Alaska Air Group said it has increased...

Alaska Air Group said it has increased its ownership in Long Beach-based Jet America Airlines to 29% and has received Transportation Department approval to boost its holdings to 51% . . . The Federal Reserve Bank of New York approved Chase Manhattan’s acquisition of Continental Bancorp of Arizona, parent of that state’s sixth-largest bank . . . Grodins of California, a San Leandro, Calif., men’s clothing store chain with 36 outlets in California, Oregon and Nevada, has been sold to CRO America, a South San Francisco-based catalogue apparel company.