Nikkei opened 0.11 pct lower Wednesday.At 9:15 a.m., the 225-issue Nikkei Stock Average was down 15.37 points, or 0.11 percent, from Tuesday at 14,457.53. The broader Topix index of all First Section issues on the Tokyo Stock Exchange was up 0.97 point, or 0.08 percent, at 1,197. 86.