The Hellenic Financial Stability Fund will supply 75 percent of the aid needed via CoCos and 25 percent in exchange for new common shares the banks will issue, the government's economic policy council said, finalising the architecture of the plan. A health check of Greece's four main banks - National (AT: NBGr ), Piraeus (AT: BOPr ), Eurobank (AT: EURBr ) and Alpha (AT: ACBr ) - by the European Central Bank has shown that the lenders need to cover a 14.4 billion-euro (£10.2 billion) capital hole. The ECB conducted an asset quality review (AQR) and stress tests under baseline and adverse scenarios for the country's economy and projected credit losses up to 2017. It announced the results on Saturday. The exercise revealed that under baseline assumptions the banks need to plug a 4.4 billion-euro capital shortfall. Under the adverse scenario, the capital hole came to 14.4 billion euros.