Order Block

What is an order block?

An order block is a price zone built around a selected candle just before a qualifying impulse move, which traders watch for a reaction when price returns to it. A bullish block starts with a down candle before an advance. A bearish block starts with an up candle before a decline. Order blocks are part of the smart money concepts approach to price action.

Define four things: the impulse test, the source candle, the boundary prices and the point when the zone becomes active. Charting tools can calculate these zones from configured rules.

Order block retest: entry, stop and target

Candle 12 reaches $98.40 and closes at $98.80. It arrives eight 15-minute bars after the source candle.

Take a $98.90 entry, with a $97.30 stop and a $104.20 target. Entry-to-stop distance is $1.60; target distance is $5.30. The ratio is 3.31.

For a $160 risk budget, quantity is $160 / $1.60 = 100 shares. Candle 14 reaches the objective and candle 15 closes at $104.80.

Activate the zone only after its impulse confirmation: here, candle 5's close above the range at $99.80 activates it before the retest. Once the entry fills, the stop and the size carry the decision.

Position size with a fill allowance and costs

Keep the $98.90 entry, $97.30 stop reference and $104.20 target. Add a hypothetical $0.20 per-share adverse stop fill and $2 fixed round-trip cost. A $160 planned budget supports floor(($160 − $2) / ($1.60 + $0.20)) = 87 shares.

A stop-out at that fill loses 87 × $1.80 + $2 = $158.60. The target earns 87 × $5.30 − $2 = $459.10 before any target slippage. A gap through $97.30 fills the stop at the next available price, and a fill well below the $0.20 allowance takes the loss past the $160 budget.

Bearish order block example

The reflected example places the final up candle between $103 and $104.40 before a decline reaches $97.80. Its later retest supports an assumed $103.10 short entry and $104.70 stop reference.

The planned stop and target distances are again $1.60 and $5.30. Apply the zone’s configured wick, close or midpoint condition when deciding its status.

How traders use order blocks

Use market structure to organize the surrounding trend and position sizing to translate the trade distance into quantity.

As price returns to the zone, watch Options Flow for calls bought at the ask in defense of it, and read the trade’s loss below $97.60 and its payoff at your objective in the Options Profit Calculator.

Limitations of order blocks

• Pick the construction before you mark the zone. The example’s low-to-open zone spans $97.60–$99, while a body-only zone spans $98–$99, and the impulse test decides which candle qualifies at all.
• Mark zones only from candles that had closed at the decision time. A zone drawn after the move looks cleaner than the live decision did, so test the rule on bars as they printed.
• Size with a fill allowance. When price moves straight through the zone on a retest, the $97.30 stop fills at the next available price, so the sizing above adds $0.20 a share; a gap well past that allowance breaks the $160 budget.
• The zone comes from price; the order book and the prints at the zone show whether size is defending it.
• Match the mitigation rule before trusting a zone’s status: tools retire zones under different wick, close or midpoint conditions.

Bottom line

An order block marks the last opposing candle before an impulse as a zone to watch on a retest. Fix the construction, activation and mitigation rules before marking it, place the stop beyond the zone, and size from the stop distance plus a fill allowance.