Long-term holders (LTH), defined by Glassnode as those holding coins or at least 155 days, could be the one taking profits, living up to their reputation of being smart traders or those that buy when prices are depressed and sell into a rising market. As of writing, LTHs hold only 500,000 BTC at a loss, which is a small fraction, considering they hold 14 million BTC as a cohort.