Nikkei edges up, may stay in tight range; earnings eyed

Japan's Nikkei stock averageedged up on Monday but is expected to trade in a narrow range asinvestors cautiously await earnings reports this week thatreveal the impact of last month's devastating earthquake oncorporate profits.

The benchmark Nikkei average was up 0.3 percent at9,713.69, while the broader Topix added 0.3 percent to844.98.