Tokyo stocks opened higher Friday, boosted by buying of Nikkei heavyweight Fast Retailing after the Uniqlo clothing chain operator released favorable earnings the previous day. In the first 15 minutes of trading, the 225-issue Nikkei Stock Average rose 111.27 points, or 0.28 percent, from Thursday to 39,492.16. The broader Topix index was up 4.21 points, or 0.16 percent, at 2,716.88. On the top-tier Prime Market, gainers were led by bank, insurance and nonferrous metal issues. At 9 a.m., the U.S. dollar fetched 148.71-72 yen compared with 148.54-64 yen in New York and 149.00-02 yen in Tokyo at…