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Legends of Trading: William Delbert Gann

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Written by Timothy Sykes
Reviewed by Jack Kellogg Fact-checked by Ellis Hobbs
Updated 10/30/2024 9 min read

William Delbert Gann was a legendary figure in the world of trading, renowned for his complex and sometimes controversial theories on market prediction.

Unlike many other traders of his time, Gann didn’t limit his analysis to traditional support and resistance levels or basic technical analysis. Instead, he emphasized the role of time cycles, ancient mathematics, and historical repetition in predicting future price movements.

His work extended beyond just market analysis—he became a figure whose methods were the subject of study and debate by traders seeking an edge.

Read this article because it shows how William Delbert Gann’s unique trading strategies can help you understand market movements today.

I’ll answer the following questions:

  • Who was William Delbert Gann?
  • What trading strategy is William Delbert Gann famous for?
  • How did William Delbert Gann get started?
  • What are the early trading successes of William Delbert Gann?
  • What was William Delbert Gann’s net worth?

Let’s get to the content!

Who Is William Delbert Gann?

Born in Lufkin, Texas, in 1878, Gann made a name for himself with his deep study of geometric and mathematical principles to forecast market movements. His trading focused on both stocks and commodities, where he developed unique approaches that relied heavily on understanding cycles, trends, and patterns.

Is William Delbert Gann Legit or a Scam?

Gann’s trading theories have long been the subject of debate. Some traders and market historians consider him a legitimate genius who tapped into a deeper understanding of market cycles. Others have labeled his methods as overly complicated, or even a scam.

However, Gann was undeniably successful in his time. By 1908, he had developed methods that claimed to accurately predict market moves, boasting a high win rate. His followers, convinced by his precision, were loyal to his teachings.

Just like in today’s market, risk management is everything. Gann was profitable not just because of his predictions but because he carefully controlled risk. That’s why Gann’s success still resonates with traders who understand that discipline matters as much as strategy.

While Gann’s methods sparked debates among traders, other figures in the world of finance have also faced scrutiny for their unconventional approaches. One such individual is Keith Gill, whose bold bet on GameStop stocks gained worldwide attention.

Like Gann, Gill’s analysis wasn’t widely accepted initially, but his high-risk strategy proved fruitful, shaking the stock market. Check out my article to learn more about Keith Gill’s infamous GameStop strategy.

What Trading Strategy Is William Delbert Gann Famous For?

Gann is most famous for developing trading strategies based on mathematical, geometric, and even astrological principles. His strategies sought to predict price movements by understanding time cycles and repeating patterns.

One of his well-known techniques is the Gann Fan, a charting indicator using diagonal lines to help predict support and resistance levels based on past market highs and lows.

Gann’s Trading Strategy

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Gann’s strategy involved using geometric, mathematical, and astrological principles to predict market movements. His approach was based on the idea that historical price patterns and time cycles repeat over time.

Gann’s theory revolved around the idea that markets move in predictable cycles. He believed that history repeats itself and that by analyzing past price movements, you could forecast future trends.

Gann’s emphasis on geometry and cycles mirrors my approach to analyzing patterns—once you can see the same setups happening repeatedly, you can start profiting from them.

Successful traders like Gann were able to master their trading strategies. Have you mastered yours? Watch my video below to learn how.

How Did William Delbert Gann Get Started?

Gann began trading in the early 1900s after moving to New York City, where he immersed himself in the world of stocks and commodities.

He was fascinated by the behavior of prices and spent countless hours studying charts, seeking to find the hidden structures behind market movements. He believed that prices and time followed natural laws, and by understanding these laws, he could predict future moves with incredible accuracy.

What are the Early Trading Successes of William Delbert Gann?

One of Gann’s early successes was a trade in which he reportedly made 286 trades in a single month with a win rate of 92.3%. This track record gained him recognition in the trading world, solidifying his reputation as someone who had mastered the art of predicting market cycles.

Gann credited his success to rigorous study, discipline, and the application of his time-tested methods.

Just as Gann’s early successes earned him a reputation for accurate market predictions, another famous case of rapid financial growth comes from Nick Leeson, a rogue trader who caused the collapse of Barings Bank.

Leeson’s trading wasn’t built on solid analysis like Gann’s but rather on high-stakes, unauthorized speculation that eventually backfired. For an in-depth look at Nick Leeson’s rise and fall, read my article.

Which Stock Picks Were on William Delbert Gann’s Watchlist?

Gann’s approach to picking stocks wasn’t based on what companies were trending in the news, but rather on the time cycles and patterns he identified in charts. He was known to trade both stocks and commodities, focusing on assets where he could predict significant moves using his cycle theories.

If Gann were trading today, he’d likely be looking at charts the same way I do—focusing on stocks with volatile price movements that are primed for a breakout or breakdown based on historical patterns.

And if Gann were trading today, he’d have the best tools:

When it comes to trading platforms, StocksToTrade is first on my list. It’s a powerful day and swing trading platform that integrates with most major brokers. I helped to design it, which means it has all the trading indicators, news sources, and stock screening capabilities that traders like me look for in a platform.

Grab your 14-day StocksToTrade trial today — it’s only $7!

What Was William Delbert Gann’s Net Worth?

At the peak of his trading career, Gann amassed significant wealth. His success, combined with his prolific writing and teaching, allowed him to lead a financially comfortable life.

Though exact figures of his net worth are hard to determine due to the lack of modern financial tracking back then, it’s clear that he made millions through his trading and market forecasting.

Trading isn’t rocket science. It’s a skill you build and work on like any other. Trading has changed my life, and I think this way of life should be open to more people…

I’ve built my Trading Challenge to pass on the things I had to learn for myself. It’s the kind of community that I wish I had when I was starting out.

We don’t accept everyone. If you’re up for the challenge — I want to hear from you.

Apply to the Trading Challenge here.

Trading is a battlefield. The more knowledge you have, the better prepared you’ll be.

Is studying price patterns like Gann did part of your trading toolkit? Write, “I’ll keep it simple Tim!” in the comments if you picked up on my trading philosophy!

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FAQs About William Delbert Gann

How Old is William Delbert Gann?

William Delbert Gann was born in 1878 and passed away in 1955. He lived to the age of 77, leaving behind a lasting legacy that continues to intrigue and inspire traders today.

Does William Delbert Gann Have a Blog or Website?

Gann didn’t have a blog or website — they weren’t invented yet — but he authored several books and trading courses. His written works, such as Truth of the Stock Tape, are still studied by traders who are interested in his theories. You can find plenty of modern-day traders discussing his methods online, as well as his sci-fi tome The Tunnel Thru the Air, which promises a hidden secret revealed to the careful reader… perhaps the secret to his method of stock market astrology?

Does William Delbert Gann Have a TikTok, YouTube, or IG Account?

Of course, Gann didn’t have social media accounts, but his legacy lives on through countless videos and social media content created by traders and educators. Platforms like YouTube are filled with analyses of Gann’s strategies and their application in today’s markets.

Does William Delbert Gann Offer a Course?

While Gann himself didn’t offer courses in the way we think of them today, he did teach through his books and private lessons. He also produced numerous guides on how to apply his time cycles and geometric methods to trading. His work laid the groundwork for many modern trading courses, including some of the techniques I teach my students.


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* Results are not typical and will vary from person to person. Making money trading stocks takes time, dedication, and hard work. There are inherent risks involved with investing in the stock market, including the loss of your investment. Past performance in the market is not indicative of future results. Any investment is at your own risk. See Terms of Service here

The available research on day trading suggests that most active traders lose money. Fees and overtrading are major contributors to these losses.

A 2000 study called “Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors” evaluated 66,465 U.S. households that held stocks from 1991 to 1996. The households that traded most averaged an 11.4% annual return during a period where the overall market gained 17.9%. These lower returns were attributed to overconfidence.

A 2014 paper (revised 2019) titled “Learning Fast or Slow?” analyzed the complete transaction history of the Taiwan Stock Exchange between 1992 and 2006. It looked at the ongoing performance of day traders in this sample, and found that 97% of day traders can expect to lose money from trading, and more than 90% of all day trading volume can be traced to investors who predictably lose money. Additionally, it tied the behavior of gamblers and drivers who get more speeding tickets to overtrading, and cited studies showing that legalized gambling has an inverse effect on trading volume.

A 2019 research study (revised 2020) called “Day Trading for a Living?” observed 19,646 Brazilian futures contract traders who started day trading from 2013 to 2015, and recorded two years of their trading activity. The study authors found that 97% of traders with more than 300 days actively trading lost money, and only 1.1% earned more than the Brazilian minimum wage ($16 USD per day). They hypothesized that the greater returns shown in previous studies did not differentiate between frequent day traders and those who traded rarely, and that more frequent trading activity decreases the chance of profitability.

These studies show the wide variance of the available data on day trading profitability. One thing that seems clear from the research is that most day traders lose money .

Millionaire Media 66 W Flagler St. Ste. 900 Miami, FL 33130 United States (888) 878-3621 This is for information purposes only as Millionaire Media LLC nor Timothy Sykes is registered as a securities broker-dealer or an investment adviser. No information herein is intended as securities brokerage, investment, tax, accounting or legal advice, as an offer or solicitation of an offer to sell or buy, or as an endorsement, recommendation or sponsorship of any company, security or fund. Millionaire Media LLC and Timothy Sykes cannot and does not assess, verify or guarantee the adequacy, accuracy or completeness of any information, the suitability or profitability of any particular investment, or the potential value of any investment or informational source. The reader bears responsibility for his/her own investment research and decisions, should seek the advice of a qualified securities professional before making any investment, and investigate and fully understand any and all risks before investing. Millionaire Media LLC and Timothy Sykes in no way warrants the solvency, financial condition, or investment advisability of any of the securities mentioned in communications or websites. In addition, Millionaire Media LLC and Timothy Sykes accepts no liability whatsoever for any direct or consequential loss arising from any use of this information. This information is not intended to be used as the sole basis of any investment decision, nor should it be construed as advice designed to meet the investment needs of any particular investor. Past performance is not necessarily indicative of future returns.

Citations for Disclaimer

Barber, Brad M. and Odean, Terrance, Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors. Available at SSRN: “Day Trading for a Living?”

Barber, Brad M. and Lee, Yi-Tsung and Liu, Yu-Jane and Odean, Terrance and Zhang, Ke, Learning Fast or Slow? (May 28, 2019). Forthcoming: Review of Asset Pricing Studies, Available at SSRN: “https://ssrn.com/abstract=2535636”

Chague, Fernando and De-Losso, Rodrigo and Giovannetti, Bruno, Day Trading for a Living? (June 11, 2020). Available at SSRN: “https://ssrn.com/abstract=3423101”