What is the difference between an order block and a support zone?

Support is a general level where price has stopped many times; an OB is a zone based on one specific candle that launched a strong move. In essence the concepts are close.

Which timeframe do order blocks work on?

They can be drawn on any timeframe, but higher-timeframe OBs (4-hour, daily) are usually stronger. Lower timeframes are noisy.

Analysis

What is Order block?

In short

The zone of the last opposite candle before a strong move (the last red candle before a rally). Large orders are expected to show up again when price returns.

Also known as: ob

An order block (OB) is the zone of the last opposite-colored candle before a strong move. The last red candle before a rally is a bullish OB; the last green candle before a sell-off is a bearish OB.

The idea

A strong move often starts with large players accumulating size. Part of their orders may remain unfilled, so when price returns to the zone, demand (or supply) is expected to show up again. In practice an OB is a more precise, candle-level version of classic support and resistance.

Signs of a quality OB

The move away from it is strong and sharp, often leaving an FVG;
The move broke structure with a BOS;
Price hasn't returned to it yet (a "fresh" zone) — a zone that has already been tested weakens (mitigation);
It aligns with the higher-timeframe trend.

How it is drawn

The zone is usually marked from the candle's low to its high, or by its body only. The entry goes near the top of the zone and the stop-loss beyond the far side.

Limitations

Not every red candle is an OB — there are many candidates on a chart, so selection is subjective. When an OB fails it often flips roles (breaker block).

Bullish order block

The last red candle before a strong rally is the order block. When price later returns to that zone, buyers are expected to step in again. A probability, not a promise.

A complete order block: impulse, FVG, BOS

After the last red candle ($48.6–49.9) came a strong impulse: it left an FVG ($49.9–50.8) and broke the $52 high (BOS). The pullback filled the FVG, tagged the OB (down to $49.6), and $54.0 was taken out.

Example

A fictional stock trades around $50. The last red candle before the rally: open $50.40, close $49.60, high $50.60, low $49.30. Price then rallies sharply to $56, breaking the prior $53 high (BOS).

OB zone: $49.30–$50.60
Entry (limit): $50.40
Stop: $49.10 (below the zone)
Target: $56

Risk: $50.40 − $49.10 = $1.30. Reward: $56 − $50.40 = $5.60. R:R = 5.60 ÷ 1.30 ≈ 1:4.3. If price never returns to the zone — no trade; if it returns and closes through the zone — stopped out.

Mistakes and tips

Only take OBs that preceded a strong move and a BOS — otherwise your chart fills up with "zones".
An OB tested a second or third time is less reliable.
Before entering, size the position from the stop distance.

Frequently asked questions

What is the difference between an order block and a support zone?: Support is a general level where price has stopped many times; an OB is a zone based on one specific candle that launched a strong move. In essence the concepts are close.
Which timeframe do order blocks work on?: They can be drawn on any timeframe, but higher-timeframe OBs (4-hour, daily) are usually stronger. Lower timeframes are noisy.

Learn it in the Academy

This term is covered with hands-on examples and a quiz in these lessons of the interactive course.

Try the theory without risk

Open a free account: demo trading with a $10,000 virtual balance, a trading journal, calculators and a step-by-step course.