U.S. spot Bitcoin ETFs recorded $175 million in net inflows on Sept. 4, extending their inflow streak to three days. According to SoSoValue, BlackRock’s IBIT led the session with $117 million, while Fidelity’s FBTC added $57.22 million. Spot Ethereum ETFs posted $26.46 million in net inflows during the same session, with BlackRock’s ETHA gaining $57.79 million despite mixed flows across individual funds.

The recent ETF buying coincided with Bitcoin’s move above $81,000 and heavy short liquidations. Daily flow data has become one of the most widely tracked gauges of institutional demand since U.S. spot Bitcoin ETFs launched in January 2024, because the funds offer regulated exchange-traded exposure to Bitcoin without direct custody by investors.

BlackRock Leads Bitcoin ETF Inflows

According to Darkfost, Bitcoin ETFs received about 9,450 BTC worth roughly $730.8 million on Friday. Darkfost linked the buying activity to Bitcoin’s move above $81,000 and also cited short liquidations during the move. More than $448 million in short positions faced liquidation over the previous 24 hours, according to the analyst.

Meanwhile, the U.S. Bitcoin ETF market extended its three-day inflow run. BlackRock’s IBIT accounted for the largest reported inflow at $117 million, followed by Fidelity’s FBTC with $57.22 million, giving the two funds most of the session’s total. IBIT and FBTC have consistently ranked among the largest spot Bitcoin ETFs by assets, which means their flows heavily shape the daily net totals.

Ethereum ETFs Post $26.46M Net Inflow

Ethereum ETFs recorded $26.46 million in combined net inflows on Sept. 4, though individual fund flows varied across the session. BlackRock’s ETHA reported $57.79 million in inflows, and ETHB recorded another $16.44 million, while Fidelity’s FETH posted $48.30 million in net outflows.

The mixed results came alongside renewed Bitcoin ETF buying. The broader chart also shows several periods of large daily flow changes since 2024. U.S. spot Ethereum ETFs began trading in July 2024, several months after their Bitcoin counterparts, and their flows have generally been smaller and more uneven fund-by-fund.

ETF Flows Shift Across 2024-2026

The chart shows major Bitcoin ETF inflow bursts between October and December 2024. Some sessions reached roughly $1.35 billion, while outflows approached $500 million during other sessions. In March 2025, outflows reached about $1 billion as Bitcoin corrected.

From April through July 2025, several inflow sessions exceeded $800 million, and one session approached $1.2 billion during that period. However, late 2025 and early 2026 brought repeated outflows near $800 million to $900 million. Bitcoin’s price also retreated during that stretch, and by February 2026 the price line approached the chart’s lower range.

More recently, August and early September showed multiple inflow spikes, several reaching about $600 million to $700 million, while recent outflows remained comparatively smaller. Whether the current three-day inflow streak extends will show up in the coming sessions’ flow reports.