Day Trading Setups
Advance/Decline Line Divergence (Market Breadth Fade)
Every habit in this library exists because I paid tuition for the mistake first.Jason Parker, Founder of Trading Habits
A cumulative advancing-minus-declining line can drift away from price for a long stretch before it means anything, this tool tests whether you can tell presence from magnitude in live.
Every fresh swing pauses the tape
Genuine candles play on top, a genuine simulated advance/decline breadth line runs underneath, generated from its own partly independent process so it can genuinely pull away from price. Every time price prints a fresh swing high or low, the tape pauses. Call Confirming if you think breadth made its own fresh extreme in step with price, or Diverging if you think it fell short. The grade comes from the actual computed relationship between the two lines at that pivot, not a guess, and every call is also tracked against what price really did afterward.
Playing session…
| Bucket | Trials | Reversed after | Reversal rate |
|---|---|---|---|
| Confirming (no divergence) | 0 | 0 | — |
| Mild divergence | 0 | 0 | — |
| Moderate divergence | 0 | 0 | — |
| Strong divergence | 0 | 0 | — |
How it works
- The breadth line is generated from its own process, correlated with price but not locked to it. Most of the time it moves with the general drift of the session, but it carries enough independent variance to genuinely diverge for genuine stretches.
- Every time price prints a fresh swing high or low, the tool checks whether breadth made a comparably fresh extreme of its own. That comparison, the normalized size of price's new swing against the normalized size of breadth's move at the same moment, is computed directly from the genuine numbers, not eyeballed.
- Your Confirming or Diverging call is graded against that genuine computed relationship. A correct call means you read the two lines right, independent of what price does next.
- Every judged pivot also gets bucketed by how big the divergence actually was and checked against genuine forward bars. That is the separate reversal-rate table, and it is the part worth watching closely.
Where this breaks
Presence of a divergence matters far less than its size
Breadth can diverge from price for many bars before price ever turns, and a mild divergence can simply resolve itself as breadth silently catches back up while price keeps trending. The mild-divergence row in the table above should sit close to a coin flip, a genuine divergence that barely qualifies is not much of an edge. The strong-divergence row should show a genuine, visible advantage, since a breadth line that is badly out of step with price is a much rarer and more meaningful event. Reading this table honestly means noticing that the label "diverging" alone tells you almost nothing, the number attached to it is what carries the information.