December rebound shows volatility: U.S. spot Bitcoin ETFs +$198M, Ether ETFs +$143M; ETH ETFs record $19.4M outflows on Dec 12

first published 2025-12-13T11:34:00Z

In December 2025 U.S. spot Bitcoin and Ethereum ETFs logged combined inflows of roughly $341M — $198M to Bitcoin ETFs and $143.35M to Ethereum ETFs. BlackRock’s IBIT added nearly $4B in holdings over 13 days (from $66.26B to $70.12B); ETHA led Ethereum inflows. ETF-held Bitcoin rose above $118B (about 6.57% of BTC market cap). The flows represent a rebound after steep November outflows ($3.48B from Bitcoin ETFs and $1.42B from Ethereum ETFs) following the Oct. 10–11 flash crash and weak crypto performance.

AI Analysis

Combined ETF inflows (~$341M) and a ~ $4B increase in IBIT holdings are concrete net-buy signals for BTC/ETH exposure; ETF-held Bitcoin exceeding $118B quantifies scale. The move is presented as a rebound after much larger November outflows ($3.48B BTC, $1.42B ETH) tied to the Oct. 10–11 flash crash and weak performance, which frames this as partial recovery rather than a decisive trend flip.

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