AS part of its continuing drive to improve its coverage and analysis of economic and business news in China, Business Post will launch two features this week. From tomorrow, the section will include the daily closing prices and details of the trading performance of all A shares listed in Shenzhen. With information supplied by Telerate, the service complements the statistics and reports on all other listed stocks traded on the Shenzhen and Shanghai exchanges. And, from today, we will start the weekly tracking of a new index focusing on China concept stocks listed on global exchanges. Compiled by Peregrine Brokerage, the index has 30 components including all 19 B shares listed in Shanghai and Shenzhen. Peregrine's research department has also included some companies that derive a large part of their earnings from China but are listed abroad. Ten companies listed in Hongkong that have or derive at least 20 per cent of their sales, assets or earnings from China, and New York-listed Brilliance China Automotive Holdings, have been included in the Peregrine Greater China Index. Peregrine expects the index to expand to take in companies listed in Taiwan, Singapore and South Korea, along with those state-owned Chinese companies seeking to list on foreign exchanges such as Hongkong. China's B shares account for less than 20 per cent of the total market capitalisation of the Peregrine index components, reflecting the fledgling state of the mainland stock market. Bouts of profit-taking among selected Hongkong-listed China concept stocks pulled the index down by 3.1 per cent last week in US dollar terms. Shanghai B shares fell 2.9 per cent on heavy turnover, with prices seeming to be firming at existing levels, while Shenzhen remained closed for an extended Lunar New Year holiday.