What you will learn
- Define support and resistance and explain what happens at each
- Understand why these levels form, from psychology and memory
- Explain role reversal, where broken resistance becomes support and vice versa
- Treat support and resistance as zones rather than exact lines
If one concept underlies almost all of technical analysis, it is support and resistance. These are price levels where the balance between buyers and sellers has tended to shift, and they form the scaffolding on which trends, patterns, and trading decisions are built. They also connect straight to the candles you just learned, since levels are where long wicks and rejections cluster.
Support and resistance for beginners (Rayner Teo)
A reputable, beginner-focused explanation of levels where price tends to reverse. Watch how he treats them as zones, not exact prices.
The two levels
- Support is a price level where buying interest has tended to be strong enough to halt a decline. As price falls toward support, buyers step in, demand overcomes supply, and the fall stalls or reverses.
- Resistance is the opposite: a price level where selling interest has tended to be strong enough to halt a rise. As price climbs toward resistance, sellers emerge, supply overcomes demand, and the rise stalls or reverses.
Key terms
- Support
- A price level where buying tends to halt a decline. It acts like a floor.
- Resistance
- A price level where selling tends to halt a rise. It acts like a ceiling.
- Role reversal
- When a broken resistance becomes new support, or broken support becomes new resistance.
- Breakout
- When price pushes decisively through a level, watched as a possible new move, especially on strong volume.
Why these levels form
Support and resistance are ultimately about psychology and memory. Levels often form at prior highs and lows, where many traders previously bought or sold and remember doing so. Round numbers tend to act as levels because people naturally place orders at them. A level where lots of buying or selling happened before becomes a place where participants expect it to happen again, and that expectation can make it so. This is the same behavioral, partly self-fulfilling mechanism from the first lesson.
Support or resistance?
A stock has climbed to 80 several times over the past year and each time it stalled and fell back. Right now it is rising toward 80 again. Is 80 acting as support or resistance, and what would you expect near it?
Because 80 has repeatedly stopped the price from rising, it is acting as resistance. Traders watch for a stall or reversal near it, or a breakout if it clears 80 convincingly on strong volume.Role reversal
One of the most useful ideas in charting is that support and resistance can swap roles. When price breaks decisively above a resistance level, that old resistance often becomes new support, because traders who watched the level now see it as a floor. Likewise, broken support frequently becomes new resistance. This role reversal is a recurring feature of how markets behave around significant levels.
Support is where buyers have shown up before. Resistance is where sellers have. Markets remember these places, and that memory shapes behavior.
How to identify support and resistance (Rayner Teo)
A practical method for spotting levels on a chart. Watch how prior highs, prior lows, and round numbers become the levels to mark.
Strength, breakouts, and zones
The more times a level is tested and holds, the more significant traders consider it, though there is a paradox here. Each test also uses up some of the orders defending the level, so a heavily tested level can eventually break. When price pushes through a level, that is a breakout, and breakouts are watched as possible signals that a new move is beginning, especially with strong volume. Finally, remember that support and resistance are zones, not razor-thin lines. Treating them as approximate areas rather than exact prices is more realistic and more useful.
Match the behavior at a level
Pair each situation with what it describes.
Why zones, not lines?
Explain in a sentence or two why it is more realistic to treat support and resistance as zones rather than as one exact price.
Write an answer before comparing it with the model response.
Model answer
Prices are set by many traders placing orders at slightly different levels, so buying or selling interest clusters in a range rather than at one exact number. Expecting price to reverse at a precise line leads to false conclusions when it overshoots slightly. Treating the level as a zone accepts that reality and makes the tool more useful, since it is about where interest concentrates, not a razor-thin price.
Support and resistance are the levels where price tends to turn. When those turns line up in a consistent direction, they form a trend, which is the next lesson.