Sabrina C. Callin, CFA, CPA, is an Executive Vice President and head of the StocksPLUS product management team responsible for PIMCO's global portable alpha–based equity business. Ms. Callin is joined in authoring this book by a number of colleagues with deep expertise in key areas associated with the portable alpha investment application, and who have, on average, more than eighteen years of investment experience. PIMCO currently manages over $55 billion in integrated portable alpha strategies and is generally credited with being an original innovator of the concept.