According to @cryptojelleNL on Twitter, BlackRock experienced its largest-ever Bitcoin ETF outflow, selling approximately $430.83 million worth of BTC on June 17, 2024 (source: @cryptojelleNL, 2024-06-18). Despite this significant sell-off, BlackRock simultaneously acquired nearly $70 million worth of Ethereum, indicating a notable shift in institutional demand from Bitcoin to Ethereum. This move suggests evolving sentiment among major asset managers, potentially impacting short-term BTC support and signaling possible upside momentum for ETH. Traders should monitor Bitcoin's support levels and Ethereum's potential for increased institutional inflows.