William J. O'Neil

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DEFINITION of 'William J. O'Neil'

A noted investor, stockbroker and author. William published the highly acclaimed books: "How to Make Money in Stocks" and "24 Essential Lessons for Investment Success". William is also the founder of Investor's Business Daily, a widely-circulated investment newspaper. At the age of 30, O'Neil was the youngest person at the time holding a seat on the NYSE.

INVESTOPEDIA EXPLAINS 'William J. O'Neil'

Born in 1933, William received his bachelor's degree in business from Southern Methodist University and then served in the Air Force. He was accepted into Harvard Business School in 1960 but began his career as a stockbroker two years earlier. He was one of the first stockbrokers to integrate the use of computers into his investment research.

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