The Shenzhen Composite Index is the total value of A-shares and B-shares that are traded on the Shenzhen stock exchange. Along with the larger Shanghai stock exchange, the Shenzhen makes up the other half of the only two independently operated exchanged on mainland China. Hong Kong’s Hang Seng is the other major Chinese stock exchange.
While the Shenzhen is smaller than the Shanghai exchange, it opened up the ChiNext (ticker CNXT), a NASDAQ-style exchange that consists of high-tech startups and innovative “hot” companies.
The Shenzhen composite index is different from the Shenzhen component index, which consists of 40 companies that are traded on the Shenzhen exchange. Like the Shanghai exchange, the Shenzhen also classifies share as A-share and B- shares. A-share are priced in Chinese yuan and restricted to Chinese traders. B-shares are priced in foreign currencies and foreigners are allowed to trade B-shares, which is highly regulated by the Chinese government. On the Shenzhen stock market, B-shares are priced in Hong Kong dollars.