Bitcoin spot ETFs experienced a net outflow of $64.08 million on June 15, according to SoSoValue data. The largest single-day net inflow was recorded by Blackrock's ETF IBIT, which saw an inflow of $66.44 million, bringing its total historical net inflow to $62.18 billion. Grayscale's Bitcoin Mini Trust ETF BTC followed with a net inflow of $10.59 million, totaling $2.309 billion historically. Conversely, Grayscale's ETF GBTC led the outflows with $124 million, contributing to a total historical net outflow of $26.975 billion. As of the latest data, the total net asset value of Bitcoin spot ETFs stands at $83.329 billion, with an ETF net asset ratio of 6.25% relative to Bitcoin's total market capitalization. The cumulative historical net inflow for these ETFs has reached $53.56 billion.