TechFlow reported, according to SoSoValue data, that yesterday (May 21st, U.S. Eastern Time), the total net inflow for spot Bitcoin ETFs was $306 million. On the same day, Grayscale's ETF GBTC recorded a net outflow of $0.00, bringing GBTC's historical cumulative net outflow to $17.611 billion.
The spot Bitcoin ETF with the largest single-day net inflow yesterday was BlackRock's IBIT, which attracted $290 million in net inflows. IBIT's historical cumulative net inflow now stands at $15.991 billion. This was followed by Fidelity's FBTC, which saw a daily net inflow of $25.8039 million, bringing its total historical net inflow to $8.576 billion.
At the time of reporting, the total net asset value of spot Bitcoin ETFs reached $58.91 billion. The ETF net asset ratio (the proportion of ETF market capitalization relative to the total Bitcoin market cap) stood at 4.29%, with the historical cumulative net inflow reaching $13.173 billion.





