Order Blocks vs. Fair Value Gaps: What's the Difference?
Two of the most confused concepts in smart money trading, explained side by side — how each forms, why they're not interchangeable, and when to use which.
Ask five traders to define an order block and you'll get five different answers — and most of them will accidentally describe a Fair Value Gap instead. The two concepts overlap in practice but they measure different things.
What a Fair Value Gap Actually Is
As covered in our FVG breakdown, a Fair Value Gap is a three-candle imbalance — a visible gap between the wicks of candle one and candle three, created because price moved too fast to trade in an orderly, overlapping way. It marks inefficiency.
What an Order Block Actually Is
An order block is the last opposing candle before a displacement move — the final down-close candle before an aggressive rally, or the final up-close candle before an aggressive selloff. It represents the origin of the institutional order flow that caused the move, not the inefficiency the move left behind. The theory: large orders were absorbed at that candle's range, and if price returns to it, similar interest may re-enter there.
Side by Side
| Fair Value Gap | Order Block | |
|---|---|---|
| What it marks | The imbalance left behind by a move | The origin candle of the move |
| Location | Inside the displacement leg | Immediately before the displacement leg |
| Formed by | Three-candle wick relationship | A single candle's open/close |
| Typical use | Entry zone on retracement | Entry zone or confluence with an FVG |
Why This Distinction Matters for Entries
Treating them as the same thing leads to marking the wrong zone on your chart — and a zone that's too wide or in the wrong location changes your stop placement and risk-to-reward. In the TJR framework, the FVG is the primary entry trigger following a Market Structure Shift; an order block is used as confluence — if the FVG retracement also taps into the order block's range, that's a stronger signal than either concept alone.
A Practical Rule of Thumb
If you're marking the gap between candles, you're marking an FVG. If you're marking a specific candle's body, you're marking an order block. They frequently sit right next to each other on a chart precisely because one causes the other — which is exactly why they get confused so often.
See both concepts applied together in the full TJR strategy breakdown, or browse verified trades to see them marked on real charts.