The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.

Yamada Denki is one of the consumer electronics retailer chains in Japan. It also sells other products including books. The company was founded in 1973 as a privately owned store. Yamada Denki Ltd.

The Azerbaijani government has ordered the suspension of BBC News' Azerbaijani operation in the capital city, Baku. The BBC said in a statement on Thursday that it had made the "reluctant decision ...