Technical Glossary / Fibonacci & Gann Tools
Gann Grid
A lattice of Gann angles extended in both directions from a price and time anchor.
Definition
A Gann grid tiles the chart with the same family of angles, usually the 1x1 and its complement, repeated so the lines form a diamond lattice. Where lines cross, the method marks a price-time intersection. The idea is that both the price of a future bar and the bar number are on the grid, so a turn is supposed to be more meaningful when it lands on a crossing. As with the fan, the lattice is completely determined by the anchor and the price-per-bar unit. A wrong unit produces a dense picture that will still pass near many bars, because a lattice is designed to be everywhere.
How it works
A grid is easy to over-read precisely because there is always a line nearby. Before you use one, define what counts as a hit: the bar's low within a stated distance of a crossing, with the distance fixed in price units, not in pixels. Then apply that rule to the next swings without moving the anchor. If you will not do that, the grid is a texture on the chart, not an analysis. Intersections that also match a horizontal level you had for other reasons are the only ones that deserve a second look. The grid is not allowed to vote twice with a Fibonacci level derived from the same anchor.
How traders use it
Use a grid sparingly, on a high timeframe, from one major low, with one frozen scale. Let it suggest dates when a price you already care about might be revisited. If the date passes with no reaction, record a miss. A tool you cannot record a miss for is a tool that cannot be wrong, which means it cannot teach you anything. Most traders are better served by a plain vertical time count and a horizontal level than by the full lattice.
Common mistakes
Zooming until the crossings look prophetic. Also starting a new grid from the latest low every time the old grid misses, and remembering only the grid that was active when a turn happened. That is a scrapbook, not a method. And trading a crossing in the middle of a lattice with no price level and no stop other than "the next diamond."
Limitations
The grid is a deterministic drawing with a free scale parameter. Its hit rate is dominated by that parameter and by the tolerance. It does not see volume, open interest, or the regime. Dense geometry creates confidence. Confidence is not a property of the forecast. If the scale is not justified in one sentence, the grid should not be on the chart you trade from.
This note explains the term. A sketch shows the shape of the idea. Neither is a recommendation, a signal, or a comment on any security. Indicator settings and exchange conventions differ. Check the live chart and the contract specification before you use a number.