Asian shares mostly higher, China markets fall back

Asian shares have opened mostly higher although markets in Shanghai and Hong Kong are lower. The advance followed a broad rally on Wall Street, with solid contributions from Big Tech companies, banks and other sectors. The S&P 500 rose 1.4%, while the Dow Jones Industrial Average and the Nasdaq each rose 1.6%. GameStop plunged 60% in the latest wild swing for the stock and several others that have become caught up in a speculative frenzy by online traders seeking to inflict damage on Wall St