US Bitcoin ETFs Hit $101B AUM After Three-Week $3.8B Buying Streak

US spot Bitcoin ETFs pulled in $986.9 million in net inflows for the week ending September 5, finalizing a three-week surge of $3.8 billion. Thursday drove the bulk of the volume with $731 million in net new capital, marking the largest single-day haul since January 14. Despite the massive three-week run, year-to-date net figures remain at approximately negative $1 billion due to severe outflows earlier in 2026. Total assets under management for the spot ETFs hit $101.3 billion, meaning these funds now control roughly 6% of Bitcoin's fully diluted market cap. Investor interest rotated sharply across assets, with spot Ether ETF inflows dropping 74% week-over-week and XRP products plunging 83%.