"It can also create opportunities for arbitrage that might undermine stricter bank regulation and lead to a build-up of additional leverage and risks in the overall financial system," the FSB said in a statement."Short-term deposit-like funding of non-bank entities can lead to 'runs' in the market if confidence is lost," the FSB said.

The FSB is pursuing a two-pronged approach to regulating the sector -- the banks that support it and the shadow-banking entities themselves.