CryptoQuant analysts report that Bitcoin whales are actively rotating positions between $77,000 and $81,000, with significant movements observed on May 18 when over 8,000 BTC were transferred to exchanges, indicating heightened short-term selling pressure. Analyst Ali Martinez highlights $77,800 as a critical breakout resistance level for Bitcoin, which is currently trading around $77,822, recovering 1.4% in the past 24 hours. Whale activity suggests a pattern of accumulation near local lows followed by selling into strength. Between May 1 and May 4, whales accumulated BTC, supporting a rally to a local high of $82,196. However, as Bitcoin's price climbed, whales began moving coins back to exchanges, signaling potential profit-taking. Exchange reserves have increased to nearly 2.696 million BTC, the highest this month, suggesting continued selling pressure.