Opened Lower after US market's Fall

Opened very low level after US market's drop, but from around 10:30 to the last stage of today, Nikkei rose and back to 17800 level. Nikkei 225 Futures finally ended at 17730.It looks like 25MAline pressed down the upward momentum.

Stock Indices
Nikkei225Average O. 17631.87 H. 17781.41 L.. 17591.93 C. 17732.77 CHG. -28.14
TOPIX O. 1737.45 H. 1749.76 L.. 1731.41 C. 1745.92 CHG. -5.7 VOL. 211931
JASDAQ O. 79.26 H. 79.56 L.. 78.99 C. 79.56 CHG. 0.01 VOL. 20308

Stock Index Futures
Nikkei225Futures O. 17650 H. 17800 L.. 17610 C. 17730 CHG. -70 VOL. 101893
TOPIX Futures O. 1737.5 H. 1751 L.. 1732 C. 1745 CHG. -10.5 VOL. 43185