VGZ ▲ +12.8% - Vista Gold Corp. $VGZ Artemis Gold Agrees to Acquire Vista Gold, Adding an Advanced Stage Gold Development Asset in Australia Vista Gold shares rose 12.8% after Artemis Gold agreed to acquire the company, gaining access to an advanced-stage gold development asset located in Australia. The acquisition represents a significant value recognition event for Vista Gold shareholders, as the deal provides clarity on monetization of the company's development-stage project. 21-SEP-2026 06:46 AM ET