US spot Bitcoin exchange-traded funds (ETFs) recorded their largest weekly net inflows in nearly a year, attracting $2.4 billion for the week ending September 25. This surge has flipped the year-to-date net flows to a positive $934 million, a significant recovery from the approximately $5.8 billion deficit the category faced as recently as mid-July.
The week ending September 25 marked the strongest inflow period for Bitcoin ETFs since early October 2025. Leading the charge was BlackRock’s iShares Bitcoin Trust (IBIT), which attracted about $1.2 billion. Fidelity’s FBTC followed with approximately $702 million, and ARK 21Shares’ ARKB secured $295 million. These three products collectively accounted for over 90% of the week’s capital inflows.
Daily flow data revealed a peak on Monday, with inflows reaching nearly $999 million. However, momentum tapered off as the week progressed, with Friday’s inflows dropping to $135 million. This deceleration coincided with Bitcoin’s price pullback from an early-week high near $87,000 to the $83,000-$84,000 range, suggesting that price volatility may have tempered buying enthusiasm.
The positive trend was not limited to Bitcoin. Ether ETFs attracted approximately $690 million during the same week, while XRP ETFs saw inflows of $76 million, and Solana ETFs garnered $188 million.
Contextualizing this recovery, spot Bitcoin ETFs experienced substantial outflows earlier in the year, including a record $4.51 billion in June. The shift from a mid-July deficit of $5.8 billion to a positive year-to-date balance of $934 million underscores a sustained period of aggressive buying. The preceding seven-session inflow streak suggests this trend may represent a more durable change in investor positioning.
Since their launch in January 2024, spot Bitcoin ETFs have accumulated over $57 billion in cumulative net inflows. By late September 2026, these products held approximately $108 billion in assets under management. The recent strong inflows signal a renewed investor interest and a significant rebound in capital allocation towards Bitcoin ETFs, despite earlier market challenges.
Why This Matters
The materials describe a narrow update: Spot Bitcoin ETFs in the US recorded $2. The exact date of the “early October 2025” inflow peak.
Broader Context
Source materials place the factual news in this context: US spot Bitcoin ETFs just had their best week in nearly a year.
