Tokyo issues opened higher Wednesday following buoyant overnight U.S. market boosted by upbeat U.S. economic data. At 9:15 a.m. local time, the 225-issue Nikkei Stock Average was up 33.85 points, or 0.23 percent, from Tuesday to 14,670.37. The broader Topix index of all First Section issues on the Tokyo Stock Exchange was up 5.15 points, or 0.43 percent, to 1,200. 26.