Almost 60% of all Irish government bonds were held by non-residents by the end of March, according to figures from the Central Bank.
This marked a 6.6 percentage point increase on the same time a year ago, according to the newly released data.
There was €123.17bn worth of Irish bonds outstanding at the end of March, up €1.03bn in the month.
Of that €72.6bn was held by non-residents, largely due to the purchasing of newly-issued bonds during the year.
The Central Bank added that 31.1% of outstanding government bonds are due to mature within the next five years.
