Trader-educator; founder of Profitunity
Bill Williams
Bill Williams (born 1932) was an American trader, educator and commodity trading advisor who founded Profitunity, a trading-education business. His books apply ideas from chaos theory and trading psychology to markets, and he created several widely used indicators, including the Alligator, Fractals and the Awesome Oscillator.
What they argue
- Traders do not trade the market so much as their own belief system, so self-understanding matters more than forecasting.
- Markets trend only a minority of the time (he put it at roughly 15–30%), so a trader should stay out while the market is directionless and act when a trend emerges.
- Market behaviour is better described by chaos theory and fractal structure than by linear forecasting.
Sources
Wiley: New Trading Dimensions (Oct 1998; features the 'Market Alligator')Wiley: Trading Chaos, 2nd edition (2004)MetaTrader 5 Help: Alligator
Summaries are Be The Puck's paraphrase of public material. Be The Puck has no affiliation with the people listed.
Books and papers
- Trading Chaos: Applying Expert Techniques to Maximize Your Profits (1995)
- New Trading Dimensions: How to Profit from Chaos in Stocks, Bonds, and Commodities (1998)
- Trading Chaos (2nd edition, with Justine Gregory-Williams) (2004)
Bill Williams' Alligator
Rule and full recordTrend following · daily
Three shifted averages called the jaw, teeth and lips. When they fan out in order, the alligator is 'eating' and the trend is up.
In right now97 of 377As of the Oct 13, 2026 close.
Best risk-adjusted results against buy and hold: