Crypto

Bitcoin and Ethereum ETF Inflows Surge Amid Growing Market Share

Guavy AI Editorial Team Published September 19, 2026

Instruments

BTC ETH FET

Bitcoin and Ethereum ETFs saw significant inflows on September 18, according to recent data. US spot Bitcoin ETFs pulled in a total of $433 million in net inflows, while spot Ethereum ETFs added $144 million.

Fidelity's FBTC was the standout performer on the Bitcoin side, attracting $311 million of the day's total. BlackRock's IBIT contributed $108 million to the inflows.

On the Ethereum front, BlackRock's ETHA led with $114 million, while Fidelity's FETH added roughly $26 million.

The numbers behind these flows are telling: total Bitcoin ETF assets under management now stand at $102.532 billion, representing 6.29% of Bitcoin's entire market capitalization. Cumulative historical net inflows into these products have hit $55.161 billion since their launch.

Bitcoin and Ethereum ETF Inflows Surge Amid Growing Market Share

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