Stock market analyst Tom DeMark spends many weekends in his home office in Scottsdale, Ariz., pondering the fate of the markets. The founder of Market Studies studies the price movements of stocks, bonds, commodities, currencies, and indices to try to determine where things may be headed, and investors pay for the privilege of knowing his thoughts. DeMark has thousands of subscribers to his company’s service through Bloomberg, and he has served as a consultant to Leon Cooperman and Paul Tudor Jones in the past. His only personal client at the moment is SAC Capital founder Steven Cohen, who has retained DeMark for 15 years as a special adviser...This past weekend, DeMark says, his prognostications for the stock market started to look rather bleak. His Dow Jones Index chart covering the period from May 2012 to the present seems to be tracking, almost precisely, the months leading up to the 1929 stock market crash. [BusinessWeek]