Spot Bitcoin ETFs post $64.09 million net outflow on June 15; Grayscale's GBTC leads withdrawals with $124 million

Spot Bitcoin ETFs saw a combined net outflow of $64.0862 million on June 15 (U.S. Eastern Time), according to SoSoValue data cited by Odaily Planet Daily. BlackRock's iShares Bitcoin Trust (IBIT) recorded the largest single-day net inflow at $66.4488 million, lifting its cumulative historical net inflows to $62.181 billion. Grayscale Bitcoin Mini Trust ETF (BTC) followed with a $10.5999 million daily inflow, bringing its historical net inflows to $2.309 billion. On the outflow side, Grayscale's Bitcoin Trust (GBTC) posted the biggest single-day net outflow at $124 million, taking its cumulative historical net outflows to $26.975 billion. As of publication, spot Bitcoin ETFs held a total net asset value of $83.329 billion. Their net asset ratio—ETF market capitalization as a share of Bitcoin's total market cap—stood at 6.25%, while cumulative net inflows since launch reached $53.56 billion.