Support and resistance

Support and resistance are the price areas where the market has paused or turned before. They matter because many traders watch the same areas, place orders around them and react when price returns. Learning to draw them sensibly is one of the most practical skills in technical analysis.

What support and resistance are

• Support is a price area where falling prices have previously stopped and turned up. Buying interest outweighed selling there.
• Resistance is a price area where rising prices have previously stopped and turned down. Selling interest outweighed buying there.

They work partly because of memory and partly because of orders. Traders who missed a move may place buy orders near old support. Traders who bought at a level and saw it go against them may sell to get out at break-even when price returns.

Zones, not lines

Price rarely turns at exactly the same number twice. One reaction might stop at 1.0985, the next at 1.0992, the next at 1.1000. Drawing a single thin line at one of those numbers will make the level look broken when it is not.

Instead, mark a zone: a band covering the cluster of reactions. In this example, the zone is 1.0980 to 1.1000, 20 pips wide. Picture a shaded strip across the chart rather than a pencil line.

How wide should a zone be? It depends on the pair and timeframe. A zone on a daily chart is naturally wider than one on a 15-minute chart. A useful guide is to cover the bodies and most of the wicks of the candles that reacted there, without making the band so wide it means nothing.

What makes a level stronger

• Several clear reactions, not just one.
• Strong moves away from the level, showing real interest there.
• Higher timeframe: a daily level usually matters more than a five-minute level.
• Recent reactions, rather than ones from years ago.

Each test can also use up some of the orders waiting at a level. A zone that has been tested many times in quick succession may be weakening rather than strengthening.

Role reversal

When price breaks decisively through a level, that level often swaps roles:

• Broken resistance can become support when price pulls back to it.
• Broken support can become resistance when price rallies back to it.

For example, suppose EUR/USD has been capped around 1.1200 for weeks. It then breaks above and closes at 1.1260. If it later dips back to around 1.1200 and holds, the old ceiling is acting as a floor. Traders call this a retest.

Role reversal is a tendency, not a rule. Sometimes price slices straight back through the level.

Round numbers

Prices ending in 00, such as 1.1000 or 1.2000, are known as round numbers or big figures. Half-figures ending in 50, such as 1.1050, matter to a lesser degree. They attract attention because people naturally set targets, stops and orders at tidy prices, and because some larger orders cluster around them.

Round numbers are best used as a supporting reason, not the only reason. A round number that coincides with an existing support zone is more interesting than a round number in isolation.

Worked example: planning a trade at resistance

EUR/USD has a resistance zone at 1.1180 to 1.1200 and a support zone below at 1.1080 to 1.1095 (example prices). Price rallies into the resistance zone and stalls. You are considering a short trade.

• Entry: sell at 1.1175, as price turns down just below the zone
• Stop-loss: 15 pips above the top of the zone, at 1.1215
• Stop distance: 1.1215 − 1.1175 = 0.0040 = 40 pips
• Target: just above the top of the support zone, at 1.1095
• Target distance: 1.1175 − 1.1095 = 0.0080 = 80 pips
• Reward-to-risk: 80 ÷ 40 = 2:1

The stop sits beyond the whole zone, not inside it, so a brief poke into the zone does not take you out. The target sits in front of the next zone, because price may react there before reaching your number.

Sizing it: with a 5,000 USD account risking 1%, risk is 50 USD, so position size is 50 ÷ (40 × 10) = 0.125 lots, which you would round down to 0.12 lots. Check: 0.12 lots is 1.20 USD per pip, and 40 × 1.20 = 48 USD, within the limit.

Common mistakes

• Drawing so many levels that every price is near one.
• Treating a single wick as a major level.
• Placing stops exactly at the level, where many other stops sit.
• Ignoring news: scheduled releases can push straight through any level.

Key takeaways

• Support and resistance are areas where price has turned before; mark them as zones, not thin lines.
• Levels with several strong reactions on higher timeframes usually matter more.
• Broken resistance can become support and broken support can become resistance, but not always.
• Round numbers add weight to an existing zone; place stops beyond the zone, not inside it.