Tokyo stocks opened 0.57 percent higher on Thursday as US stocks turned in a mixed performance following Boeing\'s latest problem with its next-generation Dreamliner aircraft. The Nikkei 225 index at the Tokyo Stock Exchange was up 60.5 points at 10,660.94 at the start. Market participants were trying to gauge whether the yen\'s recent weakening would continue, Yoshihiro Okumura, general manager of research at Chibagin Asset Management, told Dow Jones Newswires. \"Some caution was raised by policy makers against the yen\'s weakening,\" he said. \"Still, with the dollar/yen where it is now, selloffs in stocks like Wednesday are unlikely.\" Tokyo ended down 2.56 percent on Wednesday. The yen rebounded Tuesday after Japan\'s economy minister warned over the currency\'s rapid decline, saying it could hit consumers by making imported goods more expensive. The dollar was at 88.73 yen against 88.37 yen in New York Wednesday afternoon. The euro bought 117.90 yen and $1.3282 early Thursday, against 117.42 yen and $1.3286 in US trade. US stocks turned in a mixed performance overnight, as Boeing\'s latest problem with its 787 Dreamliner overshadowed strong earnings from leading banks. The Dow Jones Industrial Average finished down 23.66 points, or 0.17 percent, at 13,511.23.