Bitcoin and Ethereum spot exchange-traded funds (ETFs) both extended their buying streaks on Sept. 25, according to data from SoSoValue. Bitcoin funds recorded $134 million in net inflows, marking a seventh consecutive day of gains, while Ethereum ETFs added $86.95 million for a sixth straight session. BlackRock products led flows both markets, followed by Fidelity's Bitcoin fund. The latest readings cap a volatile stretch in 2026 that has seen alternating inflow spikes and sizeable outflows in both markets. Net inflows reflect sessions when fund share creations outpace redemptions, so consecutive positive days indicate sustained net buying through these products.

Bitcoin ETFs Reach Seven-Day Inflow Streak

BlackRock's IBIT attracted $96.99 million on Sept. 25, while Fidelity's FBTC took in $49.32 million. Together, the two funds accounted for most of the day's reported Bitcoin ETF inflows.

The latest figures fit into a series of shifts across the longer history of the Bitcoin ETF market. The products debuted in the United States in January 2024, and because they hold Bitcoin directly, net creations translate into purchases of the underlying asset, which is why the daily tallies are closely followed as a demand indicator. Early 2024 featured frequent inflows, with some daily gains reaching roughly $500 million to $1 billion, though sizeable outflows also appeared during that period. From October 2024 through January 2025, inflows grew larger, with some daily spikes approaching $1 billion to $1.35 billion, even as outflows still reached roughly $500 million to $700 million in that phase. Between April and October 2025, inflows again appeared frequently, with several exceeding $500 million.

Ethereum ETFs Add $86.95 Million

Ethereum spot ETFs recorded $86.95 million in net inflows on Sept. 25, extending their streak to six days. BlackRock's ETHA received $50.37 million, while ETHB attracted $31.88 million. The daily breakdown showed ETHA receiving about 18.94K ETH and ETHB adding nearly 11.8K ETH. FETH recorded roughly 1.8K ETH, while other listed funds showed little or no visible net flow.

The funds debuted in the United States in July 2024, and over the longer period their flows have remained uneven. Positive sessions have reached about 200K to 220K ETH, while the deepest outflows have approached 100K to 140K ETH, underscoring the uneven demand across the funds' history.

2026 Flows Show Diverging Patterns

Bitcoin ETF outflows became more persistent from late 2025 into mid-2026, with several daily figures reaching roughly $500 million to $900 million as the Bitcoin trend declined. July through September 2026 then brought several inflow spikes near $500 million to $1 billion, with the latest readings appearing closer to neutral.

Ethereum likewise saw more frequent outflows during 2026 after ETH declined toward roughly $1,600–$2,000. From June through September, ETH recovered toward $2,500–$2,700 as several inflow spikes reached about 70K to 100K ETH. Whether both streaks extend — and whether participation broadens beyond the largest funds, which captured most of the day's flows — will show up in the next daily SoSoValue readings.