Bitcoin reserves on centralized exchanges have dropped to 2.7 million BTC, marking the lowest level since November 2018, according to CryptoQuant. This decline in exchange-held Bitcoin comes as the cryptocurrency's price hovers above $70,000, nearing all-time highs. The reduction in exchange reserves, which peaked at over 3.5 million BTC during the 2020-2022 bull cycles, follows a series of industry crises in late 2022. The trend has continued through 2023 and into 2026, driven by the success of U.S. spot Bitcoin ETFs and increased corporate accumulation. Institutional investors and corporate treasuries, such as Strategy Inc., are acquiring significant amounts of Bitcoin, contributing to a potential liquidity crunch and setting the stage for a possible supply shock.