According to @lookonchain, 10 Bitcoin ETFs recorded a net flow of -4,970 BTC valued at -$543.59M on Oct 31, 2025, indicating broad-based redemptions across BTC funds, source: @lookonchain on X, Oct 31, 2025. According to @lookonchain, BlackRock saw outflows of 2,724 BTC ($297.93M) and now holds 802,811 BTC ($87.81B), source: @lookonchain on X, Oct 31, 2025. According to @lookonchain, 9 Ethereum ETFs posted a net flow of -54,799 ETH (-$210.43M), while BlackRock’s ETH outflow was 31,754 ETH ($121.94M) with current holdings at 4,002,725 ETH ($15.37B), source: @lookonchain on X, Oct 31, 2025. Combined BTC and ETH ETF net outflows totaled $754.02M, with BlackRock representing 54.8% of BTC and 58.0% of ETH outflows; BlackRock’s single-day outflows equate to 0.34% of its BTC and 0.79% of its ETH holdings, calculated from @lookonchain data on X, Oct 31, 2025. In ETF mechanics, net outflows reflect redemptions where authorized participants exchange ETF shares for underlying assets, a process that can transmit selling pressure to the underlying during redemptions and is relevant for intraday liquidity and basis trading, source: U.S. SEC Investor Bulletin titled Exchange-Traded Funds.