U.S. Spot Bitcoin ETFs Log Best Three-Week Run of 2026 With $3.8B Inflows

U.S.-listed spot Bitcoin ETFs posted their strongest three-week stretch of 2026, drawing $3.8 billion in net inflows as Bitcoin traded near the $80,000 mark. SoSoValue data shows the group added $986.9 million in the week ending Friday. Total net assets stood at $101.3 billion on Friday after briefly rising to $103.3 billion the prior day. Since launch, cumulative net inflows have reached $55.6 billion. Daily activity cooled into the end of the week. Friday net inflows totaled $174.6 million, well below Thursday's nearly $731 million surge. BlackRock's iShares Bitcoin Trust (IBIT) led Friday's buying with $117.4 million, about 67% of the day's net inflows, according to Farside Investors. Fidelity's Wise Origin Bitcoin Fund (FBTC) was the only other ETF to take in money, adding $57.2 million, while all other spot Bitcoin ETFs were flat on the day. The three-week rebound marks a clear shift from earlier 2026, when the products saw heavy withdrawals. Even with the recent streak, year-to-date net flows remain roughly $1 billion negative, underscoring that the complex has not fully offset earlier outflows. Bitcoin price moves provided additional context. The token slipped from around $81,200 to briefly below $79,000 on Friday. At publication, Bitcoin traded at $79,716, up about 2.6% over the past seven days, based on CoinGecko data. Rotation away from other crypto ETFs was also evident. Versus the prior week, Bitcoin ETF inflows rose about 7%, while flows into U.S. spot Ether and XRP ETFs fell roughly 74% and 83%, respectively, per SoSoValue. Spot Ether ETF inflows dropped to $218.4 million from $824.4 million a week earlier. XRP ETF inflows declined to $19 million from $110.5 million over the same period. Despite the weekly slowdown, both categories remain positive for the year: U.S. spot Ether ETFs have recorded about $863 million in net inflows year-to-date, and XRP ETFs about $515 million. With flows increasingly in focus, investors will watch whether Bitcoin ETF demand can extend beyond this three-week window after Friday's pullback from Thursday's outsized spike. Another key signal is concentration: whether IBIT and FBTC continue to capture the bulk of inflows and whether Ether and XRP ETFs stabilize after their sharp weekly declines.