US Spot Bitcoin ETFs Secure $526M as BlackRock IBIT Inflows Outpace Rivals

US spot bitcoin exchange-traded funds registered $526.6 million in net inflows on Monday, logging their largest single-day tally in nearly a month ¹. The performance was driven almost exclusively by BlackRock’s iShares Bitcoin Trust (IBIT), which attracted $665.2 million in capital ¹. At the time of writing, $BTC traded around $81,403, down 1.7% over the trailing 24 hours.

The massive allocation into IBIT represented the fund's largest daily net inflow since Oct. 7 of last year, according to data from SoSoValue ¹. The aggregated intake was the highest for the US spot cohort since Sept. 22, when vehicles secured a collective $714.7 million ¹. However, investor demand remained highly concentrated within the market leader, as competing issuers grappled with redemptions ¹. Fidelity’s FBTC lost $83.6 million, Grayscale’s GBTC posted $54.9 million in net outflows, and the remainder of the cohort logged flat flows during the trading session ¹.

Ether ETFs Extend Outflow Streak

Monday's influx more than compensated for the $228.5 million in aggregate redemptions logged during the prior week, following broader market pullbacks detailed in US spot bitcoin and ether ETF weekly outflows ¹. Despite the turnaround, net flows across the bitcoin suite remain approximately $90.5 million in negative territory for the month of October, based on CoinDesk calculations using SoSoValue figures ¹.

Conversely, US spot ether products diverged sharply, shedding $103.3 million in their fourth straight session of net withdrawals ¹. The contraction in $ETH investment vehicles was largely headlined by BlackRock’s iShares Ethereum Trust (ETHA), which recorded $95.4 million of the day's redemptions ¹. Market observers are closely monitoring whether consecutive institutional allocations into IBIT can sustain net positive momentum for the wider sector heading into late-month trading sessions ¹.