List of quotations and sayings by William J. O'Neil on topics like amateurs, simply, professionals
90% of the people in the stock market, professionals and amateurs alike, simply haven't done enough homework.
About William J. O'Neil
William J. O'Neil
William J. O'Neil is a stock trader, entrepreneur and writer, who founded the business newspaper Investor's Business Daily and the stock brokerage firm William O'Neil & Co. Inc. He is the creator of the CAN SLIM investment strategy. He studied business at Southern Methodist University, received a Bachelor's degree and served in the United States Air Force.