High Quality Content by WIKIPEDIA articles! Allied Irish Banks p.l.c. (AIB, ISEQ: ALBK, LSE: ALBK, NYSE: AIB, FWB: AIB) is a major commercial bank based in Ireland. AIB is one of the so called Big Four commercial banks in Ireland. The bank has one of the largest branch networks in Ireland, only Bank of Ireland fully rivals it. AIB offers a full range of personal and corporate banking services. AIB Capital Markets is the division of the company that offers international banking and treasury operations. It offers stockbroking services through its subsidiary Goodbody Stockbrokers. The bank also offers a range of general insurance products such as home, travel, and health insurance. It offers life assurance and pensions through its wholly owned subsidiary, Ark Life Assurance.