The arithmetic itself
The method: square-root the anchor price, add or subtract fixed steps, an eighth, a quarter, a half, one, two, and square the result, yielding a ladder of levels spaced progressively wider at higher prices. The scaling property is the one genuinely interesting feature: level spacing grows with price, loosely tracking how volatility scales, which flat-dollar grids ignore.
The anchoring scandal
The common implementation sin: anchoring to the current close, which silently moves every level as price moves, producing lines that follow price and then get credited for being near it. Any defensible use anchors to a fixed, significant, confirmed price, a major swing extreme, and leaves the ladder alone until a new anchor is earned, the same no-repaint standard every honest tool on this site obeys.
The defensible role
Fixed-anchor square-root levels become one more mechanical reference family: occasionally coinciding with real reactions, contributing a line to clusters, never predicting anything alone. Our math-confluence layer includes them at exactly that weight, neutral labels, no cosmic claims, because a level family watched by some traders earns a small seat, and mysticism earns none.
FAQ
Do Gann levels actually work?
As standalone prophecy, no evidence supports them. As one fixed-anchor reference family inside confluence clusters, they contribute modest, honest weight.
Why must the anchor be fixed?
A moving anchor makes levels chase price, guaranteeing false hindsight hits. Fixed confirmed anchors are what make the ladder testable at all.
Should I learn full Gann theory?
For trading gold, the square-root ladder is the only piece with mechanical content. The rest is heritage literature.
ⓘ See these ideas on real price: open the free XAUUSD live chart.