K. Le Du is a preferred stock researcher and author of the book Preferred
Stock Investing, first published in 2006.
Doug is also a syndicated
writer for Seeking Alpha and The Motley Fool,
a PortfolioChannel contributor and writes
three monthly newsletters regarding preferred stocks and the
marketplace that they trade within.
The ten preferred stock
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
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
In September of 2020,
Doug announced his retirement, and in October 2020 announced that the CDx3 Notification Service and Preferred Stock List database
system have been acquired by BNK Invest, Inc. (BNK), a firm with a long history of providing a wide
variety of services to income and value investors.