Bitcoin spot ETFs hemorrhaged roughly $64 million in net outflows on June 15, while Ethereum, Solana, and XRP funds collectively pulled in about $28 million.

Ethereum led the altcoin charge with approximately $22.5 million in net inflows. Solana and XRP each attracted around $2.8 million apiece.

Grayscale’s GBTC product continues to be a major contributor to Bitcoin’s outflow problem. The converted trust has been a persistent source of selling pressure since its spot ETF conversion, and the pattern showed no signs of breaking on this particular trading day.

Meanwhile, XRP’s price climbed roughly 7% and Solana gained about 6%. Cumulative inflows for XRP spot ETFs have surpassed $1.44 billion since their launch in late 2025.

The combined $28 million flowing into altcoin ETFs on a single day, while Bitcoin shed $64 million, creates an interesting dynamic. For every dollar going into altcoin ETFs, more than two dollars left Bitcoin funds.

In 2025, spot ETFs for leading digital assets beyond Bitcoin garnered significant regulatory attention, resulting in Ethereum ETFs being introduced first, followed by those for Solana and XRP later that year. These products allowed traditional investors to gain exposure to cryptocurrencies without the need for direct token custody.