Alfa SAB de CV is a Mexico-based holding company, which manages a portfolio of diversified subsidiaries. Its portfolio includes Sigma, a producer, marketer and distributor of foods under a number of brands in Mexico, the United States, Europe and Latin America; Alpek, a producer of polyester, namely purified terephthalic acid (PTA), polyethylene terephthalate (PET) and fibers, and offers to the Mexican market expandable polystyrene (EPS) and caprolactam, among others; Nemak...