DERRICK NIEDERMAN is a mathematician turned securities analyst and financial writer. His credits include a PhD in mathematics from MIT and articles in a wide variety of financial publications, most recently as a contributing editor at Worth magazine. He is the author of This Is Not Your Fathers Stockpicking Book: Profiting from the Hidden Investment Clues Found in Everyday Life. As a gamesman, Niederman is a former national squash champion and a life master in duplicate bridge.