Here's the 2 things that are keeping top bankers awake at night right now.
The EU bonus cap
Reuters reports that bankers who sidestep a cap on their bonuses will face action from the European Union's banking regulator, the bloc's financial services chief said on Tuesday as he fought off calls to toughen up the measure.
The cap is one of the most high-profile rules approved by the 28-country bloc following public anger over high pay at banks, many of which were propped up by taxpayers in the 2007-09 financial crisis.
The rule, already the toughest curb on bonuses globally, limits them to no more than an employee's fixed salary, or twice that level if approved by the bank's shareholders, and will affect 2014 awards to be handed out early next year.
Bank health checks
The news agency also reports that Euro zone bankers are worried that sensitive information will leak out before the official publication of the bloc's review of bank balance sheets, triggering speculation and making investors uneasy.
The European Central Bank is putting the euro zone's 128 largest banks through a rigorous health check before it becomes their supervisor in November and plans to publish the results in one go in October to avoid market disruption.
Even if some banks were to issue positive news about the tests, that might put pressure on other banks to show how well they compared.
'We see this as a problem', said Stefan Winter, head of the association of foreign banks in Germany, on Tuesday. He is also head of UBS's German investment banking operations.