Description Even in Florida you can't always bank on sunshine, so Atlantic BancGroup can help you save for a rainy day. Atlantic BancGroup is the holding company for Oceanside Bank, a community bank with about five branches in and around Jacksonville. Catering to individuals and small to midsized businesses in the area, the bank offers standard deposit products such as checking, savings, and money market accounts, and CDs. More than 90% of its loan portfolio is secured by real estate, including commercial properties, one- to four-family residences, construction projects, and land. The bank also writes business and consumer loans. Jacksonville Bancorp is acquiring Atlantic BancGroup.