The week ending May 15, 2026, was particularly notable, marking the strongest weekly inflow of the year at $60.5 million. This record week was spearheaded by the Bitwise XRP ETF, which attracted $25.68 million, and the Franklin XRP ETF, which drew $21.04 million in new investments .
In a sharp contrast, U.S. spot Bitcoin ETFs were at the center of a massive institutional sell-off. A four-week streak of billion-dollar redemptions that began in mid-May resulted in a cumulative $5.4 billion exiting these funds .
The sell-off coincided with a significant BTC price decline, which analysts linked to macroeconomic headwinds including rate-hike fears, with prices sliding from around $73,000 to $62,639 .
Ethereum ETFs were not immune to the broader risk-off sentiment. After briefly breaking a 17-day inflow streak, they quickly fell back into a pattern of outflows.
This return to outflows highlighted the fragility of institutional sentiment for Ethereum in the prevailing macro environment, even after a period of significant accumulation.
The divergence in flows is not random. Market analysts attribute the contrasting fortunes to a clear “rotation” narrative, where capital is being strategically reallocated based on asset-specific fundamentals and the broader economic picture .