US spot Bitcoin ETFs recorded $2.65 billion in net inflows in September, making it their second-best month since October 2025. BlackRock’s IBIT fund alone attracted $1.81 billion, representing more than 68% of the total, ahead of Fidelity’s FBTC with $682.5 million. On September 21, a single day captured nearly $1 billion, an 11-month record, as BTC crossed above $85,000 for the first time since January. For the third quarter overall, net inflows reached $6.34 billion with Bitcoin up nearly 43%. BTC was trading above $86,000 at the start of October, hinting at the prospect of a historically bullish Uptober.
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