Bitcoin ETFs Hit Record Weekly Volume in 2025 as BlackRock’s IBIT Extends Inflow Streak

Spot bitcoin ETFs in the U.S. just logged their busiest trading week of 2025, fueled by renewed investor interest and rising crypto prices. According to data from SoSoValue, $25 billion in bitcoin ETF shares changed hands last week, the highest weekly trading volume since December 2024.

The surge wasn’t just in trading activity. The funds also pulled in a net $2.75 billion in new capital, marking the second-highest weekly inflow since these ETFs debuted in early 2024. This signals growing confidence from both retail and institutional investors in bitcoin as an asset class.

Leading the charge is BlackRock’s iShares Bitcoin Trust (IBIT), which continues to dominate the market. IBIT has now notched 30 consecutive trading days without meaningful outflows, highlighting strong investor retention. The fund currently holds 3.3% of all bitcoin in circulation, with a net asset value exceeding $71 billion—more than three times the size of its closest competitor, Fidelity’s FBTC.

“This past week’s trading volume significantly exceeded recent daily averages and is contributing to continued market strength,” said Valentin Fournier, Lead Research Analyst at BRN.

While bitcoin ETFs stole the spotlight, Ethereum products also saw a jump in inflows. Ethereum ETFs attracted nearly $250 million in new investments—their largest weekly inflow since February—even as overall trading volume dipped slightly.

Bitcoin itself had a volatile close to the week. After hitting a fresh all-time high on Thursday, the cryptocurrency dipped slightly on Friday but has remained stable in the past 24 hours, trading around $108,900.

The record-breaking week for spot bitcoin ETFs underscores growing momentum in crypto markets, with investors pouring in capital as confidence builds. BlackRock’s IBIT continues to lead the pack, reinforcing its position as a key player in the digital asset investment landscape.