Cathay General Bancorp is the holding company for Cathay Bank, which mainly serves Chinese and Vietnamese communities from some 30 branches in California, and about 20 more in Illinois, New Jersey, New York, Massachusetts, Washington, and Texas. It also has a branch in Hong Kong, and offices in Shanghai, and Taipei. Catering to small businesses and low- to middle-income consumers, the bank offers standard deposit services and loans. Commercial mortgages account for more than half of the bank's portfolio; business loans comprise more than 20%. The bank's Cathay Wealth Management unit offers online stock trading, mutual funds, and other investment products and services through an agreement with PrimeVest.