Keith A. Allman is a capital markets professional with a specialization in analytics and modeling. He is currently the principal trainer and founder of Enstruct, a quantitative finance training company, as well as a Managing Director with NSM Capital Management. Prior to this, Allman was a vice president at Citigroup's Global Corporate and Investment Bank. He has also worked for MBIA Corporation in their Quantitative Analytics division. Allman is the author of Modeling Structured Finance Cash Flows with Microsoft Excel, which is published by Wiley.