U.S. Bitcoin ETFs Lose $1.28 Billion as 2026 Flows Turn Negative

U.S. spot Bitcoin (BTC) ETF flows swung to a $914.1 million net outflow for 2026 after the funds recorded $1.28 billion in net outflows last week, their weakest weekly result since late June.

The 12 funds saw outflows on four of five trading days. Net outflows totaled $398.6 million Monday, $115.6 million Tuesday, $430.2 million Thursday and $411.9 million Friday. Wednesday brought a $74.6 million net inflow, the only positive session.

The weekly loss was the largest since the week ended June 26, when the funds lost $1.79 billion. It ranked as the seventh-largest weekly outflow since the ETFs began trading in January 2024. The previous week ended with a $202.6 million net outflow.

The funds’ combined net asset value fell 2.3% during the week to $95.9 billion, equivalent to about 6.3% of Bitcoin’s total market capitalization. Before last week, the funds had attracted about $368 million net in 2026. Friday’s figures left year-to-date flows at negative $914.1 million.