*HSI +1 pct, H-shares +1.5 pct, CSI300 +1 pct* Jiangxi Copper jumps as Shanghai copper futures soars* COSL lifted by DB upgrade on improved growth prospects* Sa Sa buoyed by strong sales over Labour Day holiday By Clement Tan and Yimou Lee.
*Jefferies raises price target to $25 from $23; rating buy. Reuters Station users, click. 1568. Reuters Station users, click. 4899.
Unusual volume can signal that hedge funds and momentum traders are buying ahead of a catalyst. TheStreet.com reports.