Subsequent to the liquidation of IBRC the Central Bank of Ireland acquired €25bn of Floating Rate Notes (FRNs) and €3.46bn of Government Fixed Coupon 2025 Government bonds.
According to the Central Bank's 2013 Annual Report the FRNs were valued at €27.8 billion at the end of December 2013 giving rise to an unrealised gain of €2.8 billion. According to the same report the Fixed Coupon 2025 Government bonds was valued at €3.5 billion giving rise to an unrealised gain of €292.7 million at that date.
Further details in relation to the bonds can be found at notes 16 and 34 of the Annual Report which can be accessed at http://www.centralbank.ie/publications/Documents/Central%20Bank%20of%20Ireland%20Annual%20Report%202013.pdf.