According to Watcher.Guru, Bitcoin BTC fell under $90,000 on Nov 18, 2025 Source: https://twitter.com/WatcherGuru/status/1990624058862342271. Round-number thresholds like $90,000 are widely treated as psychological levels that can concentrate orders and stop-losses and may amplify short-term volatility, which traders often incorporate into intraday risk management and breakout validation 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.