TOKYO -- Japan's stock market is throwing up red flags signaling downside risk, with short positions building up and far more stocks rising than falling.
The Nikkei Stock Average started out Wednesday up slightly, but closed down for the first time in six trading days. Selling weighed on the market, spurred by concerns about short-term overheating. Profit-taking also played a role, since the index had climbed 616 points over the five trading days through Tuesday.
