$5.86 Billion In Bitcoin Flows Into ETFs In May

The crypto community is once again stunned by the bullish move pulled by Bitcoin Exchange-Traded Funds (ETFs), following massive inflows recorded over the last month, according to a recent post from Bitwise CIO, Matt Hougan.

Bitcoin ETFs are bullish

Despite the high price volatility experienced over the past month, institutional demand has continued to peak, as spot Bitcoin ETFs recorded multiple consecutive days of inflows.

The inflows recorded by overall Bitcoin ETFs in May have surpassed $5.86 billion—an impressive surge signaling bullish optimism among institutional investors.

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According to data provided by Sosovalue, the massive rally experienced by Bitcoin ETFs throughout May didn’t extend through the month’s end, as the ecosystem saw an unusual outflow on May 30.

The data shows that Bitcoin ETFs posted a net outflow of $616.22 million on May 30. However, the multiple streaks of significant inflows throughout the month brought the ETFs’ cumulative total net inflows to a massive $44.37 billion as of May 30.

Despite the notable outflow on May 30, Bitcoin ETFs managed to attract $5.86 billion from institutional investors in May alone.

Per the chart provided by Sosovalue, BTC ETFs amassed a massive $5.23 billion in monthly net inflows for May—almost double the $2.97 billion recorded in April. Impressively, this inflow has offset the $4.6 billion in outflows recorded between February and March, effectively recovering losses from both months combined.

Ethereum ETFs barely break half a billion

Although Ethereum ETFs have also maintained positive momentum with a net inflow of $564 million, they lag far behind their BTC counterparts by several billion dollars.

Despite some notable outflows during the month, this significant net inflow makes May the best-performing month for Ethereum ETFs in 2025 so far.

This notable surge positions May as one of the top-performing months for both Bitcoin and Ethereum ETFs, reflecting increased institutional interest and confidence in crypto-backed financial products.