Trading term
What is Breakdown?
A breakdown is when price falls decisively through a support level it had been holding above — the bearish mirror of a breakout. It signals sellers have overwhelmed the buyers defending support, and often triggers a fast move lower as stops and new sellers pile in.
For a while a support level holds: every time price dips to it, buyers step in and it bounces. A breakdown is the moment that floor gives way — price closes decisively below the level, usually on rising volume. The buyers defending it are gone, and the level that acted as support now tends to flip into resistance overhead. It's the same mechanics as a breakout, pointed down.
Breakdowns can be violent because they trigger a cascade: traders who bought at 'support' now sit on losses and sell, stop-loss orders resting below the level fire automatically, and fresh short-sellers press the move. As with breakouts, beware the fake — a brief poke below support that snaps back (a 'bear trap') punishes those who chased. Confirmation — a strong close below, higher volume, or a failed retest of the level as new resistance — separates a real breakdown from a shakeout.
Price holds $50 support, then breaks down through it on a strong candle. It bounces back to retest $50 — now resistance — fails, and falls to new lows.
For example
A stock holds $50 support for weeks, then closes at $47 on heavy volume — a breakdown. It later bounces back to $50, fails there (old support now resistance), and rolls over to new lows, confirming the move.
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Explore Premium →Why it matters to you
Breakdowns mark where a quiet, range-bound or supported market turns into a decline — often the start of the fastest, most emotional moves, since fear moves faster than greed. Recognising a genuine breakdown (versus a bear trap) is what lets a trader exit a long in time, or avoid buying a 'dip' that's actually the floor falling out.
⚠ Beware the bear trap
The mirror of the breakout fakeout: price stabs just below support to trigger stops and tempt short-sellers, then reverses sharply back up — a 'bear trap.' A breakdown on weak volume, or one that can't hold a close below the level, is suspect. Shorting the first poke below support without confirmation is how bear traps get sprung.