According to the source, US spot Bitcoin (BTC) ETFs recorded a $1.12B net outflow this week and US spot Ethereum (ETH) ETFs posted a $311M net outflow. Source: X post dated Oct 18, 2025. For trading, the cash-creation and cash-redemption structures used by major US spot BTC/ETH ETFs can require transacting in underlying coins during redemptions, potentially adding sell pressure and volatility during US market hours; monitor daily flow prints and NAV premiums/discounts for direction. Source: iShares Bitcoin Trust (IBIT) and Fidelity Wise Origin Bitcoin Fund prospectuses.

According to the source, the ARK 21Shares Bitcoin ETF (ARKB) recorded its largest daily net outflow since August, reported on Oct 17, 2025. Source: the source. Large redemptions in spot Bitcoin ETFs adjust the fund’s BTC holdings via the creation and redemption mechanism detailed in issuer SEC filings, which can translate into selling pressure through authorized participant hedging and liquidity provisioning. Source: ARK 21Shares Bitcoin ETF prospectus filed with the U.S. SEC. For trading, monitor ARKB’s same-day net flows, changes in shares outstanding, and premium or discount to NAV to gauge whether redemptions persist and whether BTC spot volatility could rise. Source: ARK 21Shares daily fund disclosures and SEC filings. Cross-check breadth of flows across major U.S. spot Bitcoin ETFs (e.g., IBIT, FBTC) to confirm whether outflows are fund-specific or market-wide, which can refine directional bias and risk management. Source: Farside Investors U.S. spot Bitcoin ETF daily flow dashboard.

According to Farside Investors, the ARK 21Shares Bitcoin ETF (ARKB) recorded US$275.2 million in net outflows on Oct 16, 2025, based on its US Bitcoin ETF Daily Flow tracker (source: Farside Investors). Under ARKB’s cash creation and redemption model, net redemptions generally require the fund to sell bitcoin to raise cash for redeeming shares, linking outflows to potential spot sell transactions in BTC (source: ARK 21Shares Bitcoin ETF prospectus filed with the SEC). Traders should monitor ARKB’s premium or discount to NAV during US trading hours as a gauge of primary-market stress and timing of related underlying BTC trades (source: ARK 21Shares Bitcoin ETF disclosures; Cboe BZX trading schedule).

According to @FarsideUK, the Bitwise US Bitcoin ETF recorded a daily net outflow of 115.6 million dollars on Oct 14, 2025. Source: twitter.com/FarsideUK/status/1977896805183426975 and farside.co.uk/btc/ @FarsideUK also states that 10% of profits from this product are allocated to Bitcoin developers. Source: twitter.com/FarsideUK/status/1977896805183426975 The data and full disclosures are available on Farside's US Bitcoin ETF flow tracker for verification and trading reference. Source: farside.co.uk/btc/

According to Lookonchain, Oct 13 ETF flows showed Bitcoin ETFs net -97 BTC (-$11.12M) while Ethereum ETFs net -34,603 ETH (-$142.22M), indicating day-of redemptions concentrated in ETH, source: Lookonchain. GBTC recorded 384 BTC outflows and currently holds 176,131 BTC ($20.12B), implying roughly 0.22% of its holdings redeemed based on the reported figures, source: Lookonchain. BlackRock reported 19,963 ETH outflows and currently holds 4,072,597 ETH ($16.74B), about 0.49% of holdings, with dollar outflows notably larger than BTC ETFs on the session, source: Lookonchain. These data highlight larger ETH ETF redemptions versus BTC ETFs on Oct 13, a key input for flow-sensitive trading strategies, source: Lookonchain.

According to @FarsideUK, Ark’s US spot Bitcoin ETF ARKB recorded a US$5.6 million net outflow on Oct 9, 2025. Source: Farside Investors tweet dated Oct 9, 2025 and Farside Investors Bitcoin ETF flow tracker at farside.co.uk/btc. Redemptions in US spot Bitcoin ETFs are conducted in cash, so net outflows typically require the fund to sell bitcoin to meet redemption proceeds, transmitting selling pressure from ETF shares to the underlying market. Source: ARK 21Shares Bitcoin ETF ARKB prospectus filed with the SEC and SEC spot Bitcoin ETF approval documentation. Traders monitor consecutive daily flows, ETF premiums or discounts versus NAV, and the BTC spot–CME futures basis to confirm whether ETF flow direction aligns with short-term momentum and liquidity shifts. Source: iShares education on ETF premiums and discounts and CME Group education on futures basis. For cross-issuer context, consolidated US Bitcoin ETF flow data and disclaimers are available for comparing ARKB’s activity with peers on the same date. Source: Farside Investors Bitcoin ETF flow tracker at farside.co.uk/btc.

According to the source, spot Bitcoin ETFs posted a net outflow of 1,790 BTC today while Ethereum ETFs registered net outflows of 50,655 ETH, indicating net redemptions across both baskets. source: X post dated Sep 27, 2025 Under U.S. SEC-described ETF creation/redemption mechanics, net outflows reflect authorized participant redemptions that can require selling or returning underlying assets, which typically signals weaker primary demand and can translate into near-term sell pressure when redemptions are cash-settled. source: U.S. SEC Investor Bulletin on Exchange-Traded Funds and SEC Exchange-Traded Products overview For trading, monitor U.S. spot volumes and ETF primary market activity into the close alongside CME BTC and ETH futures basis/term structure for dislocations that often accompany heavy flow days to gauge whether outflows are influencing price discovery and liquidity. source: CME Group education resources on futures term structure and basis

According to the source, there is a claim that Fidelity’s spot Ethereum ETF sold 15,110 ETH (~$63.4M) on Sept. 23, but this cannot be cited or verified without an official, non-crypto-media source. Please provide an issuer disclosure or market data source (e.g., Fidelity’s official ETF daily holdings page for FETH, the listing exchange’s daily basket/creation-redemption files, or a Reuters/Bloomberg report) so we can deliver a trading-oriented analysis with proper sourcing.

According to @FarsideUK, U.S. Ethereum ETFs recorded total net outflows of 167.3 million dollars on 2025-09-04, with fund flows as follows: ETHA plus 148.8 million, FETH minus 216.7 million, ETHW minus 45.7 million, TETH zero, ETHV minus 17.2 million, QETH minus 2.1 million, EZET minus 1.6 million, ETHE minus 26.4 million, and ETH minus 6.4 million, source: Farside Investors, farside.co.uk/eth. Seven of nine tracked ETH funds posted outflows, one recorded inflows ETHA, and one was flat TETH, indicating broad redemptions across the complex on the day, source: Farside Investors, farside.co.uk/eth. By contribution, FETH accounted for approximately 129.5 percent of the total net outflow while ETHA offset about 88.9 percent via inflows, based on the reported figures, source: Farside Investors, farside.co.uk/eth. Net outflows reflect ETF redemptions exceeding creations for that session, consistent with ETF mechanics described by the U.S. SEC, source: U.S. SEC investor education on ETFs.

According to @FarsideUK, Fidelity’s US Bitcoin ETF posted a daily net outflow of USD 246.9 million in the latest Bitcoin ETF Daily Flow update; the full dataset and disclaimers are available at farside.co.uk/btc. Per @FarsideUK’s flow tracker at farside.co.uk/btc, a negative daily flow denotes net redemptions exceeding creations for that issuer’s BTC exposure, a data point traders watch for near-term liquidity signals.

According to @FarsideUK, the Grayscale Ethereum ETF (ETH) posted a US$88 million net outflow on Aug 19, 2025, based on Farside Investors’ daily flow data (source: Farside Investors tweet https://twitter.com/FarsideUK/status/1957924101399470205 and data hub https://t.co/FppgUwAthD). This net outflow reflects that redemptions exceeded creations for the fund that day, consistent with the ETF framework where net flow equals creations minus redemptions (source: U.S. SEC Investor Bulletin on ETFs https://www.investor.gov/introduction-investing/investing-basics/investment-products/exchange-traded-funds-etfs). In cash redemption models, meeting redemptions involves selling underlying assets to raise cash, linking ETF flow direction to underlying market supply mechanics (source: U.S. SEC Investor Bulletin on ETFs https://www.investor.gov/introduction-investing/investing-basics/investment-products/exchange-traded-funds-etfs).

According to @FarsideUK, the Fidelity Ethereum ETF posted a record daily outflow, marking the largest single-day net redemption since the fund’s launch, as reported on Aug 16, 2025, source: Farside Investors (@FarsideUK) on X. The post did not disclose the outflow amount, but confirms a new outflow high for the ETF, source: Farside Investors (@FarsideUK) on X.

According to @FarsideUK, the daily flow for Grayscale ETHE was negative US$101.7 million on Aug 15, 2025, based on Farside Investors’ Ethereum ETF flow tracker (source: Farside Investors @FarsideUK). According to @FarsideUK, the figures are reported in US dollars and full dataset with disclaimers is available at farside.co.uk/eth (source: Farside Investors @FarsideUK).

According to @FarsideUK, ARK 21Shares Bitcoin ETF ARKB posted a US$23.9 million net outflow in the latest daily flow update on Aug 13, 2025, source Farside Investors at farside.co.uk/btc.