BEIJING, Nov. 20 (Xinhua) -- The newly-established Beijing Stock Exchange saw more investors open accounts in its first week of trading, data showed.

After the launch on Monday, the exchange saw 340,000 new qualified accounts during the week, bringing the total number to 4.37 million, the exchange said.

Trading was stable in the first week, with a total turnover of 21.2 billion yuan (3.32 billion U.S. dollars) for 81 listed stocks.

The exchange is a platform serving innovation-oriented small and medium-sized enterprises. The first batch of 81 firms consists of top performers in their respective sectors, boasting sound business operations and great growth potential.

The exchange adopts the registration-based initial public offering system, in line with the Nasdaq-style sci-tech innovation board, also known as the STAR market on the Shanghai Stock Exchange, and the tech-heavy ChiNext market on the Shenzhen Stock Exchange.