According to the source, U.S. crypto ETFs saw net selling of around $40.4M in BTC and $145.7M in ETH on Oct 20, indicating outflows in both products; source: original X post dated Oct 21, 2025. ETF redemptions typically lead authorized participants to sell underlying spot assets to meet withdrawals, which can add short-term sell pressure to BTC and ETH liquidity; source: U.S. SEC Investor Bulletin on Exchange-Traded Funds (ETF creation and redemption mechanics). Traders commonly monitor CME futures basis and spot market spreads during outflow days to gauge liquidity and hedging costs; source: CME Group education on futures basis and ETF-related hedging practices. Follow-up confirmation should come from the next daily flow reports published by ETF issuers and market data providers during U.S. trading hours; source: issuer daily flow disclosures (e.g., BlackRock iShares, Fidelity) and publicly reported ETF flow summaries.

According to the source, U.S. crypto ETFs recorded about $102.7M of BTC purchases and about $236.2M of ETH purchases on Oct. 14. According to the source, ETH ETF buying was roughly 2.3 times BTC buying on the day, indicating higher reported ETF flow into ETH than BTC. According to the source, combined ETF purchases for BTC and ETH totaled approximately $338.9M on Oct. 14.

According to Farside Investors, U.S. Ethereum ETFs posted a total net outflow of $135.3 million on 2025-09-02, indicating a negative flow day for the category (Source: Farside Investors). The largest withdrawal came from FETH at -$99.2 million, followed by ETHW at -$24.2 million, TETH at -$6.6 million, and ETHE at -$5.3 million (Source: Farside Investors). ETHA, ETHV, QETH, EZET, and ETH all recorded zero net flow for the session, with no funds showing net inflows on the day (Source: Farside Investors). These figures are based on the daily Ethereum ETF flow tracker maintained by Farside Investors for U.S.-listed products (Source: Farside Investors).