US spot bitcoin ETFs recorded net outflows of roughly $463 million this week, while their ether counterparts moved the opposite way, drawing in about $197 million in fresh inflows. The split highlights how institutional allocators have been rotating between the two largest crypto assets on a near weekly basis throughout 2026, rather than treating bitcoin and ether exposure as a single allocation.
This divergence isn’t new. Earlier in the year, ether products enjoyed multi-week inflow streaks that outpaced bitcoin, only for the pattern to reverse when bitcoin ETFs saw renewed demand during macro uncertainty. The latest week fits that same rotational pattern, with capital favoring ether even as bitcoin’s spot price performed relatively well against broader equities.
Separately, cumulative 2026 ETF flow data shows the picture has grown more cautious overall: total inflows for the year turned negative after crypto funds collectively shed around $1.7 billion, reversing what had been a strong start to the year for spot crypto products.
For issuers and market watchers, the week’s numbers reinforce that ETF flows remain a useful, if noisy, gauge of near-term institutional sentiment rather than a one-directional adoption story. Whether ether’s inflow streak continues, or bitcoin funds claw back demand, will offer a clearer signal of where institutional conviction currently sits.
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