Unigroup Guoxin Microelectronics climbs on share buyback plan
** Shares of Unigroup Guoxin Microelectronics 002049.SZ climb 2.5% in the second rising session to 49.15 yuan, on course for the biggest one-day pct gain since October 23
** China-based integrated circuit chip design and service group says its board approves proposal to repurchase A shares for 500 million yuan to 700 million yuan ($75.21 million to $105.29 million)
** CES CN Semiconductor Index .CSI990001 falls 2.7%
** YTD, stock down 37.9%, benchmark CSI300 Index .CSI300 down 13.3%
($1 = 6.6480 Chinese yuan renminbi)