HONG KONG—Asian shares rallied on Friday after two days of losses, but were still in a nervous mood as global investors grapple with how best to interpret central banks’ cautious moves to end stimulus, which also left currency markets quiet. MSCI’s broadest index of Asia-Pacific shares outside Japan, gained 0.47 percent in early trading, but is still down around 0.8 percent compared to last week’s close, in line with the global trend. Japan’s Nikkei rose 0.25 percent, and U.S. stock futures, the S&P 500 e-minis, were flat. Australia gained 0.4 percent as mining stocks rose after aluminium prices hit multi-year highs, and Chinese blue chips also advanced 0.5 percent. But gains were lead by Hong Kong with the local benchmark rebounding 1.5 percent having fallen over 2 percent the day before when Chinese tech stocks took another battering after authorities called gaming firms in for a word. But traders are …