US Bitcoin ETFs see $3.8 billion in inflows, marking the strongest three-week performance of 2026

TechFlow reported on September 5 that, according to Cointelegraph citing SoSoValue data, US spot Bitcoin ETFs have recently seen a significant wave of capital inflows. Statistics show that over the past three weeks, related funds recorded cumulative net purchases of approximately $3.8 billion, marking the strongest growth period year-to-date in 2026. In particular, the week ending this Friday alone absorbed over $986 million in funds, demonstrating a strong rebound in institutional demand.

On a product-specific basis, BlackRock’s iShares Bitcoin Trust (IBIT) stood out, capturing a single-day net inflow of $117.4 million on Friday alone, which accounted for 67% of that day’s total inflows. Fidelity’s Wise Origin Bitcoin Fund (FBTC) was the only other fund to record positive inflows on the same day, attracting $57.2 million. Despite this week’s strong gains reversing the heavy outflow trend since the beginning of the year, the overall year-to-date fund flow currently remains in a negative zone of approximately $1 billion.