May 15 ETF Flows: Bitcoin Sees Daily Inflow, Ethereum Bleeds Weekly, Solana Leads the Pack

Crypto ETF flow data for May 15 shows a mixed picture across the three major tracked assets. Bitcoin ETFs recorded a single-day net inflow of 1,761 BTC ($139.54M), a positive daily print — but the seven-day window tells a different story, with net outflows of 12,802 BTC ($1.01B) over the trailing week.

Ethereum ETFs are under pressure on both timeframes: a daily outflow of 2,350 ETH ($5.21M) compounds a seven-day bleed of 93,376 ETH ($206.83M), suggesting sustained redemption pressure rather than a one-off rotation.

Solana ETFs are the standout on this snapshot. The asset posted a daily inflow of 125,256 SOL ($11.15M) and a seven-day inflow of 672,781 SOL ($59.88M) — the only tracked ETF category showing consistent net positive flow across both windows.