Bill M. Williams, PhD, CTA is the founder and visionary of the Profitunity Trading Group, which he established in 1984. Bill Williams is considered to be the forefather of modern trading psychology combined with applied technical analysis and chaos theory in trading the stock and commodity markets. He is the creator of the Wiseman Indicators and the Alligator Trading System which includes the Fractal of the Elliott Wave, the MFI, the Wiseman Indicators, the Super AO indicator, the AC indicator and the Profitunity Alligator indicator. He has over 52 years of experience as a stock and commodities trader and over 25 years of teaching experience as a trading educator. He has educated thousand of traders in over 60 countries on every continent, as well as thousands of other traders who have read his three best-selling books, Trading Chaos, New Trading Dimensions, and Trading Chaos: Second Edition, which have contributed to furthering his unique trading concepts. He is also well known from his many years on the speaker circuit in the 80's and 90's at trading conferences around the world with a solid group of high-level traders and colleagues such as Larry Williams and Jake Bernstein. He has taught seminars throughout Europe, Asia and the United States on the trading methodology described in the three Trading Chaos books and taught in the Profitunity Home Study Course and Private Tutorials.

比尔·威廉姆斯博士实际从事交易活动长达35年，针对交易商的心理与市场间的相互作用，他的创造性工作产生了一种新的心理疗法。威廉姆斯博士是市场推进指数（MFI）的发起人，该指数现在在世界范围的许多计算机分析程序中被标准化了。他也是艾略特波浪理论的研究发现者之一。

威廉姆斯被公认为是运用混沌学的典型交易商，也是《混沌交易法：运用专家技术获取最大利润》（1995年）一书的作者。