William O’Neil + Company was founded in 1963 by legendary investor William J. O’Neil. More than five decades later, we are still using his unique methodology to uncover the market’s best stocks.
The 1960s gave birth to the Go-Go Years on Wall Street, a significant cultural shift that coincided with the early success of William J. O’Neil, an outstanding young trader at securities firm Hayden, Stone & Co. who had developed his own signature style of stock analysis. While many investors were relying on P/E ratio as a key stock screening metric, O’Neil studied historical models of winning stocks and developed a proprietary trading methodology that blends quantitative and qualitative analysis—the method we still use today.