TOKYO, Aug. 15 (Xinhua) -- Tokyo stocks opened essentially flat Wednesday as buying on Wall Street's upbeat performance overnight was offset by selling amid ongoing concerns about Turkey's financial crisis, which has been punctuated by Turkish President Recep Tayyip Erdogan threatening to boycott U.S. electronic goods.

As of 9:15 a.m. local time, the 225-issue Nikkei Stock Average shed 39.31 points, or 0.18 percent, from Tuesday to 22,316.77.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, edged up 0.98 points, or 0.06 percent, at 1,711.93.

Metal product, air transportation and house financial stock issues comprised notable decliners, while mining, marine transportation, and electric power and gas issues comprised those that gained the most.?