Supply and Demand Zones
Quick Definition
Price areas on a chart where significant buying (demand) or selling (supply) previously occurred, expected to cause price reactions when revisited.
Key Takeaways
- Supply zones are areas where selling previously overwhelmed buying; demand zones are where buying overwhelmed selling
- Zones are drawn as ranges (not single lines) based on the origin of strong price moves
- Fresh (untested) zones are considered stronger than zones that have been revisited
- The concept is rooted in institutional order flow — large orders can't be filled at once
What Is Supply and Demand Zones?
Supply and demand zones are areas on a price chart where a significant imbalance between buyers and sellers previously caused a strong price move. A demand zone is a price area where aggressive buying overwhelmed selling, causing price to rally sharply — when price returns to this zone, the remaining unfilled buy orders are expected to provide support. A supply zone is the opposite — an area where selling overwhelmed buying, causing price to drop sharply, and is expected to act as resistance when revisited. Unlike traditional support and resistance lines, supply and demand zones are drawn as rectangular areas (ranges) rather than single price levels, typically using the base of the initial move as the zone boundaries. The concept comes from institutional order flow theory: large institutions cannot fill their entire orders at once, so unfilled orders remain at these price levels. Zone quality is assessed by factors including the strength of the initial move away from the zone, the time price spent in the zone, and whether the zone has been previously tested (fresh zones are considered stronger).
Supply and Demand Zones Example
- 1A stock drops sharply from $50 to $45 in one candle — the $49-$50 area becomes a supply zone. When price rallies back to $49.50, it reverses down again as remaining sell orders are triggered.
- 2After a strong rally from a $30 demand zone, price pulls back to $31. Traders buy at the zone expecting the remaining institutional buy orders to push price higher again.
Related Terms
Support and Resistance
Key price levels where buying pressure (support) prevents further decline or selling pressure (resistance) prevents further advance.
Order Block
A price zone where institutional traders placed large orders, identified by the last opposing candle before a strong directional move, used in smart money trading concepts.
Breakout
A price movement where a security moves above a resistance level or below a support level on increased volume, often signaling the start of a new trend.
Pullback
A temporary decline in price within an ongoing uptrend, typically to a support level or moving average, offering a buying opportunity.
Volume Profile
A charting tool that displays the total volume traded at each price level over a specified period, revealing areas of high and low trading activity.
Moving Average
A calculation that averages a security's price over a specific number of periods, smoothing price data to identify trends.
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