Tokyo stocks opened higher Monday following modest gains on Wall Street as investors appeared to shrug off data confirming the Japanese economy has slipped into its first recession since 2015. The benchmark Nikkei 225 index rose 0.45 percent or 90.57 points to 20,128.04 in early trade while the broader Topix index was up 0.39 percent or 5.68 points at 1,459.45. mis/ric/axn