U.S. spot Bitcoin ETFs recorded a weekly net inflow of approximately $921 million last week, marking the fourth consecutive week of net inflows. BlackRock's iShares Bitcoin Trust (IBIT) achieved a notable 19-day streak of net inflows, the longest in 2025, with a total inflow of $1.03 billion this week. In contrast, spot Ethereum ETFs experienced a net outflow of $38 million over the same period. On May 13, BlackRock purchased 686 Bitcoin for $70 million.
On May 13, Bitcoin ETFs saw a significant shift with net outflows amounting to $96.14 million, ending BlackRock's IBIT 20-day inflow streak. This marked the fund's first zero-flow day since April 14. Conversely, Ethereum ETFs recorded net inflows of $13.37 million on the same day, with 5,410 ETH bought and 889 BTC sold.
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