Price and volume together: nonconfirmation is not OBV divergence
Owner-reviewed educational pilot
Direct answer
Raw price-volume nonconfirmation means price makes a new high (or low) while the volume bar on that candle is smaller than at the earlier extreme. OBV divergence is a different comparison: on-balance volume is a running total, so it can make a new high even when the latest bar is smaller. Neither one forces a reversal, and in most forex data the volume shown is tick activity, not traded contracts.
Scope: This guide separates two comparisons that are often merged. It gives no direction calls and makes no claim that either pattern predicts what comes next.
- Raw volume bar
- The volume printed for one candle.
- Nonconfirmation
- A new price extreme whose own volume bar is lower than the bar at the previous extreme.
- OBV
- On-balance volume: adds a candle's volume when it closes up, subtracts it when it closes down, and keeps a running total.
- Tick volume
- A count of price updates, common in decentralised markets such as spot forex, used as a proxy for activity.
Side by side: example and counterexample
| What to compare | Example | Counterexample |
|---|---|---|
| Price at second peak | Higher high | Higher high |
| Raw volume bar | Lower than first peak | Lower than first peak |
| OBV at second peak | Not drawn | Higher than first peak, so no OBV divergence |
| What followed | Not shown, unresolved | Further higher closes |
What to inspect: observation vs inference
- 1. Which volume series is this?Observation
Check whether the data source reports traded volume or tick volume.
InferenceTick volume tracks activity, not size. Compare it within the same source only.
- 2. Which comparison am I making?Observation
Raw bar against raw bar, or OBV value against OBV value.
InferenceThey can disagree, as the counterexample shows. Name the one you used.
- 3. Is the volume level unusual for this time of day?Observation
Compare with the same session on earlier days.
InferenceA small bar during a quiet session may be normal rather than meaningful.
- 4. What did price do afterwards?Observation
Record later closes without assuming a reversal.
InferenceNonconfirmation can be followed by continuation, a range, or a reversal.
What this cannot tell you
- The figures are synthetic. Values were chosen to make the two comparisons disagree on purpose.
- Neither nonconfirmation nor OBV divergence forces a reversal; both describe the past only.
- Tick volume from different brokers can differ, so comparisons across sources are unreliable.
Common mistakes
Practice
Price prints a higher high on a smaller raw volume bar, but OBV also makes a higher high. Which statement is most accurate?
Separate the raw-bar comparison from the OBV comparison before choosing.
Sources
- GTCFX: Volume-based indicators explained (OBV, VWAP and more)Used for: How OBV is calculated, and the difference between forex tick volume and traded volume.
- Illustrations, counterexamples and geometry checks are original to this guide and use synthetic data.
Author: Hanzo development team. Owner approval of content and visuals: 2026-10-12. Independent subject-expert review: not claimed. Publication date: not claimed.