Recent data from a single day shows a rare synchronized rally in the US spot ETF market—both Bitcoin and Ethereum ETF products experienced no net outflows throughout the entire day, with a highly consistent inflow trend that is indeed noteworthy.

Looking at Bitcoin spot ETFs, the single-day net inflow approached 7.54 billion, marking the second consecutive day of positive net inflows. The entire sector performed strongly, with all participating ETF products absorbing funds. Among them, Fidelity's FBTC stood out with approximately 3.51 billion in inflows, equivalent to 3,720 Bitcoins, bringing its total net inflow to $12.19 billion.

Other major institutions also performed well. Bitwise's BITB added $159 million (1,690 BTC), BlackRock's IBIT followed with $126 million (1,340 BTC), and Ark & 21Shares' ARKB secured $84.88 million (899.70 BTC). Even traditional players like Grayscale, VanEck, and WisdomTree recorded net inflows of $18.8 million, $10 million, and $2.99 million respectively. These figures reflect ongoing market enthusiasm for Bitcoin ETFs.

As of now, the total assets under management (AUM) of Bitcoin spot ETFs have expanded to $123 billion, accounting for 6.52% of Bitcoin's total market capitalization. The cumulative net inflow has surpassed $57.27 billion. This indicates that institutional investors are continuously increasing their Bitcoin exposure through this convenient channel.

Ethereum's performance is equally strong. During the same period, Ethereum spot ETFs achieved nearly $130 million in single-day net inflows, marking the second consecutive day of such robust momentum, with zero net outflows also recorded.

Among Ethereum ETF participants, BlackRock's ETHA continues to lead, with a daily net inflow of $53.31 million (16,620 ETH), bringing its total net inflow to $12.69 billion. Grayscale's two products—ETH and ETHE—received $35.42 million (11,050 ETH) and $3.93 million (1,230 ETH) respectively. Bitwise's ETHW and Fidelity's FETH contributed $22.96 million (7,160 ETH) and $14.38 million (4,480 ETH) in inflows.

Looking at the entire Ethereum ETF sector, the total net asset value has approached $19.62 billion, representing 5.07% of Ethereum's total market cap. Since launch, this market has absorbed a total of $12.55 billion in funds.

In comparison, both Bitcoin and Ethereum spot ETFs are in a phase of continuous fund absorption. Although the daily inflow volume for Bitcoin ETFs is significantly larger than that for Ethereum, both demonstrate strong market demand. Behind this phenomenon, it reflects investors' optimism toward these two major cryptocurrencies and also indicates that the demand for compliant channels to allocate crypto assets is steadily increasing. As institutional investors gradually enter the market, the growth of such products will continue.