Module 2 · Market Profile & TPO
Initial Balance & Range Extension
The first hour sets the base; extension shows who entered.
In this lesson you'll
- Define the Initial Balance (IB)
- Understand range extension and what it signals
- Use the IB as the day's early reference
Dalton's metaphor: the IB is the base of a lamp. A wide base is stable (hard to tip over → hard to extend the range); a narrow base is unstable (easy to break out → likely range extension). So the width of the IB hints at the day's character before it develops.
Key takeaways
- IB = the first hour's range; the 'base of the lamp'.
- Wide IB = stable (less extension); narrow IB = unstable (likely extension).
- Range extension beyond the IB signals longer-timeframe participants entering.
- Be cautious applying the IB rigidly to 24-hour futures.
Check your understanding
Pick an answer to reveal instant feedback. Answer every question to complete the lesson.
Why that's off: Stable, contained days come from a WIDE IB.
Why that's off: The IB is just the first hour; the day continues.
Why that's off: IB width is a meaningful early tell about day character.
Dalton's lamp metaphor: a narrow base is unstable and easy to tip, so a narrow IB more often leads to range extension. A wide IB is a stable base that tends to contain the day.
Why that's off: Fading would keep price inside the IB, not extend it.
Why that's off: Extension is normal auction behavior, not an error.
Why that's off: Extension can happen any time after the first hour.
Extending beyond the IB means a larger, longer-horizon participant has stepped in to push price to new prices — the auction is seeking value elsewhere.
Educational content only. Nothing here is financial or trading advice. Order-flow and options patterns shift probabilities; they never guarantee outcomes.