Supply and demand trading strategy: drawing and grading zones

What supply and demand zones are

A demand zone is an area where buying overwhelmed selling so decisively that price left in a hurry. A supply zone is the reverse. On a chart, both look the same: a short pause of small candles (the base), followed by a large move away. The trader's assumption is that the imbalance that drove price out of the zone may not be finished, so when price returns, buyers (at demand) or sellers (at supply) may step in again.

This sounds like support and resistance, and it is a close cousin, with two differences. First, a zone is an area with a top and a bottom, not a line. Second, a zone is judged by how price left it, not by how many times price touched it. To a support and resistance trader, a level touched five times is strong; to a supply and demand trader, a zone touched five times is nearly used up.

You will often hear that zones mark where banks and funds placed large orders. That may be true some of the time, but a retail chart cannot show it, so treat the story as a way of remembering the idea rather than a fact. The same logic, narrowed to a single candle, is the order block used in smart money concepts.

How to find and draw a zone

Zones come in four shapes, named for the move into the base and the move out of it:

• Drop-base-rally: price falls, pauses, then rallies hard. A demand zone, and the reversal kind.
• Rally-base-rally: price rises, pauses, then rises again. A demand zone inside an uptrend.
• Rally-base-drop: a supply zone, the reversal kind.
• Drop-base-drop: a supply zone inside a downtrend.

The continuation shapes (rally-base-rally and drop-base-drop) trade with the trend and tend to be the easier ones to trade. To draw a demand zone, take the base candles only. The bottom of the zone (the distal line) is the lowest wick in the base. The top (the proximal line) is the highest candle body in the base. For a supply zone, flip it: the highest wick is the distal line and the lowest body is the proximal line. Using bodies for the near edge keeps the zone tight, which keeps the stop small.

In the chart above, EUR/USD drops into a base of two small candles between 1.0790 and 1.0801 and leaves with two large bullish candles, a drop-base-rally. When price returns about twenty candles later, the buy limit at 1.0801 fills. The stop is at 1.0784, under the zone, and the target is the bottom of the supply zone left earlier at 1.0862 to 1.0874, where the rally duly stalls.

Grading a zone: which ones to trade

Most zones should be left alone. Score each one on five questions before placing an order, and only trade those that pass all five.

1. Departure. Did price leave the base with large candles that cover several times the base's height? A weak, overlapping departure means a weak zone.
2. Time at the base. One to three candles is good. A base of eight or ten candles is a range, and the orders that formed it have probably been filled.
3. Freshness. Has price been back into the zone since it formed? If yes, cross it off.
4. Trend. Is the daily chart moving in the trade's direction? Demand zones in a downtrend are where most supply and demand traders lose money.
5. Room. Is the nearest opposing zone at least twice the risk away? If a supply zone sits ten pips above your demand zone, there is nowhere for the trade to go.

Grading this way gives you far fewer trades than marking every base, which is the point. It also makes the strategy testable, because two people applying the same five questions should arrive at the same zones.

Entry, stop and target

Entry. The classic approach is a limit order at the proximal line, placed in advance and left alone (traders call it "set and forget"). It removes hesitation and fills when price touches the zone. The alternative is to wait for price to reach the zone, then enter when a lower timeframe candle closes in your direction, such as a bullish engulfing candle on the 1-hour chart. That skips zones price slices through, at the cost of a worse price and some missed trades.

Stop. Beyond the distal line, plus a buffer of the spread and a few pips. If price closes through the whole zone, the imbalance is gone and the reason for the trade with it.

Target. The proximal line of the next opposing zone: for a long from demand, the bottom of the nearest fresh supply zone above. That is where the next set of sellers is expected, and it is a logical place to take profit before the trade meets them. A 4-hour zone on EUR/USD is often 10 to 25 pips deep, so stops are tight and targets can sit several times the risk away. Size each trade with the position size calculator so the stop costs a fixed share of the account.

When supply and demand zones fail

Zones fail for three main reasons: they are traded against the trend, they are not fresh, or they were never strong in the first place. The second is the easiest to see on a chart. Each visit to a zone absorbs some of the buying or selling that held it, and the bounces get smaller until one visit goes straight through.

In this GBP/USD chart the demand zone between 1.2638 and 1.2655 holds three times, but each rally is lower than the last: the highs fall from 1.2712 to 1.2700, 1.2682 and 1.2668. A trader who bought the third test because "the zone has held three times" is using support and resistance thinking, and the zone breaks on the fourth visit. Under the supply and demand rules, only the first test was a trade.

Two other honest weaknesses. Zone drawing involves judgement, especially about where a base begins and ends, so write down your rules and draw zones before you look at what happened next. And news can run through any zone: a central bank decision can move price through a 20-pip zone in a second, and the stop fills at the next available price. Check the calendar before leaving limit orders in place for days.

How to backtest supply and demand trading

Zones are easy to draw in hindsight and hard to draw honestly, so the testing method matters more than usual.

1. Pick one market and the 4-hour chart, and scroll back a year.
2. Step forward candle by candle. Draw a zone only once the departure is complete, and grade it on the five questions at that moment.
3. Place the limit, stop and target, and record every outcome, including orders that never filled and zones that broke on the first touch.
4. Measure each trade in units of risk after the spread, and gather at least fifty trades.

Then compare set-and-forget entries with confirmation entries on the same zones, and continuation zones with reversal zones. Judge them on the average result per trade and the worst losing run, and check that run with the drawdown calculator. The academy lesson on supply and demand zones versus order blocks explains how the two methods differ in detail.