Bitcoin, Ethereum, Solana, and XRP ETFs Experience Significant Net Inflows on September 28

On September 28, all major cryptocurrency spot ETFs saw a positive day, with Bitcoin, Ethereum, Solana, and XRP products each recording simultaneous net inflows, according to data from SoSoValue. The total combined inflow for the day reached around $65 million.

Bitcoin ETFs led the way with $31.07 million in net inflows, marking the lowest single-day figure for Bitcoin ETFs in September. Ethereum followed with $17.10 million, Solana with $12.70 million, and XRP with $3.96 million.

Despite the relatively modest daily figures, the cumulative inflows tell a different story. Since their launch in January 2024, Bitcoin spot ETFs have absorbed a total of $57.58 billion, with total net assets now at $107.82 billion, representing 6.42% of Bitcoin's entire market cap. Ethereum's cumulative net inflows stand at $13.96 billion against total assets of $17.69 billion. XRP ETFs, launched in late 2025, have accumulated $1.79 billion in inflows, while Solana's total is at $1.62 billion.

The week ending September 25 set the stage for this surge, as Bitcoin ETFs pulled in approximately $2.39 billion, the largest single-week figure of 2026. Solana also set a single-day inflow record of $86.7 million on September 25, just days before the synchronized inflow day.

Several factors are driving institutional interest in Solana and XRP. The issuer lineup for these products includes major players like BlackRock, Fidelity, Bitwise, and Grayscale, competing on fees and product structures. Notably, some Solana ETF structures offer staking integration, allowing holders to earn yield, a feature currently absent in Bitcoin and Ethereum products.

In the case of XRP, the resolution of its regulatory issues has led to a surge in demand from investors who were waiting for a regulated vehicle, contributing to the $1.79 billion in cumulative inflows since its late 2025 launch.