Support and resistance are the most widely watched ideas in technical analysis, which is exactly why they matter: enough traders act on them to make them partly self fulfilling. The common mistake is drawing them as precise lines rather than zones.
Real markets fill orders across a range of prices, so reversals rarely happen at an exact figure. A zone captures the cluster of prices where buyers or sellers repeatedly stepped in.
Drawing a band instead of a hairline keeps you from being shaken out by a small overshoot that was always within the noise.
When price breaks decisively through resistance, that old ceiling often becomes a floor on a retest, and vice versa. This flip is one of the more reliable behaviours around these zones.
A clean break followed by a hold of the flipped level is a common continuation setup.
Support and resistance are stronger when they line up with round numbers, prior highs and lows, or a moving average. Confluence raises the odds that a zone matters.
Never trade a zone in isolation; use it to frame risk and let other evidence confirm the idea.
Detrás de cada vela hay compradores y vendedores. Pensar en términos de quién tiene el control añade profundidad a cualquier gráfico.
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