2012 Reprint of 1936 Edition. Exact facsimile of the original edition, not reproduced with Optical Recognition Software. William Delbert Gann (1878 - 1955) also known as W. D. Gann, was a finance trader who developed the technical analysis tool known as Gann angles. Gann market forecasting methods are based on geometry, astrology, and ancient mathematics. Gann wrote a number of books on trading, including the "New Stock Trend Detector." Gann sold the techniques in this book alone for $500 to $1, 000 in the 1930's and 1940's. Gann has developed a very faithful group of followers and adherents.