Supply and demand zones vs order blocks

Supply and demand traders draw zones. Smart money traders draw order blocks. On the chart they often sit in the same place, so beginners ask: is an order block just a supply or demand zone with a new name? Partly. They share the same idea, but they are drawn by different rules, and the rules change where the entry and the stop go.

Supply and demand zones

A demand zone is a price area where buyers were strong enough to push price away quickly. A supply zone is the mirror for sellers. The usual way to draw one:

Find a strong move away from an area (a "rally" or a "drop").
Find the base before it: one or more small candles where price paused.
Draw the zone around the whole base, from its lowest low to its highest body (or high) for demand, mirror for supply.
The patterns are named by what came before and after the base: drop-base-rally and rally-base-rally (demand), rally-base-drop and drop-base-drop (supply).
A fresh zone, one price has not returned to, is treated as stronger than a tested one.

Order blocks, by the rules our engine uses

An order block is narrower. In the ICC Charts engine:

A bullish order block is the last down-close candle at, or just before (up to 5 candles back), the low of a leg that then breaks structure upward with a body close. Bearish mirrors it.
No break of structure, no order block. The block is only known once the breaking candle closes.
The mean threshold is 50 % of the block candle's body.
The block is mitigated when price first trades back into it; it loses respect when a candle closes beyond the mean threshold, and it fails when a candle closes beyond its far end.
A failed block becomes a breaker if its leg had swept a prior swing (taken liquidity), otherwise a mitigation block.

Our engine does not draw supply and demand zones. Its closest relatives are order blocks, rejection blocks (long wicks at swing points, from the body to the wick tip) and fair value gaps. In our VSA models "no supply" and "no demand" mean something else again: a low-volume test bar, a volume idea, not a zone.

The main differences

Size: a demand zone covers the whole base; an order block is usually one candle, so it is tighter.
Condition: a supply or demand zone needs a strong move; an order block also needs a break of structure.
Liquidity: SMC adds whether the move first swept a high or low; zone traders mostly look at freshness and the strength of the move away.
Levels inside: an order block has a mean threshold and clear "failed" rule; a zone is usually treated as one area.

A gold example with numbers

XAUUSD, 1-hour chart. Gold drops to 3,960, moves sideways for three small candles between 3,956 and 3,968, then rallies to 4,000 and closes above the last swing high at 3,985.

A demand zone trader marks the whole base: 3,956 to 3,968, $12 tall. Entry at the top, 3,968, stop under it at 3,954: $14 of risk per ounce.
An order block trader marks only the last down-close candle of the base: high 3,964, low 3,958, body 3,963 to 3,959, so the mean threshold is 3,961. Entry at 3,964, stop at 3,956: $8 of risk.

To risk $100 with 1 lot = 100 ounces, the zone trade allows about 0.07 lot ($14 × 100 × 0.07 = $98) and the order block trade 0.12 lot ($8 × 100 × 0.12 = $96). The tighter block gives a bigger position and a better reward-to-risk, but price misses it more often, or runs through it. Neither choice is free. Check your numbers in the lot size calculator and the risk-reward calculator.

Which one to use

Pick one method and its rules, and test it. Many traders end up with a mix: they use the order block for the entry and stop, and the wider zone as the area where they start watching. What matters more than the name is the context: is the zone in a discount for a buy, did price just sweep liquidity, is it the right session?

Common mistakes

Drawing a zone at every pause, even where price never left with strength.
Marking an order block where no structure broke: then it is just a candle.
Trading a zone that price has already tested several times; each test uses up orders.
Stops exactly at the zone edge, where everyone else's stops are.
Trading against the higher time frame trend only because "it is a fresh zone".

Practise it

The terminal's Order Blocks layer draws blocks, breakers and mitigation blocks by the rules above (how it works). Train your eye in the free Chart Challenge order block mode, and read the full order blocks and breaker blocks guide.

Education only. ICC Charts is not affiliated with Inner Circle Trader (Michael J. Huddleston); these ideas are explained in our own words. Zones and blocks fail often. Trading involves risk; practise on a demo account first.

Try it on a live chart

Open ICC Charts in your browser, free, with the ICT and VSA layers and the model scanner. Or practise on past charts in the free Chart Challenge game.

Open the terminal → Practise spotting order blocks

Supply and demand zones vs order blocks