Bitcoin whale transfers on December 25 impacted sentiment: BlackRock deposited 2,292 BTC ($199.8 million) to Coinbase, while an 8-year dormant whale sent 400 BTC ($34.92 million) to OKX. Spot Bitcoin ETFs saw five consecutive outflows, per SoSoValue, amid price consolidation near $87,700. BlackRock's large BTC deposit to Coinbase signals potential selling pressure from institutional holders. [...]