch of 2026

US spot Bitcoin exchange-traded funds pulled in $986.9 million during the week ending Friday, extending their strongest three-week inflow stretch of 2026 with cumulative net inflows reaching $3.8 billion, according to SoSoValue data. Total net assets across the funds stood at $101.3 billion on Friday after briefly touching $103.3 billion a day earlier, while cumulative net inflows since launch hit $55.6 billion. Despite the recent momentum, year-to-date net flows remain roughly $1 billion negative, marking a sharp reversal from heavy outflows seen earlier in the year.

Friday's daily inflows totaled $174.6 million, a notable cooldown from the nearly $731 million recorded Thursday. BlackRock's iShares Bitcoin Trust (IBIT) dominated activity, attracting $117.4 million, or roughly 67% of the day's total net inflows, according to Farside Investors. Fidelity's Wise Origin Bitcoin Fund (FBTC) was the only other fund to post positive flows, drawing $57.2 million, while all remaining US spot Bitcoin ETFs recorded zero net flows. The slowdown coincided with Bitcoin briefly dipping below $79,000 on Friday after trading near $81,200, though the asset recovered to $79,716 at publication time, up approximately 2.6% over the past seven days, per CoinGecko.

While Bitcoin ETFs gained ground, competing products saw demand evaporate. Spot Ether ETF inflows fell roughly 74% week-over-week to $218.4 million from $824.4 million, while XRP ETF inflows plunged about 83% to $19 million from $110.5 million, according to SoSoValue. Even with the weaker week, both Ether and XRP ETFs remain in positive territory year-to-date, with approximately $863 million and $515 million in net inflows respectively. The divergence suggests institutional capital is consolidating around Bitcoin exposure at the expense of altcoin ETF products heading into late 2026.