How to read support and resistance
Support and resistance are price areas where one side has repeatedly overwhelmed the other — support where declines keep stopping, resistance where rallies keep stopping. They are zones rather than lines, and a level is only worth marking if you can point at the specific touches that made it one.
A level needs evidence, not a straight edge
Anyone can draw a horizontal line that touches some candles. The test is whether you can say what happened there: how many times price approached, whether it was rejected sharply or drifted through, whether volume expanded on the touch.
If the only argument for a level is that a line fits, it is not a level — it is a line. This is the reason ChartLens requires a piece of visual evidence for every level it reports, and it is the constraint that stops the model drawing plausible-looking lines anywhere on the chart.
Zones, not lines
Real levels are messy. Price wicks through by half a percent, closes back, wicks through the other way a week later. Marking a zone that spans the wicks and the closes describes what happened; marking a single line to the tick invites you to place a stop inside the noise.
What makes one level more important than another
- What happened when it broke last time. A level that produced a sharp move when it gave way matters more than one price wandered across.
- How recent it is. Levels decay. A ceiling from three years ago matters less than one from last month, because most participants have changed.
- Whether it lines up with something else. A prior high that is also a range boundary and a round number is one level with three reasons.
- Timeframe. A daily level outranks a 15-minute level. If you are trading the 15-minute chart, you still need to know where the daily ones are, because that is what will stop your move.
The flip
Broken support tends to act as resistance, and vice versa. The mechanism is ordinary human behaviour rather than anything mystical: people who bought at the old support are now underwater, and a meaningful number of them will sell the moment price returns to their entry so they can get out flat. That supply is what turns the old floor into a ceiling.
Retests of a flipped level are among the higher-quality entries available, because the invalidation is unusually clean — if price reclaims the level convincingly, the flip did not hold and you are wrong immediately.
How many levels to mark
Two to four on the chart you are actually trading. A chart with fifteen lines on it does not contain more information; it contains a level near every price, which means none of them constrain anything.
ChartLens caps itself at four for the same reason, and every one it reports comes with the evidence that justified it. Related reading: how ranges form between two levels and where to put the stop once you have one.
People also ask
What is support and resistance?
Price areas where buying or selling has repeatedly overwhelmed the other side. Support is where declines have stopped; resistance is where rallies have stopped. They are zones, not lines, and they exist because orders sit there.
How many touches make a valid level?
Two is a level, three is a level people are watching. More touches are not automatically better — a level tested five times is one being worn down as much as defended, and it often breaks on the next test.
Why does support become resistance after it breaks?
Because the people who bought there are now underwater and many will sell at break-even to get out. The level flips from a place people bought to a place people are waiting to exit.
Should I draw levels on wicks or on bodies?
Neither exclusively — draw a zone that covers both. Wicks show where price was rejected, bodies show where it accepted value. A level drawn as a single line is precise about something that was never precise.
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Written by The ChartLens team. Last updated .