币界网报道：Bitcoin OTC balances have plummeted 72% since 2021, indicating significant institutional accumulation, according to CryptoQuant data. The reduction from 500,000 BTC to just 140,000 BTC suggests large investors are moving coins from over-the-counter desks to private custody or cold storage. Analysts interpret this as institutions holding long-term positions rather than short-term trading. The trend aligns with growing institutional adoption, including spot Bitcoin ETF approvals and corporate treasury allocations. Market observers note this supply squeeze could support prices as available liquid supply decreases. The OTC market, traditionally used for large block trades avoiding exchange slippage, now shows dwindling reserves amid sustained demand.