William O’Neil — legendary American investor, trader, and author of books on the stock market. Founder of the investment firm William O’Neil + Co. and the newspaper Investor’s Business Daily. Creator of the CAN SLIM methodology — a stock selection system combining fundamental and technical analysis. He was one of the first to actively use computers for market analysis back in the 1960s.
In his books (“How to Make Money in Stocks” and others), he emphasized that the key to success is discipline, the ability to read charts, and following rules rather than emotions.
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