The Quinn Group has reported an operating loss of €888m for 2009, mainly due to losses at Quinn Insurance.
This compares to profits of €239m in 2008.
Quinn Insurance, which is currently under administration, incurred operating losses of €644m in 2009.
Turnover at Quinn Group - including its insurance operations - amounted to €1.6bn in 2009, down from €2.2bn the previous year.
However, the group's manufacturing operations continued to trade profitably, with earnings from continuing operations coming in at €104m.
Quinn Group chief executive Paul O'Brien said the 2009 results show the full effects of the losses incurred by QIL during the period, which are 'hugely disappointing'.
He said the future of the group now lies in its manufacturing business, which are involved in glass, construction products, plastics and packaging, and radiators.
