Mark Mobius, Emerging Markets Fund Manager and founder at Mobius Capital Partners, Munich (May 7):
"It would be very unlikely for them to cut into negative territory. A significant segment of the American population has their life savings in bank accounts, not in stocks or bonds or funds, and if they get into negative rates, there will be incredible political consequences. People are already concerned about low rates of interest they are getting in the bank. The whole economic system is being distorted as a result of these moves by central banks. In Japan, they are buying government bonds, corporate bonds, ETFs, stocks. This is getting completely crazy."