When an RSI lower high is not divergence

In almost every first chart clinic, someone points to an RSI lower high and calls it bearish divergence while price is still printing overlapping ranges. The oscillator did make a lower high. The price “swing high” they marked is often a minor push inside a larger structure — not a swing the method would promote.

Start with the price swing

Divergence detection is a relationship between two series. If the price series is poorly sampled — if every wiggle counts as a swing — the relationship becomes noise. Insightfuldata’s classroom rule is blunt: name the swing on price first, write the reason it qualifies, then look at the oscillator.

A practical test

Ask whether a trader who never saw the RSI would still call that peak a meaningful swing high on your timeframe. If the answer is hesitant, do not spend emotional capital on the oscillator disagreement. Save the annotation for a cleaner pair of swings.

Classroom pattern

We keep a folder of “pretty RSI, soft swings” from ASX daily charts. Students are often surprised how many textbook-looking oscillator shapes sit on top of price that never broke a prior structure. Divergence training that skips this filter manufactures confidence without improving entries.

Bring three contested examples to a chart clinic if you want this argued on your own watchlist.