Bitcoin and Ethereum ETFs soar. | Credit: Michael M. Santiago/Getty Images.
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Key Takeaways
U.S. spot Bitcoin ETFs command $151.72 billion in total net assets, or 6.6% of BTC’s market cap.
The U.S. Federal Reserve is expected to announce a rate cut on Sept. 17, 2025.
Ethereum ETFs hold $29.72 billion in net assets, representing 5.46% of ETH’s market cap.
Markets are rallying behind the pending interest rate cut from the U.S. Federal Reserve, which has seen $619.73 million pour into U.S. spot Bitcoin (BTC) and Ethereum (ETH) exchange-traded funds (ETFs).
Interestingly, attention appears to be returning to ETH funds after a brief period of exits.
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As per SoSoValue data, Ethereum ETFs recorded $359.73 million in daily total net inflows on Sept. 15, marking day five of a renewed inflow streak now totaling just over $1.09 billion.
Ethereum ETF flows. | Source: SoSoValue.
After pulling a historical $5.43 billion in July, funds followed up this momentum with $3.87 billion in monthly net inflows for Aug.
This follows weeks of net inflows, the cracks began to show in late August and early September as investors pivoted back toward BTC ETFs, albeit briefly.
Momentum was lost and weekly outflows peaked at $787.74 million during the first week of Sept. As of today, those losses have been balanced out.
Bitcoin ETFs
As per SoSoValue, Bitcoin ETFs garnered $260.02 million in daily total net inflows on Sept. 15, 2025.
It marks a fifth consecutive day of inflows now totalling more than $2.6 billion.
Bitcoin ETF flows. | Source: SoSoValue
Bitcoin funds conceded some ground to ETH funds through July, though they still managed to tally $6.02 billion in monthly net inflows.
They suffered a similar fate in August, when they saw $751.12 million in monthly net outflows.
Markets are now rallying in anticipation of tomorrow’s supposed rate cut announcement, and behind ETFs, crypto markets have moved steadily over the past week.
As per CoinMarketCap, the crypto market cap is up by half a percentage at $4.01 trillion in the past 30 days.
Bitcoin is trading up $115,405 for the past week, and Ethereum has risen 3.87% to $4,501 in that same time.
Eddie is a gaming and crypto writer at CCN. Covering the often weird and wonderful world of Web3 with an adoring, but skeptical eye.
Prior to CCN, Eddie has spent the past seven years working his way through the crypto, finance, and technology industry. He began with PR and journalism with Bitcoin PR Buzz and BitcoinNews.com, eventually working his way to become a copywriter with a dozen firms, including the likes of Polkadot before returning to journalism in 2023.
Having studied Radio production and journalism at University in the UK, Eddie spent a few years making podcasts and presenting on a local London radio station as he built up his writing chops.
A lifelong skateboarder, Eddie can often be found at the skatepark or touring the streets looking for something new to try. That, or kicking back playing JRPGs on his original PSP.
