Soundwave on 29 January 2014
It was going up because of the stock buy back. Generally speaking any time a company initiates a stock buy back, the stock price will always rise.
It's now going back down because investors are upset with Nintendo's investor briefing:
The ire of investors may be growing. Nintendo’s stock is now off 4%, worse than a 3.2% fall in the benchmark Nikkei Stock Average. (Wallstreet Journal).
