- Bitcoin ETFs recorded $347M in net inflows, with BlackRock’s IBIT leading at $166M on Sept. 23.
- Ether ETFs added $105M, led by BlackRock’s ETHA with about $50.8M in net inflows.
- Combined ETF flows remain volatile in 2026, with major inflow spikes followed by sizeable withdrawals.
Bitcoin ETFs Post $347 Million Inflows

Bitcoin rose from about $42,000 to above $70,000 during early 2024, alongside several inflow spikes. Some daily inflows exceeded $500 million, while the largest early spike approached $1 billion.
Later, activity intensified, with several inflows reaching $1 billion or more. One major inflow reached about $1.35 billion, while some outflows approached $700 million to $1 billion. Bitcoin later moved toward $100,000 during mid-2025.
However, the second half of 2025 brought larger two-way flows. Several withdrawals approached $800 million to $900 million as Bitcoin declined toward $70,000-$80,000.
Ether ETFs Add $105 Million
Ether ETFs recorded $105 million in net inflows on Sept. 23. BlackRock’s ETHA led with approximately $50.8 million for the day. The Ethereum ETF chart shows daily flows concentrated among several funds.

Historical data shows aggregate Ethereum ETF flows repeatedly moved above 100,000 ETH. The largest spike approached 240,000 ETH around mid-2025.
ETF Flows Remain Volatile Into 2026

Ethereum flows also remained uneven despite intermittent positive sessions. Ethereum climbed toward $4,500-$4,600 during 2025 before falling toward $1,800-$2,000 in 2026. The latest ETF data therefore shows positive flows across both major spot crypto ETF categories on Sept. 23.
