W. D. Gann: Sources, Works, and Method Boundaries

Who he was, in the surviving record

William Delbert Gann (1878–1955) was an American market operator and author active in the first half of the twentieth century. Cyclepedia starts with dated documents: the contemporary article of 1909, Truth of the Stock Tape from 1923, the novel The Tunnel Thru the Air from 1927, and the bibliographic record for Wall Street Stock Selector from 1930.

This approach changes the question. It does not ask whether every story about Gann is true or false. It asks which document makes each claim, what kind of document it is, and whether it gives enough information for a reader to reproduce the method.

The 1909 report of 286 trades: what it proves

The December 1909 issue of The Ticker and Investment Digest published an article signed “R. D. W.” that reported Gann's statements about the “Law of Vibration” and periodic or cyclic laws. The magazine reported 286 stock transactions, long and short, in the presence of its representative during 25 market days in October: 264 profitable and 22 losing (p. 54).

The count adds up: 264 + 22 = 286, with about 92.31% profitable trades. The proportion of winning trades alone does not measure return and risk.

Is the return from Gann’s 286 trades verified?

The account is insufficient to reconstruct a verified return: it lacks a complete ledger, amounts, and costs. It also pairs ten doublings with “1000%” on the original margin. Ten consecutive doublings would produce 1,024 times the capital: these descriptions are not equivalent.

It is contemporary editorial testimony, not an independent audit of his career. The tone is openly admiring, although it acknowledges that nobody is infallible (p. 55).

What the 1923 manual makes operational

In Truth of the Stock Tape, Gann treats the tape as a record of prices, links movement and volume to supply and demand, and recommends daily, weekly, and monthly charts (pp. 5–7, 51–54). He also discusses capital, stops, overtrading, trend, and adding to positions.

Chapter VIII of the 1923 work contains twelve explicitly numbered rules, not twenty-eight (pp. 28–39). Among them are warnings against overtrading, letting a profit become a loss, and fighting the trend. The book also discusses adding after favourable movement rather than averaging a loss. These are ideas to study: historical stop distances and the author's promises are neither universal parameters nor evidence of effectiveness.

What the 1927 and 1930 records add

The Tunnel Thru the Air is a novel. In the foreword dated May 9, 1927, Gann presents it as a love story, a moral lesson, and a reflection on science, foreknowledge, and preparedness, promising a secret in veiled language. The character Robert Gordon discusses cycles, vibration, and astrology. In Chapter VII he states that he does not intend to explain the cause of cycles (p. 78): the checked passages document these ideas without providing a complete trading procedure to replicate.

The Library of Congress record for Wall Street Stock Selector documents its existence and date of publication in 1930. A bibliographic record alone does not establish every technique that later literature associates with it.

What these documents do not establish

The checked passages from 1909, 1923, and 1927 do not suffice to attribute a modern formulation of Gann angles or Square of Nine to the author. Linking names, formulas, and parameters to Gann requires a specific work, edition, and passage. This is a limit of the verification, not proof that he never discussed them elsewhere; the 1930 catalogue record is not a substitute for reading the whole book.

The same rule applies to famous quotations. A sentence circulating under Gann's name should not be printed as a quotation unless it can be traced to an identifiable page or contemporary record.

What remains useful to study

The clearest contribution is methodological: keep records, compare price and activity, wait for trend confirmation, and make errors observable. Start with the works and their chronology, then tape reading and risk discipline. The Gann path lets beginners study these ideas and experienced readers check their attribution, data, and reproducibility.

Advanced level: how to test a Gann claim

An expert reader can audit an attribution with four controls. First, identify the speaker: Gann, a journalist, a fictional character, or a later interpreter. Second, identify the work and edition. Third, look for the required data, scale, sequence, and invalidation condition. Fourth, determine whether the stated procedure can be repeated without filling gaps by discretion.

This method preserves two truths at once: Gann demonstrably wrote about market records, trend, risk, cycles, vibration, and astrology; the surviving use of those words does not automatically validate every formula sold under his name.

Sources

• The Ticker and Investment Digest, December 1909, pp. 52–55: article and interview; count and capital on p. 54, signature “R. D. W.” on p. 55.
• Gann — Truth of the Stock Tape, 1923 text, pp. 5–7, 28–39, 51–54. The scan also contains another work: these references use Truth's pagination.
• Gann — The Tunnel Thru the Air, 1927, foreword; Chapter VII, pp. 75–84; Chapter XIV, pp. 172–173. Full text transcribed by Project Gutenberg.
• Library of Congress - Truth of the Stock Tape, bibliographic record for the 1923 work.
• Library of Congress - The Tunnel Thru the Air, bibliographic record for the 1927 work.
• Library of Congress - Wall Street Stock Selector, bibliographic record for the 1930 work. These three records document editions, not the books' procedures.

Related links

Gann Tradition · Works, sources, and chronology · Tape reading, volume, and trend · Rules, trend, and risk · Cycles, vibration, and astrology in the sources