Nintendo and Sony have both seen their stock prices rise following today’s Xbox One announcement from Microsoft. Nintendo saw a rise of around 2.2 percent, while Sony saw a rise of 9.3 percent. (On the other hand, stock went down 0.2% for MS.)

We should remember that Nintendo’s shares also rose when Sony hosted the PlayStation 4 presentation in February. On February 22nd Sony’s U.S shares were down 2.7 percent to $14.08 by mid-day, with Nintendo’s shares up 2 percent to $11.79.

http://mynintendonews.com/2013/05/21/nintendo-and-sony-stock-prices-rise-after-xbox-one-announcement/

A 9.3% rise isnt a coincidance.

It can't be a coincidance.

Nintendo doesn't have any other place to go but up, like a helium balloon!

Conference wasnt that bad. But all the info revealed afterwards has been seriously negative.

The simple fact is that reality never meets the expectations of unbridled fancy. While there are a few red flags in the Xbox One stuff, this probably would have happened anyway, because what you show will never be as good as what it "could have been."

Edit: Sony could also well be floating on that whole "spin off the Entertainment Division" thing.