Bitcoin spot ETFs log $433 million net inflow on Sept. 18; Fidelity's FBTC tops the list with $311 million
AI Market Summary
US spot Bitcoin ETFs saw a $433m net inflow on Sept 18, with Fidelity's FBTC leading and BlackRock's IBIT remaining dominant by cumulative flows. Total ETF NAV is ~$102.5bn, representing 6.29% of Bitcoin's market cap, and cumulative net inflows since launch have reached ~$55.2bn. Continued ETF demand signals sustained institutional allocation pressure and supportive near-term market liquidity.
Impact level
● High
Affected assets
BTC/USDT+4.54%
AI Insight · BTC/USDTAI Insight
▲ Bullish
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Bitcoin spot ETFs attracted a combined $433 million of net inflows on Sept. 18 (U.S. Eastern Time), according to SoSoValue data cited by Odaily Planet Daily.
Fidelity's FBTC posted the largest single-day net inflow, bringing in $311 million. Its cumulative historical net inflow has risen to $10.362 billion.
BlackRock's IBIT ranked second, recording $1.08 billion of net inflow; its total historical net inflow now stands at $64.125 billion.
As of publication, spot Bitcoin ETFs held $102.532 billion in total net assets. The ETF net asset ratio—market capitalization as a share of Bitcoin's total market cap—stood at 6.29%, while cumulative net inflows since launch reached $55.161 billion.
