The nation's securities regulator, central bank and foreign exchange manager announced on Friday an expansion in the quota for the qualified foreign institutional investor program to $150 billion from $80 billion.

Also, the pilot program for the renminbi QFII or RQFII will now include Singapore and London, with Hong Kong and Taiwan having joined the plan, the China Securities Regulatory Commission said.

"The current investment position of foreign institutions is stable", and an increasing number of investors have shown an interest in expanding their quotas, a CSRC spokesman said.