1455 GMT - Investors await Nvidia's earnings due to be released on Aug. 26 to provide insights on the strength and broadness of demand for AI, UBS Global Wealth Management's Mark Haefele says in a note. This comes as some investors worry about circular financing in the AI industry, Haefele says. Nvidia has teamed up with big financial institutions to create a financing package of over $500 billion for AI expenditure. This initiative "has raised questions about circularity when suppliers help finance purchases within their own ecosystem," Haefele says.