Japan's Nikkei Stock Average finished slightly lower on Tuesday, affected by earnings reports and global uncertainty. Nikkei 225 index edged down 0.08% or 7.17 points at 8,922.03. Dainippon Screen tumbled 7% and Suzuki Motor fell 1.8% on worse than expected earnings reports. On the upside Nikkei index was supported by shipping companies Mitsui O.S.K. Lines and Nippon Yusen K.K, which added 2.2% and 2.4% respectively. Japan Tobacco appreciated 5.4% on its raised sales predictions, while Toyota Motors traded flat before issuing its upward revised revenue forecasts.