U.S.-listed spot Bitcoin exchange-traded funds (ETFs) have seen an explosive surge in demand this May, raking in a total net inflow of $5.77 billion, marking their strongest performance since November, according to SoSoValue data.
This surge in ETF investments coincides with Bitcoin’s spot price soaring to record highs above $110,000, reflecting renewed bullish sentiment and institutional demand.
Strong Investor Appetite Fuels Inflows
Since mid-April, the 11 U.S.-listed Bitcoin spot ETFs have experienced net outflows on only four trading days, showcasing the consistent investor appetite for direct exposure to Bitcoin through regulated investment vehicles.
“Investor positioning appears to be largely directional, with a growing interest in arbitrage strategies such as cash-and-carry,” analysts noted.
The strong performance signals a continued shift in how traditional finance interacts with crypto markets.
BlackRock’s IBIT Leads the Pack
Among the 11 ETFs, BlackRock’s iShares Bitcoin Trust (IBIT) has dominated inflows, benefiting most from the broader bullish market momentum.
With Bitcoin spot prices hitting fresh all-time highs, investors have increasingly chosen IBIT as a trusted and efficient gateway to digital asset exposure.
Bullish Trend Continues Amid Market Volatility
The renewed momentum in ETF flows comes at a time when Bitcoin has broken through multiple resistance levels, attracting retail and institutional capital alike. The steady ETF inflows offer a liquidity boost to spot markets and reinforce the growing integration of crypto with mainstream financial products.
Bitcoin ETFs Strengthen Market Legitimacy
The inflow data also supports a narrative of maturing crypto infrastructure, with ETFs helping to normalize digital asset investing within retirement portfolios, hedge funds, and wealth management strategies.
With spot ETF performance heating up and Bitcoin’s price action trending upward, May may mark a turning point in institutional crypto adoption.

