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W.D. Gann

William Delbert Gann (1878–1955): pioneer of the joint study of time and price — angles, squares, anniversary cycles. A divisive figure: verifiable geometric tools wrapped in a carefully built legend.

On this page

"Time is more important than price: when time is up, price will reverse."
Period 1878 – 1955
Lens Cyclic — time and price
Works Truth of the Stock Tape (1923), Tunnel Thru the Air (1927), 45 Years in Wall Street (1949)
Tools Gann angles, Square of Nine, anniversary cycles

Who he was

Portrait — W.D. Gann

Son of Texas cotton farmers, Gann traded stocks and commodities for half a century and built around himself a carefully cultivated reputation as an infallible forecaster. He is the most divisive figure in this gallery: on one side, concrete tools that can be drawn and verified; on the other, an aura of secrets, financial astrology and legendary profits never independently documented. An honest encyclopedia keeps the two apart.

Contribution

  • Time and price on the same footing — before Gann, analysis looked almost only at price; he made the question "when?" operational: durations of moves, temporal symmetries, anniversaries of highs and lows. The historical bridge to the quantitative cyclic analysis of Hurst.
  • The angles — fans of fixed-slope lines (the famous 1×1: one unit of price per unit of time) to classify the strength of a trend against a geometric scale.
  • Square of Nine — the numeric spiral for projecting price levels and possible turn dates.
  • Rules of conduct — often forgotten behind the folklore: capital split into parts, always a stop, never average losses, never trade out of boredom. Half of his 28 rules are risk management.

What today's students learn from him

  1. The question "when?" deserves the same rigour as "at what price?" — the intuition the cyclic tradition would make measurable.
  2. Angles only work once you declare the chart's scale: a general lesson in how representation choices condition what you "see".
  3. The Gann case teaches how to separate the tool from the myth: study the verifiable techniques, leave the legend to marketing — a habit that serves with every guru, living or dead.

Study path

In preparation — This entry will be extended with angles, squares and anniversary cycles, with verifiable examples and the due distinction between documented and legendary. The context: discipline-cyclic-analysis.

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