The China Securities Regulatory Commission is developing rules and tools to raise the inclusion factor for yuan-denominated stocks, or China A shares, in MSCI indexes to 15% from 5% "as soon as possible," China Daily reported June 14, citing Vice Chairman Fang Xinghai.

Reforms include the stock-closing-price formation mechanism, stock trading halt and resuming rules, Fang said in a financial forum in Shanghai.

Index publisher MSCI Inc. included 226 China large-cap A shares on its MSCI Emerging Markets Index and other indexes as of the end of May. The stocks, at a partial inclusion factor of 2.5%, have an aggregate weight of 0.4%.

The second phase of the inclusion in September will boost the factor and weighting to 5% and 0.79%, respectively.

MSCI indexes are followed by global funds at an estimated amount of $3.7 trillion, China Daily said.