Neptune founder and CEO Robin Geffen has ruled out the possibility of a eurozone breakup following a meeting with Italian Prime Minister Mario Monti.
Italy's will struggle to finance itself until borrowing costs fall back towards the 4% level, according to Goldman Sachs Asset Management chairman Jim O'Neill.
A downgrade of Italy's credit rating by one of the major ratings agencies would come as "no surprise", according to Allianz Global Investors' chief investment officer Neil Dwane.
UniCredit has seen its shares suspended for the second time after they plunged almost 10% as it unveiled the price of a €7.5bn (£6.3bn) rights issue.
Developed economies will see $7.6trn worth of debt mature this year, with Italy towards the front of the refinancing queue at a time when its borrowing costs remain elevated.