keywords: nikkei stocks shares percent investors
text: Nikkei Up 1.6 Percent by on Wall St Jump  TOKYO (Reuters) - Japan's Nikkei average rose 1.62 percent  by midsession on Thursday as investors, cheered by a jump in  U.S. stocks, bought a broad range of shares including those  they had avoided recently due partly to doubts about U.S.  demand.