According to @StockMKTNewz, Bitcoin (BTC) dropped back under $90,000 last night, marking a breach of the $90K psychological threshold for crypto traders (source: @StockMKTNewz on X, Nov 18, 2025). Round-number levels like $90,000 often cluster orders and act as psychological support/resistance, which can magnify price moves once breached (source: Harris, Journal of Finance 1991; Osler, Journal of Finance 2003). Traders commonly use such figures as intraday pivots for momentum continuation or mean-reversion setups, with risk framed around liquidity concentrations near the round number (source: Osler, Journal of Finance 2003).