A movement or tendency that goes against the prevailing trend or direction, especially in markets or society.
From counter- + trend. Trend comes from Old English trendan meaning 'to turn.' Countertrend is a modern term from economics and social analysis.
Stock market countertrends can make or break fortunes—traders who spot when a bull market is about to reverse with a countertrend can profit enormously, but timing the reversal is notoriously difficult.
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