Japanese stocks fall, Olympus plunges on outlook

(Updates to midsession)

TOKYO, Feb 5 (Reuters) - Japanese stocks fell on Tuesday, with Olympus Corp (7733.T: Quote, Profile, Research, Stock Buzz) plunging 13.9 percent on a weak outlook, helping sour the market sentiment.

Yahoo Japan Corp (4689.T: Quote, Profile, Research, Stock Buzz) jumped for a second day following Microsoft Corp's (MSFT.O: Quote, Profile, Research, Stock Buzz) $44.6 billion bid for Yahoo Inc (YHOO.O: Quote, Profile, Research, Stock Buzz).

The benchmark Nikkei average .N225 ended the morning session down 1.2 percent at 13,688.01. The broader TOPIX index lost 1.1 percent to 1,349.63. (Reporting by Taiga Uranaka)