China's foreign exchange regulator has granted a combined $2.8 billion of quotas to Qualified Foreign Institutional Investors, known as QFII, in October.

That marks the biggest sum of approved quotas for a single month, and almost matches the total number given out during the third quarter. By the end of October, 192 institutions have been awarded more than $33 billion.

Analysts say if the current $80 billion quota limit is reached, the ceiling will be lifted again. China has been actively promoting the QFII scheme and also held roadshows around the world to attract more foreign investors.