Tokyo stocks opened lower Wednesday, weighed down by selling of technology shares following overnight declines on Wall Street. In the first 15 minutes of trading, the 225-issue Nikkei Stock Average fell 609.73 points, or 1.53 percent, from Tuesday to 39,229.18. The broader Topix index was down 25.35 points, or 0.93 percent, at 2,689.10. On the top-tier Prime Market, decliners were led by precision instrument, machinery, and real estate issues. At 9 a.m., the U.S. dollar fetched 151.53-56 yen compared with 151.48-58 yen in New York and 151.67-69 yen in Tokyo at 5 p.m. Tuesday. The euro was quot…