Richard Demille Wyckoff (1873–1934) was an early 20th-century pioneer in the technical approach to studying the stock market. He is considered one of the five “titans” of technical analysis, along with Dow, Gann, Elliott and Merrill. At age 15, he took a job as a stock runner for a New York brokerage. Afterwards, while still in his 20s, he became the head of his own firm. He also founded and, for nearly two decades wrote, and edited  The Magazine of Wall Street, which, at one point, had more than 200,000 subscribers. Wyckoff codified the best practices of Livermore and others into laws, principles and techniques of trading methodology, money management and mental discipline.