据 Watcher.Guru 报道，比特币 BTC 于2025年11月18日跌破9万美元 Source: https://twitter.com/WatcherGuru/status/1990624058862342271。9万美元等整数关口通常被视为心理位，容易形成挂单与止损密集并放大短线波动，交易者常据此进行盘中风险控制与突破有效性判断 Source: Larry Harris Trading and Exchanges 2003 https://global.oup.com/academic/product/trading-and-exchanges-9780195144703; Carol Osler Stop-Loss Orders and Price Dynamics Journal of Finance 2003 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=380001; John J. Murphy Technical Analysis of the Financial Markets 1999 https://www.amazon.com/dp/0735200661。