Doug K. Le Du is a preferred stock researcher, author of the book titled Preferred Stock Investing, syndicated writer and publisher of three monthly preferred stock newsletters. Doug has been studying the preferred stock marketplace since 2002. In 2006 he published the first edition of Preferred Stock Investing which has been updated and re-published regularly since then. Preferred Stock Investing teaches risk-averse investors how to screen, buy and sell the highest quality preferred stocks. The book lists all qualifying preferred stocks that have been issued since January 2001. The ten selection criteria from Preferred Stock Investing filtered out the 57 preferred stocks from the big banks that would be claimed by the Global Credit Crisis and let pass the 13 issues from the big banks that were saved by acquisition. In 70 out of 70 cases, a 100% success rate for almost two years running, the preferred stock selection criteria found in Preferred Stock Investing protected preferred stock investors. As a researcher, Doug researches the market price behavior of the highest quality preferred stocks and writes to you about trends and opportunities. His premium subscription service (described at www.PreferredStockInvesting.com) providers subscribers with email alerts of new preferred stock issues, access to his preferred stock catalogs and HotLists, a monthly newsletter just for premium subscribers and much more. Doug's academic background is in economics and statistics. Doug retired from his position as Managing Director at one of the world's largest management consulting firms in 2002 to focus on preferred stock research. Doug does not sell preferred stocks nor is he a stock broker or financial adviser.