Tokyo stocks were higher in early trading Friday, tracking overnight gains on Wall Street, while the yen’s weakness against the U.S. dollar supported some export-oriented shares. In the first 15 minutes of trading, the 225-issue Nikkei Stock Average rose 212.30 points, or 0.54 percent, from Thursday to 39,553.84. The broader Topix index was up 15.52 points, or 0.56 percent, at 2,809.22. On the top-tier Prime Market, gainers were led by insurance, bank, and marine transportation issues. At 9 a.m., the U.S. dollar fetched 160.69-72 yen compared with 160.72-82 yen in New York and 160.54-56 yen in…