- BlackRock’s IBIT led spot Bitcoin ETFs with $969.95M inflows, nearing $100B in assets under management.
- Bitcoin ETFs saw $1.19B in total inflows, marking the second-largest day in U.S. ETF history, per SoSoValue.
- Ethereum ETFs logged $176.56M inflows, with BlackRock’s ETHA leading and total trading value reaching $2.65B.
Spot Bitcoin exchange traded funds (ETFs) in the United States logged one of their busiest trading sessions on Monday, with combined volumes from BlackRock and Fidelity reaching $5.48 billion.
According to data from SoSoValue, the surge indicates sustained institutional demand for Bitcoin as the asset trades near record highs. The spike in trading activity also coincided with strong inflows totaling $1.19 billion across spot Bitcoin ETFs, reflecting renewed capital rotation from major investment firms.
BlackRock IBIT Nears $100 Billion in Assets
BlackRock’s iShares Bitcoin Trust (IBIT) dominated inflows, attracting $969.95 million—over 80% of the day’s total. The ETF has now accumulated $2.6 billion in inflows since the start of October. IBIT’s assets under management reached approximately $98.5 billion, holding 783,767 BTC as of early October 2025.
Nova Dius President Nate Geraci noted that IBIT is on pace to surpass $100 billion in assets in under 450 days, a milestone that took the Vanguard S&P 500 ETF over 2,000 days to achieve. The total market activity for spot Bitcoin ETFs reached $6.53 billion in daily trading value, accounting for 6.79% of Bitcoin’s market capitalization.
Additional inflows came from Fidelity’s FBTC with $112.32 million, Bitwise’s BITB with $60.12 million, and Grayscale’s BTC with $30.55 million. Smaller contributions were recorded from Invesco BTCO, WisdomTree BTCW, and Franklin EZBC.
Fidelity and Others Boost Institutional Rotation
Fidelity’s Wise Origin Bitcoin Fund (FBTC) played a key role in maintaining liquidity among spot Bitcoin ETFs. The firm’s consistent inflows demonstrate how traditional asset managers continue to integrate digital assets into diversified portfolios. In late September 2025, Fidelity reportedly executed an aggressive capital rotation within its ETF lineup, reinforcing the broader accumulation strategies by institutional investors.
Meanwhile, analyst James Seyffart from Bloomberg noted that spot Bitcoin ETFs have now accumulated around $60 billion since their January 2024 debut. Monday’s inflows marked the second-largest day in ETF history, trailing only November 7, 2024, when $1.37 billion poured in following the U.S. presidential election results.
Ethereum ETFs See Modest Uptick
While Bitcoin ETFs led inflows, Ethereum ETFs recorded a total of $176.56 million. BlackRock’s ETHA topped the category with $92.59 million, followed by Bitwise ETHW and Fidelity FETH. The total trading value for Ethereum ETFs reached $2.65 billion, with net assets of $32.01 billion, representing 5.66% of Ethereum’s market capitalization.
At the time of writing, Bitcoin was trading at $124,567 with a $2.482 trillion market cap, while Ethereum stood at $4,724.41. The consistent rise in ETF activity and trading volumes shows ongoing institutional engagement amid the crypto market’s broader uptrend.
