Nintendo shares reached a three-month high today, ending the day gaining 4.15 percent on the Tokyo Stock Exchange (via Reuters).
The Wii U has struggled so far, selling 3.91 million units across the world since launch in November 2012. Nintendo plans to spur hardware sales by releasing marquee first-party games like Super Mario 3D World and Mario Kart 8 and Super Smash Bros. in 2014.
Today was also a big day for Microsoft, which released the Xbox One across 13 territories. Microsoft will need to sell at least 1 million systems today to match the performance of Sony's PlayStation 4, though it should be noted that the PS4 is currently only available in North America.