Dec 5 : NEXTDC Ltd said on Friday it inked a memorandum of understanding with ChatGPT maker OpenAI to collaborate on the development of a hyperscale AI campus and graphics processing unit supercluster in Sydney, boosting its shares. Shares of the Queensland-headquartered data centre operator rose as much as 10.9 per cent to A$14.900 by 2312 GMT, its highest level since November 13. The stock was the top gainer on the broader benchmark index, which fell 0.3 per cent. The project will be located