The introduction of the euro in 1999 marked the starting point of the development of a very liquid and heterogeneous EUR credit market, which exceeds EUR 350 bn in respect to outstanding corporate bonds. Against this background, credit risk trading and credit portfolio management gained significantly in importance. The book shows how to optimize, manage and hedge liquid credit portfolios, i.e. applying innovative derivative instruments. Against the background of the highly complex structure of credit derivatives, the book points out how to implement portfolio optimization concepts using credit--relevant parameters, basic Markowitz or more sophisticated modified approaches (e.g., Conditional Value at Risk, Omega optimization) to fulfill the special needs of an active credit portfolio management on a single--name and on a portfolio basis (taking default correlation within a credit risk model framework into account). This includes appropriate strategies to analyze the impact from credit relevant newsflow (macro-- and micro--fundamental news, rating actions, etc.). As credits resemble equity--linked instruments, we also highlight how to implement debt--equity strategies, which are based on a modified Merton approach. The book is obligatory for credit portfolio managers of funds and insurance companies, as well as bank--book managers, credit traders in investment banks, cross--asset players in hedge funds and last but not least risk controllers.