The book describes one of the world's most profitable stock selection systems Can Slim, through which many investors have made large fortunes in the stock market. The creator of this system, William O'Neill, has been one of the most respected stock exchange advisors in the United States in recent decades. Among his clients are all the largest investment companies , Banks, pension funds and other institutional investors of the country (more than 600) as well as hundreds of thousands of individual investors, working on the Can Slim system and receiving all the necessary information through the daily newspaper Investor's Business Daily, which he founded in 1984. It is now the second U.S. national business newspaper after The Wall Street Journal. The Can Slim system is based on the patterns of behavior of the most profitable stocks in the last 50 years. It refutes many stereotypes and erroneous criteria for the selection of shares and in practice has proven to be extremely effective. Knowledge of the Can Slim system is absolutely essential for stock market professionals. In addition, the book serves as an excellent teaching tool for teachers and students of economic and financial universities, as well as all those who seek to make money on stocks.