Support and resistance
Also called: support level · resistance level · S/R
Definition
Support and resistance are price zones where an asset has repeatedly stopped falling (support) or stopped rising (resistance), because buying or selling interest tends to cluster there.
This entry is shown in English.
How Support and resistance works
Support forms where buyers have stepped in before, so price tends to bounce. Resistance forms where sellers have taken profit or opened shorts before, so price tends to stall. These levels often line up with previous highs and lows, round numbers like 50,000 or 100,000, and areas where a lot of volume traded.
Think of them as zones, not exact lines. Price often pokes slightly through a level before reversing. When a level finally breaks with strong volume, it can flip roles: old resistance becomes new support, and old support becomes new resistance.
Traders use these zones to plan entries, stop-losses and take-profit targets. A common approach is to place a stop-loss a little beyond a support zone rather than exactly on it, because many traders place stops at the same obvious level and those orders can be swept in a quick move.
Example
Suppose SOL has bounced from around 140 USDT three times in two months and failed to break 175 USDT twice. You buy near 142 with a stop-loss at 134, just under the support zone, and a target at 172, just under resistance. Your risk is 8 USDT per coin and your potential gain is 30 USDT. If SOL later closes several days above 175, that old ceiling may start to act as support.
Common mistakes
- Treating a support level as a guarantee that price cannot fall further.
- Placing a stop-loss exactly on an obvious round number where many other stops sit.
- Drawing dozens of lines on a chart until every price looks like a level.
Learn and practise
FAQ
What happens when support breaks?
Price often moves quickly lower as stop-losses trigger, and the broken support can later act as resistance if price comes back up to it.
Is support and resistance reliable in crypto?
It is a useful planning tool, not a prediction. Levels fail often, especially in fast markets, so always combine them with a stop-loss and sensible position size.