UBS is set to give shareholders more insight into how it nearly collapsed under the weight of billions in toxic securities in 2008, but the Zurich-based bank's efforts to quell fury with former managers may fall short of some investors' expectations.

UBS chairman Kaspar Villiger will present shareholders today with a "transparency report" addressing UBS' financial losses during the global meltdown, but also detail problems linked to providing hidden offshore accounts to wealthy Americans.