Bitcoin ETFs turn negative for 2026 after $1.28B weekly outflow

The concentration of Friday's selling in a single dominant fund is the detail that matters: when the largest, most liquid vehicle absorbs nearly all the outflow, it points to institutional repositioning rather than a broad retail retreat. The swing to negative year-to-date flows also gives the ETF complex a weaker footing as a demand signal for spot bitcoin. Whether the outflows stay concentrated in IBIT or spread across issuers is the open question, since a broadening would suggest a shift in sentiment rather than a single-fund adjustment.