Order blocks — where big players stacked their orders

In plain words

Big players’ orders are too large to fill in one go. So just before they push price up hard, there is a stretch where they quietly buy from everyone who is selling. On the chart it is left behind as the last down candle before a big rise.

SMC calls that candle’s price range an order block: the place where big orders were gathered. If price comes back to it later, the orders left unfilled there may support price again.

Falling is the opposite — the last up candle before a big drop is a bearish order block.

The concept

The last opposite candle before a break

• Bullish order block — the last down candle (close below open) before a close breaks above a swing high (BOS · CHoCH ↑). The block is that candle’s high to low.
• Bearish order block — the last up candle before a close breaks below a swing low (BOS · CHoCH ↓). Again, its high to low.

The break comes first

Not every down candle is an order block. Only when a structure break follows do we read it as “big players acted at that candle”. The break is the same BOS · CHoCH from the market structure article.

A real Bitcoin 4-hour chart (January 2025; dates and times in Korean time, as on the chart axis). The 9 pm candle on 17 January closed at 104,000 USDT, above the swing high (102,724.38 USDT, 9 am on 7 January), making a CHoCH ↑. The last down candle before it was the 5 am candle of 17 January — high 100,641.99 USDT, low 99,377 USDT. That range is the bullish order block (the green outlined box).

Three days later, the 5 am and 9 am candles of 20 January dipped to 99,651.6 USDT and 99,550 USDT, into the box, but both closed above it. The 1 pm candle that same day rose past December’s high (108,353 USDT) to 109,588 USDT.

Invalidation

A bullish order block is treated as invalid once a close lands below its low — no orders held price even there. A bearish order block is invalid once a close lands above its high.

An analogy

Imagine a wholesaler at the market who always buys in bulk at about the same price.

• The order block is the price where that wholesaler last bought big.
• When the price drops back near it, many expect the wholesaler to buy again. If they do, the price holds.
• But if nobody buys even there and the day ends below it (the close), that price can no longer be trusted — the block is invalid.

In practice

Watching for the return

An order block is used not at the moment of the break but when price comes back to it later. Pick blocks in the direction of the swing trend and watch how price reacts when it reaches one.

A 4-hour chart from October 2025. Right after the 5 pm up candle of 16 October (109,635.15 – 111,728.7 USDT), the 9 pm candle closed below the swing low 108,620.07 USDT, making a CHoCH ↓ — the same break as the 4-hour example in the market structure article. That makes this up candle a bearish order block (the red outlined box).

Four days later, the 5 pm and 9 pm candles of 20 October reached highs of 111,679.25 USDT and 111,705.56 USDT — just under the top of the box (111,728.7 USDT) — and were pushed back; the 1 pm candle of the 21st fell to 107,473.72 USDT.

The moment it breaks

The same chart a few candles later. The 9 pm candle of 21 October 2025 closed at 113,422.61 USDT, above the top of the box. The block was invalidated and our chart removed the box — the “Block was here” marker shows where it used to be.

An order block is “a place that may hold”, not “a place that will hold”. That is why many people decide in advance that the far side of the block is the line where they admit they were wrong.

Going deeper

Overlapping an FVG

The big candle that follows an order block often leaves an FVG as well. Many people give more weight to where a block and a gap overlap. The first chart in the FVG article (1 October 2025) is an example.

Only swing structure

Counting an order block for every internal (5-candle) break would bury the chart in boxes. Blocks from swing breaks are widely seen as more reliable, and our chart counts only swing (50-candle) breaks.

Body or wicks?

Some draw the block over the candle body only (open to close), others over the full candle (high to low). Our chart draws the full high-to-low range.

Blocks touched many times

Each touch is thought to use up some of the orders left there, so many people read a block touched several times as weaker.

After invalidation

Some read an order block that a close has broken through as flipping its role (a breaker block). Our chart removes invalidated blocks, so it does not draw these.

On our chart

Chart tab › SMC button › Add-ons › Order blocks.

• Structure (Swing, or Swing + internal) must be on. With structure off the check is greyed out and nothing is drawn, but your choice is kept. It starts checked, together with FVG.
• Blocks come only from swing (50-candle) breaks — both BOS and CHoCH. Internal breaks never make one, even with “Swing + internal” on.
• From the broken high (low) candle up to the candle before the break, the last opposite candle is used — a down candle (close < open) for an upward break, an up candle (close > open) for a downward one. The breaking candle itself is never used, and with no opposite candle there is no block.
• The box is that candle’s high to low, from that candle to the right edge of the chart. Bullish is green, bearish red — a light fill with a border of the same colour. The “OB” label sits inside the top of the box at the right edge; if the box is narrower than the label or the label would overlap another, only the label is hidden. Where it overlaps an FVG, the FVG fill is on top.
• From the candle after the break on, once a close goes below a bullish block’s low (above a bearish block’s high), the block is invalid and removed. A wick through it does not count.
• Only the 3 most recent live blocks of each direction are drawn.
• The candle still forming is left out. Only the candles the chart loaded (500 from Binance, 200 from Upbit) are searched, so blocks from older breaks do not show.

Next: the orders stacked at equal highs and lows, EQH · EQL.