Supply Zone

Supply zones complete the supply-and-demand trading framework's bearish side. The methodology and identification approach mirrors demand zones with direction reversed; key concepts and limitations are the same.

How to identify supply zones:

• **Visual pattern**: price spent time in tight horizontal consolidation, then broke out sharply downward in a sequence of strong bearish bars • **The zone**: the consolidation range marks the supply zone — typically from the highest wick to the lowest body close before the breakdown began • **Time decay and strength signals**: same as demand zones; recent zones more reliable than older ones; zones producing strong initial breakdowns are more credible than weak ones

How supply zones are used:

• **Mean-reversion shorts**: when price returns to a previously-identified supply zone, expect downward reversal. Enter short positions at the zone with stops just above it • **Resistance levels**: supply zones serve as horizontal resistance for swing-trading strategies; positions are sized larger as price approaches the zone • **Multi-timeframe analysis**: H4 and D1 supply zones carry more weight than intraday zones • **Confluence with other indicators**: supply zones are stronger when they coincide with Fibonacci retracements, moving averages, or other technical levels

For EA buyer evaluation: similar to demand zones, the question is how the EA algorithmically identifies supply zones. Vendors operationalising supply-and-demand methodology should disclose their identification algorithm; vendors using the terminology without specific algorithmic definition are typically marketing-driven rather than methodology-driven.