OSAKA -- The total value of transactions on the Nasdaq Japan stock exchange plunged 55.5 percent in September from the previous month to 12.7 billion yen, its lowest level since the market opened on June 19, 2000, the Osaka Securities Exchange said Monday.

The seventh straight monthly decline marks a hefty 90.1 percent drop from the same month a year ago, the OSE said, noting that trading volume fell 28.2 percent to 2.92 million shares in September.

Despite the listing of six new stocks, including Amuse Inc., activity slowed in line with the overall lackluster performance of Japanese stock markets, it said.

Individual investors, who account or 60 percent of the total transactions on Nasdaq Japan, have been reluctant to trade since the Sept. 11 attacks in the United States and the recent collapse of major retailer Mycal Corp., OSE officials said.

The OSE's first section saw its monthly trading volume drop 14.9 percent to 805.69 million shares, while the value of transactions fell 31.6 percent to 1.196 trillion yen.