Before moving averages, indicators, or patterns, every chart reader starts with support and resistance. Here's how to identify real levels, why they form, and how to trade around them.
Support is a price level where buying pressure has repeatedly stepped in to stop a decline. Resistance is a price level where selling pressure has repeatedly capped an advance. Together they form the floor and ceiling of a stock's trading range — and identifying them correctly is arguably the single most useful skill in technical analysis.
Support and resistance form because market participants remember prior turning points. Traders who bought near a low and watched price bounce will often buy again if price revisits that same zone; traders who missed selling at a prior high will often sell if price returns there. This collective memory turns a historical price level into a self-reinforcing zone, at least until it's broken.
One of the most reliable patterns in technical analysis is role reversal: once resistance is decisively broken, it frequently becomes support on the next pullback, and vice versa. This happens because the same crowd psychology that defended the level before now works in the opposite direction — buyers who regret selling too early at resistance often become buyers on the retest as support.
Two common approaches: buying near support with a stop just below it (betting the level holds), or buying a confirmed breakout above resistance with a stop back below the broken level (betting the level, once cleared, won't be revisited soon). Neither approach works without a defined stop — support and resistance are probabilities, not guarantees, and every level eventually fails.
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