* Nikkei 225 Stock Average: -0.70 (-0.0%) to 15,900.64
* Nikkei 225 futures Osaka: +40 (+0.25%) to 15,910, Singapore (SGX) 15,895, Chicago (CME) 8/21 — 15,830
* TOPIX: -4.99 (-0.3%) to 1,544.89; Advancers 679 x decliners 940 (unch. 107), New highs 2 x new lows 77; 11/33 sectors posted gains
* Jasdaq: -11.05 (-0.6%) to 1,867.33
* Yen weakens slightly (0.3%) against US$, last at 114.82 and 0.5% vs. euro to 154.93