What Are Order Blocks? Smart Money Concepts Explained

An order block is the last candle going one way just before price turns and runs hard the other way. Smart money concepts - a popular style of chart reading, usually shortened to SMC - treats that candle's price range as the spot where large buyers or sellers did their business, and marks it as a box to watch in case they act there again. On a Bitcoin chart it is simply the last red candle before a sharp rally, drawn as a rectangle.

Where does an order block come from?

From a reasonable guess about how big orders get filled. Someone buying a very large amount of ETH cannot do it in one click without pushing the price up against themselves, so they buy in pieces wherever there are sellers to take. Once that supply is used up, nothing is left to absorb the buying and price jumps. It works like a wholesale buyer clearing out a market stall: the stall empties quietly, then the next shopper finds the shelf bare and the price higher. The last opposing candle is a trader's best estimate of where that quiet clearing happened.

Why do traders watch the zone?

Because price often drifts back to that area later, and SMC traders want to be there if it does. The attraction is not magic - it is that the box gives a clear place to be wrong. If you act near the zone, the level just beyond it becomes your line in the sand, so the risk on the trade is measured in advance instead of guessed at.

What an order block is not

It is not proof anyone bought there. A chart records trades, never intentions, and nothing in the candle tells you who was on either side. Plenty of marked blocks are simply ignored by the market. It is a zone of interest, which is why the next two guides are about separating the ones worth marking from the rest.

Open a four-hour Bitcoin chart on TradingView, mark the last down candle before the three biggest rallies of the past month, and watch what price did when it came back. Then read what makes an order block valid and what happens when one fails.