Bitcoin retests $82,700 resistance after $57M 700-BTC whale long and ETF inflows

On May 15, Bitcoin rebounded 1.55% to $80,900 as trading volume rose 25% to $44.82 billion. A whale opened a 700 BTC long worth $57 million with 10x leverage, while U.S. spot BTC ETFs posted net inflows of over $131.31 million. Traders are watching $82,700 as the key level, with a daily close above it seen as the trigger for a move toward $89,500.