ethomaz on 15 March 2013
Just to add the huge stock increase is not only about smartphones...
Sony's PlayStation 4 Plans Attributed to Huge Stock Increase
"The rating increase is widely attributed to Sony's plan to launch the PlayStation 4 at the end of 2013. Likewise, the company's newly launched Xperia Z smartphone has been the top-selling model in Japan for four straight weeks since its release."
PS4 is the huge factor here.
