Bitcoin's market is experiencing signs of fatigue as $18 billion in profits were realized on October 15, marking the largest single-day profit-taking since early summer. Long-term holders, those with assets held for over three months, were the primary sellers, with their profit-taking activity six times higher than that of short-term holders. Despite maintaining profitability during the recent selloff, these holders are de-risking by exiting positions ahead of a potential market rebound. The market has seen a cumulative decline of over 10% since early October, with Bitcoin's price currently below $110,000. Realized losses are also on the rise, and if they continue to increase alongside profit-taking, it could indicate broader market exhaustion.