Investors Community Bank | 1,690 followers on LinkedIn. Investors Community Bank is now Nicolet National Bank. Visit us at NicoletBank.com or find us on LinkedIn. | In 1997, a group of banking entrepreneurs saw that the business of banking was changing, and on March 17th of that year, Investors Community Bank opened its doors. Technology was taking over and corporate roadblocks were limiting a banker’s ability to build relationships with customers. So these entrepreneurs took a chance and started Investors Community Bank.