Thanks to the Wii and DS, the total value of Nintendo stock is now higher than that of its Japanese rival.
Word from Japan is that Nintendo's total market value has surpassed that of Sony. (Market value refers to the number of total company shares held by all investors times the value of each share, or simply, the sum of all the money invested in a company.) According to a Bloomberg report, Nintendo's value is 6.57 trillion yen ($53.2 billion), while Sony has a value of 6.48 trillion yen ($52.5 billion).
Realize that we're talking the companies as a whole, here. Sony is a company that does business in arenas outside of the game industry, and because of its involvement in consumer electronics it takes in eight times the revenue as Nintendo. Yet, Nintendo, with its mighty Wii and DS, is now a more valuable company to invest in.
For the curious, the market value of Microsoft is something in the neighborhood of $282 billion, which is around 5 times that of Sony or Nintendo.