CSI 300 Index
The CSI 300 is a capitalization-weighted stock market index designed to replicate the performance of 300 stocks traded in the Shanghai and Shenzhen stock exchanges.
The index is compiled by the China Securities Index Company, Ltd..
It has been calculated since April 8, 2005. Its value is normalized relative to a base of 1000 on December 31, 2004.
Criteria
For the index admission must meet certain requirements. These include
a listing of at least three months at the Shanghai or Shenzhen stock exchanges (requirement is waived if daily trading volume is among the top 30 of all A-shares since its listing)
no signs of great volatility in the price history or suspicion of price manipulation
Belonging to the TOP 300 A-shares by market capitalization
Belonging to the most liquid 50 per cent of all A-shares
The ten largest companies in the CSI 300 Index as of 2009
Ping An Insurance Group Co of China Ltd 3.92%
Citic Securities Co Ltd 3.64%
China Merchants Bank Co Ltd 2.98%
China Petroleum & Chemical Group 2.89%