Allied Irish Banks, p.l.c. is one of the so-called Big Four commercial banks in the Republic of Ireland. AIB offers a full range of personal, business and corporate banking services. The bank also offers a range of general insurance products such as home, travel and car. It offers life assurance and pensions through AIB Life.
In December 2010 the Irish government took a majority stake in the bank, which eventually grew to 99.8%. AIB's shares are currently traded on the Irish Stock Exchange and the London Stock Exchange, but its shares were delisted from these exchanges between 2011 and 2017, following its effective nationalisation. The remainder of its publicly traded shares were listed on the Enterprise Securities Market of the Irish Stock Exchange until 23 June 2017.