US spot Bitcoin ETFs have recorded a nine-day streak of positive inflows, attracting approximately $3 billion in capital. This period, beginning September 17, marks a significant reversal from previous outflows and has shifted year-to-date net flows into positive territory.
Inflow Surge Details
The week ending September 25 saw substantial inflows, with approximately $2.4 billion entering the ETFs. The strongest single day during this period was September 21, which recorded nearly $999 million in inflows. This sustained buying activity has brought the total assets under management across US spot Bitcoin ETFs to nearly $108 billion by late September.
Among the leading performers during this inflow streak were BlackRock’s iShares Bitcoin Trust (IBIT), Fidelity’s FBTC, and ARK 21Shares’ ARKB. For the week ending September 25, IBIT attracted approximately $1.2 billion, FBTC saw around $702 million, and ARKB garnered roughly $295 million. Together, these three ETFs accounted for over 90% of the capital inflows during that week.
Context of Reversal
This recent surge in inflows contrasts with earlier periods where the ETFs experienced significant capital outflows. At the midpoint of the year, the category was approximately $5.8 billion underwater. By the end of the reported streak, cumulative net flows for US spot Bitcoin ETFs had turned positive, reaching approximately $934 million. Since their launch in January 2024, these ETFs have accumulated over $57 billion in net inflows.
Market and Investor Behavior
During the nine-day inflow streak, the spot price of Bitcoin generally stabilized within the range of $83,000 to $87,000 USD. This price range is notably lower than Bitcoin’s peak near $126,000 in October 2025, a drawdown of approximately 34%.
The performance of IBIT and FBTC simultaneously attracting capital suggests broad-based institutional demand, rather than a single large investor making a directional bet. The inclusion of ARKB indicates that growth-oriented investment strategies are also contributing to the inflows. This trend indicates a renewed institutional appetite for Bitcoin ETFs, with current price levels potentially viewed as an attractive entry point by value-conscious investors.
Why This Matters
The materials describe a narrow update: Following a period of capital outflows, US spot Bitcoin ETFs recorded nine consecutive days of inflows starting September 17, totaling approximately $3 billion. The exact end date of the nine-day winning streak beyond September 29 is not explicitly stated.
Broader Context
Source materials place the factual news in this context: Months of bleeding capital preceded the nine-day winning streak.
