Nintendo's stock has soared following news that it's holding a major 3DS event in Tokyo on 13th September, just before Tokyo Game Show kicks off.
According to Andriasang, Nintendo is planning on announcing an "extremely big" title around that time - presumably at the Tokyo event.
As noted by Gamasutra, the company's stock shot up 8.4 per cent to ¥13,100 on news of the conference, which will be confined to trade and media.
Maybe those investors know something we don't. A new Monster Hunter? Pokémon? Dragon Quest? Steel Diver 2? Place your bets.