Laurie Goodman is an apolitical number cruncher who has spent most of her 28-year career out of the public view, studying the minutiae of mortgage-backed securities (MBS) for big investment banks. She's long been a star among Wall Street insiders, however. She holds the record for the most top rankings for fixed-in-come research from the trade bible Institutional Investor. While Goodman concedes she underestimated the impact of the housing bubble's bursting early on, by mid-2007 she was warning investors to prepare for a deep downturn. She prepared herself as well.