Published: September 25, 2025
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The Defining Range🔬 Master it and you master market structure Understanding Defining Range (DFR) changed everything about how I read structure. A thread🧵

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Defining Range (DFR) This is the key price range that sets the basic structure of price movement for a specific period (day, week, month, etc.).

1. How to determine the Defining Range? It is the time range T2+T3 of Q1 (Q1 is divided into 3 thirds and the last 2/3 are selected). You can use the first quarter of any time cycle. For example, within a day, DFR will be from 20:00 to 00:00 (NY time zone).

2. Next, a deviation is expected, usually in the amount of 1.5 DFR, but this value is variable. It is necessary not just to measure STDV, but to link it to price action/liquidity elements. After that, decoupling may follow and the price will begin to move in the opposite

3. The price within this range is consolidation, and a breakout of its boundaries signals the possible start of a new movement. DFR often coincides with important SSMT, FVG, or OB levels, which in turn reinforces its significance.

Example of use: At the beginning of the week, the market forms a DFR (the last two-thirds of Monday's range are taken). If the price remains within this range, we wait for the market to show a “break” through the Premium/Discount zones. If the price breaks through the DFR with

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If the price has not exceeded the DFR, this does not mean that it is not working. The price may receive a reaction within the premium/discount range.

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You can also view decorrelations between how assets interact with DFR

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An example of classic DFR execution within a day: a deviation of 0.5 from below, then the same deviation from above.

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Conclusion: The defining range is a fundamental zone that helps distinguish between phases of market consolidation and expansion.

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