Support and Resistance — Understanding Price Charts

What Support and Resistance Are

Support is a price area where buying pressure has historically been strong enough to stop or reverse a decline. Resistance is a price area where selling pressure has historically been strong enough to stop or reverse a rally.

These levels form because many traders remember prior turning points and tend to place orders around similar price areas, which can create a self-reinforcing effect.

[Read the lesson: Support and Resistance](/learn-to-trade/understanding-price-charts/support-and-resistance)

Zones, Not Exact Lines

Although support and resistance are often drawn as single lines on a chart, it's more accurate to think of them as zones or areas. Price often pokes slightly above or below a level before reversing, so experienced traders usually give these levels a bit of room rather than expecting a reaction at one exact price.

**Identifying a Support Zone:** Suppose USD/JPY bounces upward from 148.20 on one occasion, from 148.35 on another occasion a few weeks later, and from 148.10 a third time after that. Rather than marking support at exactly 148.20, a trader might draw a support zone roughly spanning 148.10 to 148.35, reflecting that the 'floor' has varied slightly each time.

[Read the lesson: Support and Resistance](/learn-to-trade/understanding-price-charts/support-and-resistance)

Role Reversal: Old Resistance Becomes New Support

A widely observed pattern is that once price breaks convincingly through a resistance level, that same level can later act as support if price returns to it — and vice versa for a broken support level becoming new resistance.

This happens because traders' expectations shift once a level is broken: those who missed buying below resistance may now view a pullback to that former resistance as a new buying opportunity.

[Read the lesson: Support and Resistance](/learn-to-trade/understanding-price-charts/support-and-resistance)

Why These Levels Aren't Guarantees

Support and resistance describe where reactions have happened before and where they are more likely — not certain — to happen again. Price does eventually break through most levels given enough time and pressure, so support and resistance should be treated as probability-shifting tools, not guaranteed walls.

[Read the lesson: Support and Resistance](/learn-to-trade/understanding-price-charts/support-and-resistance)