If the only thing Sony made was the PlayStation line, then yeah, it would be difficult to call that a coincidence. But Sony has recording studios, movie studios, medical equipment, TV's, phones, a huge array of other consumer electronics, various video games (lots for the PC), PC's, and oh yeah, the PlayStation and the PSP/Vita.

And as noted elsewhere, the price started moving only 5 minutes into the presentation, way before anything of substance was announced.

Although this thread is pretty old, I just saw something that reiterated my earlier point, Sony's insurance arm accounts for over 60% of the company's profits: http://www.nytimes.com/2013/05/28/business/global/sonys-brea...

There's no way a stock movement of that size had anything to do with the Xbox.

But it looks like it still is :/ Stocks are complex creatures. Jumping to conclusions often ends up leading investors into trouble.

Denial? That kind of insults are not welcome on HN.

Anyway, take a look at this. http://www.bloomberg.com/news/2013-05-21/sony-jumps-on-repor...