OSAKA -- Some U.S. blue chips listed on the U.S. Nasdaq market are likely to be listed on Nasdaq Japan as early as December, sources at the Osaka Securities Exchange said Wednesday.

The stocks of around 20 leading U.S. companies such as Microsoft Corp. and Intel Corp. are likely to be listed by summer next year, the sources said.

Currently, these stocks can only be traded in dollars though U.S. securities firms in Japan or through Japanese brokerages that have branches in the United States.

With the listing, Japanese investors will be able to buy or sell the stocks in yen.

Nasdaq Japan, which is associated with the OSE, is thinking of connecting its market with the U.S. Nasdaq market in the future, but decided to list the U.S. shares in light of the time it would take to establish a computer system, the sources said.

Nasdaq Japan, Japan's version of the U.S. Nasdaq market, was set up in June this year. It is located on the premises of the OSE.

Nasdaq Japan's rivals are the Mothers market, which was set up last November by the Tokyo Stock Exchange, and the over-the-counter market.