A support level is a price area where buying interest has historically been strong enough to halt or reverse a decline. Visually it shows up as the floor of a range, a prior swing low that price tested and bounced from, or a moving average that price has respected repeatedly.
Support is not a single line — it is a zone. The cleaner the prior reaction (sharp bounce, high volume, multiple touches), the more confident traders are placing trades around the level.
When a support level breaks (a clean close below it), it often flips polarity and becomes resistance on the way back up. Re-tests of broken support are common short-side entries.
Example
BTC bounces from 48,000 three times over two weeks. 48,000 is acting as support. A close below 48,000 would invalidate that read and flip it to resistance.
How Noon Barbari uses Support
Every concept here is implemented in the platform. Open the relevant docs or tool to see it in action.
Build S/R-based rules →Related terms
- Market structure
Resistance
A price level where rising supply outpaces demand, halting or reversing rallies.
- Market structure
Swing low
A local trough: a bar whose low is lower than the N bars on each side.
- Market structure
Range
Sideways price action bounded by a definable support and resistance.
- Market structure
Trend
A persistent directional drift in price — up, down, or sideways.