Japanese shares tumbled as a swathe of companies traded without the right to the next dividend payment, while other equity benchmarks put in a mixed performance Friday. Treasuries held gains ahead of U.S. inflation data. Shares in Seoul and Hong Kong fell, while Australian equities gained and China was flat. The S&P 500 ended modestly lower after the release of a whistle-blower complaint central to the latest political drama and reports that the U.S. is unlikely to extend a waiver allowing American firms to supply China’s Huawei Technologies. Ten-year Treasury yields traded just under 1.7%. Oil is around $56 a barrel in New York trading. - Bloomberg