U.S. spot Bitcoin and Ethereum exchange-traded funds drew a combined $1.2 billion during the trading week ended September 4, as Bitcoin reclaimed the $80,000 level and investor appetite for crypto assets improved.

Bitcoin funds led the move, accounting for more than 80% of the weekly total. The figures indicate that institutional demand remains resilient despite recent market volatility and shifting expectations for U.S. monetary policy.

Bitcoin ETFs Lead the Weekly Inflows

U.S. spot Bitcoin ETFs posted approximately $986.7 million in net inflows for the week, with BlackRock's Bitcoin fund capturing the largest share at roughly $691.5 million.

The surge followed an especially strong session on September 3, when Bitcoin ETFs recorded about $730.9 million in net inflows — their largest single-day inflow since January 14. BlackRock's fund accounted for roughly $454 million of that day's inflows, while ARK 21Shares and Fidelity also posted substantial gains.

Spot Bitcoin ETFs have been a major conduit for institutional crypto exposure since U.S. regulators approved them in January 2024, and BlackRock's iShares Bitcoin Trust has consistently ranked among the largest of these products by assets under management.

Bitcoin climbed back above $80,000 during the week, strengthening the link between renewed ETF demand and the cryptocurrency's price recovery.

Ethereum Demand Remains Positive

Ethereum ETFs attracted about $215.3 million over the same week, a sharp decline from the previous week's inflows. Even so, the latest numbers point to sustained institutional interest in Ethereum, with investors continuing to use regulated ETF products to gain exposure without directly holding the underlying cryptocurrency. U.S. spot Ethereum ETFs were approved in July 2024, several months after their Bitcoin counterparts, and their weekly flows have generally remained smaller relative to Bitcoin funds.

Market conditions remain a key factor for both assets. Stronger economic data and changing expectations for Federal Reserve policy could influence flows in the coming weeks.

The combined $1.2 billion inflow highlights renewed buying interest across the two largest cryptocurrencies. If ETF demand remains strong, it could provide additional support for Bitcoin and Ethereum as investors assess the next phase of the crypto market.