According to @caprioleio, 165,000 BTC were withdrawn from Coinbase over the weekend and the cause has not been disclosed (source: @caprioleio). According to @caprioleio, the last comparable plunge in Coinbase Bitcoin balances occurred just after the FTX collapse, when BTC traded near 16,000 dollars (source: @caprioleio). Large net outflows reduce on-exchange balances and reflect coins moving to self-custody, a dynamic that has been documented to coincide with tighter immediate spot liquidity on exchanges (sources: Glassnode; Kaiko Research). Kaiko Research has reported that thinner order book depth increases price impact per trade, which traders may consider when assessing short-term BTC volatility following major exchange outflows (source: Kaiko Research).