Shares in the Japanese company Nintendo have seen a stellar rise since the release of their augmented reality game Pokemon Go, gaining more than 50% since the release last week.
Shares jumped 16% on Thursday, making an overall increase of 56% since trading closed on Friday.
Pokemon Go players search locations in the real world to find virtual Pokemon creatures on their smartphone screens.
The game has become a global phenomenon since its release.
It topped the app store download chart on both iPhone’s App Store and Google Play just days after its initial release in the US, Australia and New Zealand.