Bitcoin ETFs Drive $241 Million Inflows as BTC Defies October Weakness

Bitcoin (BTC) has defied its usual weak early-October trend in 2026, showing stronger performance during the first three days of the month. Historically, these days have been Bitcoin’s weakest, with an average decline of 0.66%. However, this year, Bitcoin held up better, suggesting a shift from its typical seasonal pattern.

U.S. spot Bitcoin ETFs contributed significantly to this resilience, attracting $241.09 million in inflows during the week ending October 2. This marked the third consecutive week of inflows for Bitcoin ETFs, while Ethereum funds experienced net withdrawals. According to Crypto Patel, U.S. spot Bitcoin ETFs acquired approximately 2,850 BTC between September 28 and October 2, equivalent to around six days of newly mined Bitcoin supply.

BlackRock-linked products led the purchases, adding about 5,347 BTC worth approximately $450.18 million. In contrast, Fidelity sold around 2,010 BTC, Bitwise sold 463 BTC, and Grayscale reduced its holdings by roughly 354 BTC. ARK 21Shares and Morgan Stanley-linked products also made smaller purchases.

Ethereum ETFs moved in the opposite direction, with net outflows of about $138.02 million during the week. Fidelity’s FETH led the withdrawals, accounting for roughly $74 million. U.S. Ethereum ETFs sold around 43,974 ETH during the reporting period, with Fidelity products alone selling 27,578 ETH. VanEck and Franklin-linked products also reduced their positions.