Bloomberg reports that global finance executives warned of parallels between today's soaring stock markets and the froth of the pre-crisis years as they said investors could be wrong-footed by central banks raising interest rates.

The leaders of Barclays, Citigroup, and the Carlyle Group all fretted that the strongest global economy since 2011 was leaving financial markets complacent...

Citigroup Chief Executive Officer Michael Corbat fears the violence of the next inevitable downturn... and worries about the ignorance of surging debt costs...

"There is a numbness out there, there is an ambivalence out there that's concerning,"

"When the next turn comes -- and it will come -- it's likely to be more violent than it would otherwise be if we let some pressure off along the way."