BlackRock Bitcoin ETF Leads ETFs Weekly Inflows With $3.5B

BlackRock Bitcoin ETF eyes $100 billion in asset under management (AUM) as it leads the ETFs' weekly inflows with $3.5B.

BlackRock Bitcoin ETF, the iShares Bitcoin Trust (IBIT), became the most popular exchange-traded fund in the United States this week. The spot Bitcoin ETF attracted an amazing $3.5 billion in weekly inflows, outperforming some of Wall Street's most significant equity and bond funds.

BlackRock Bitcoin ETF Accounts for 10% of all U.S. ETF Inflows

According to Bloomberg analyst Eric Balchunas, the BlackRock Bitcoin ETF led all U.S. ETFs in net inflows, accounting for almost 10% of total market inflows. One out of every ten dollars invested in ETFs last week went towards BlackRock's Bitcoin product.

$IBIT is #1 in weekly flows among all ETFs w/ $3.5b which is 10% of all net flows into ETFs. Also notable is the rest of the 11 OG spot btc ETFs all took in cash in past week, even $GBTC somehow, that's how hungry the fish are. Two steps forward mode. Enjoy while it lasts. pic.twitter.com/iNrcgiRVHV

— Eric Balchunas (@EricBalchunas) October 8, 2025

That rise implies renewed institutional interest in the Bitcoin market as the coin gets traction again in the fourth quarter of 2025. Conventional ETFs such as Vanguard VOO, State Street SPLG, and Invesco QQQ trailed significantly. This shows that investor attention is shifting back to digital assets.

Balchunas added that the flows were unprecedented and massive. He pointed out that GBTC from Greyscale has received inflows in previous sessions.

Bitcoin ETFs Continue Seven-Day Inflow Streak

SoSoValue's latest data lends credibility to this momentum. Spot Bitcoin ETFs received a total net inflow of $875.61 million on October 7, marking seven days of positive flows. BlackRock's IBIT was the most popular of the spot Bitcoin ETFs, with $899.42 million in inflows on the day.

Fidelity's FBTC witnessed no outflow, whilst Grayscale's GBTC experienced an outflow of $28.62 million. Valkyrie BRRR and ARKB of Ark Invest reported a limited inflow of funds.

The significant inflow of capital indicates that Bitcoin as an investment instrument is gaining popularity. The BlackRock Bitcoin ETF is on the verge of becoming the largest ETF, with assets under management approaching $100 billion. IBIT is BlackRock's most profitable fund, cementing the company's supremacy in the ETF market.

Inflows continue to grow, bringing it closer to this historic moment. When it reaches this milestone, it will be one of the largest ETFs in the world. Although it is not yet two years old, its growth has been astounding.