This book conducts a simulation study creating universal, hypothetical bank holding companies (BHCs) through mergers to examine whether BHC expansion into nonbank business areas, those currently prohibited by law, will increase the riskiness of the universal BHCs. Part 2 reviews the contemporaneous literature and Part 3 discusses the weaknesses of that literature. Later sections specify an analytical model and describe the date and estimating procedure as well as presenting empirical results.