April 05, 2021 7:35 AMCredit Suisse's losses from the collapse of Archegos may reach into the billions. : ZURICH (BLOOMBERG) - Credit Suisse Group leaders are discussing replacing chief risk officer Lara Warner while sparing chief executive officer Thomas Gottstein as they tally losses that could reach into the billions from the collapse of Archegos Capital Management, according to people briefed on the matter. The bank is set to give investors an update on the Archegos fallout, including the fate of top executives such as investment bank chief Brian Chin, two of the people said.