U.S. spot Bitcoin ETFs recorded $241 million in net inflows between September 28 and October 2, extending their positive streak to three consecutive weeks, according to data from SoSoValue. Over the same period, spot Ethereum ETFs posted $138 million in net outflows, with Fidelity's FETH accounting for $74.06 million of the withdrawals.

The latest flows highlight diverging institutional demand, with Bitcoin funds attracting capital while Ethereum products recorded net withdrawals. Because ETF shares are created or redeemed in response to investor demand, net weekly flows are widely watched as a read on how institutional allocations shift between the two largest crypto assets.

Bitcoin ETF Inflows Extend Their Positive Streak

Bitcoin ETF activity has varied sharply since the products launched in January 2024, with large daily inflows and outflows throughout the period. Early 2024 featured several inflow spikes above $500 million, including one near $1 billion. Flows then turned mixed through mid-to-late 2024, with some outflows approaching $1 billion.

Momentum accelerated from late 2024 into the first half of 2025, highlighted by an inflow of roughly $1.3 billion to $1.4 billion around late October. Strong inflows continued from May through October 2025 as Bitcoin moved toward the $100,000-plus region.

In 2026, flows became more balanced, with smaller inflows andflows appearing more frequently. The latest chart data, however, shows renewed buying activity, including several inflows above $500 million, with the largest recent inflow reaching approximately $1 billion.

Ethereum ETF Flows Move in the Opposite Direction

Ethereum ETF flows have also been volatile since the funds began trading in July 2024, with swings continuing through early October 2026. Late 2024 brought increasingly positive flows as Ethereum recovered toward the $3,000 to $4,000 range.

Activity remained mixed through 2025, though larger inflows emerged during the middle and latter parts of the year. Several weekly inflows exceeded 100,000 ETH, while the largest approached 200,000 to 250,000 ETH. That stretch coincided with Ethereum moving above $4,000 and toward roughly $4,500 to $4,800.

During 2026, alternating inflows and outflows became more common. The latest Ethereum data shows renewed positive activity, with several inflows above 50,000 ETH and some reaching or exceeding 100,000 ETH despite continued volatility.

Latest Weekly Data Shows Diverging Flows

Despite that recent positive activity, the September 28 to October 2 figures show a different weekly result: Bitcoin ETFs added $241 million while Ethereum ETFs lost $138 million. Fidelity's FETH accounted for $74.0624 million of Ethereum's outflows.

The latest figures extend Bitcoin's three-week inflow streak, while Ethereum funds post a weekly net outflow. The next weekly readings from SoSoValue will show whether Bitcoin's run stretches to a fourth week and which direction Ethereum flows take from here.

Related coverage: Bitcoin ETFs extend inflow streak as demand signals diverge, Bitcoin ETFs add $134M as Ethereum funds gain $86.95M net, and Ethereum whales add $864M as price faces key resistance.