Asia’s benchmark stock index swung between gains and losses as data showed China’s trade surplus narrowed and investors awaited a report on U.S. payrolls.

Nikkei 225 15,912.06 +31.73 +0.20%

S&P/ASX 200 5,312.38 -12.03 -0.23%

Shanghai Composite 2,014.54 -13.08 -0.65%

Luk Fook Holdings  Ltd., a jewelry retailer, slumped 11 percent in Hong Kong after its rating was cut at Credit Suisse Group AG on slowing sales momentum.

Mitsubishi Materials Corp., which processes metals, dropped 1.6 percent in Tokyo as it plans to halt a plant’s operation after an explosion.

Dainippon Sumitomo Pharma Co., which has the distribution rights in Japan and China for a liver-disease drug developed by Intercept Pharmaceuticals Inc., jumped 17 percent after a clinical trial proved successful.