Inflows into spot Bitcoin ETFs have remained strong, clocking close to $300 million on Tuesday, September 17. This hints that institutional confidence in BTC has remained strong despite BTC price staying stagnant at $115,000. On the other hand, flows into Ethereum ETFs have flipped negative yesterday.
Bitcoin ETF Inflows Show Institutional Strength
Inflows into spot Bitcoin ETFs have resumed over the past week, ahead of the much-awaited Fed rate cuts this week. This shows that institutional confidence in BTC has been rising once again. So far in 2025, Gold ETFs have dominated most of the infl,ows and now Bitcoin ETFs are catching up.
On Tuesday, September 16, inflows into spot Bitcoin ETFs were $292 million across all US ETF issuers. BlackRock’s IBIT dominated most of the inflows at over $209 million. BlackRock’s iShares Bitcoin Trust (IBIT) scoopof 1,794 BTC yesterday, with daily trading volume reaching a massive $2.2 billion.

Since its inception, BlackRock’s IBIT has reached a massive $60 billion in net inflows. As a result, IBIT now holds 763,699 BTC in its kitty with net assets under management at $88 billioas per the official iShares website. On Tuesday, the IBIT share priso surged to 66, in a broader market rally.
Bitcoin ETFs Enter Top 100 With $110B in Asset.s
Two U.S.-listed Bitcoin exchange-traded funds (ETFs) have entered the ranks of the top 100 funds by assets under management (AUM), with a combined $110 billion. BlackRock’s IBIT leads the pack, closing in on SPDR Gold Shares (GLD), the world’s largest gold ETF.
The milestone underscores Bitcoin’s growing acceptance among institutional investors. This shows a major capital rotation from traditional safe-haven assets like gold into digital alternatives.

Bitwise CEO Hunter Horsley announced that one of the country’s largest banks, with over $1 trillion in assets, has onboarded Bitwise as an asset manager. As part of the move, the Bitwise Bitcoin ETF (BITB) has been approved for inclusion in managed accounts and brokerage platforms. As a result, BITB will be accessible to more than 10,000 wealth managers nationwide.
On the other hand, the U.S. Securities and Exchange Commission (SEC) has initiated proceedings to evaluate the proposed listing of the Truth Social Bitcoin ETF on NYSE Arca. The move signals that a regulatory decision on the application is now pending.
Ethereum ETF Flows Flip Negative, Is Sentiment Changing?
After a week of positive inflows, spot Ethereum ETFs saw negative flows on September 16. On Tuesday, Ethereum exchange-traded funds (ETFs) saw outflows totaling $61.7 million. BlackRock and Fidelity accounted formostk of the withdrawals, collectively selling $68.4 million worth of Ethereum.

Just ahead of the Fed rate cut announcement, the ETH price has been flirting under $4,500, as market analysts believe the 25bps Fed rate cut is already priced in. Crypto analyst Michael van de Poppe said Ethereum ($ETH) holds a crucial support area, calling it a positive signal. He added that if Ethereum loses this level, it is a favorable opportunity to “buy the dip.”




