BTC Suffers Historic Outflows as ETH Momentum Slows Down After 20-Day Run

The crypto ETF market experienced a week of extremes. What began with steady inflows for both bitcoin and ether ended in one of the most dramatic outflow days of 2025, sending shockwaves through institutional circles.

Bitcoin ETFs, after a modest start, collapsed under selling pressure on Friday, logging $812 million in outflows, the second-largest daily loss ever recorded. For the week, BTC ETFs closed with a net outflow of $644 million, breaking a seven-week inflow streak.

Blackrock’s IBIT remained relatively resilient (+$355.34 million added over the week) along with Vaneck’s HODL (+$9.13 million) but was overshadowed by massive exits from Fidelity’s FBTC (-$354.17 million) and Ark 21shares’ ARKB (-$443.50 million).

Other exits for the week were seen across Grayscale’s GBTC (-$124.94 million), Bitwise’s BITB (-$66.58 million), and Grayscale Bitcoin Mini Trust(-$16.93 million).

Cumulative weekly totals: BTC ETFs: -$643 million and ETH ETFs: +$154 million

Ether ETFs painted a different picture. Riding a 20-day inflow streak, they piled on $241 million by Thursday, but Friday’s $152 million outflow trimmed the final weekly gain to $154.32 million.

Blackrock’s ETHA dominated the inflows (+$394.15 million), while Fidelity’s FETH (-$72.05 million), Grayscale’s ETHE (-$53.80 million), Grayscale’s Ethereum Mini Trust (-$47.68 million), and Bitwise’s ETHW (-$40.30 million) led the way for the losses.

Trading volumes hit new highs, with BTC ETFs recording $6.14 billion on Friday alone, and ETH ETFs surging to $2.26 billion. Despite the outflows, net assets remain robust at $146.48 billion for BTC and $20.11 billion for ETH, signaling continued institutional engagement, even amid volatility.

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