Credit Suisse on Tuesday appointed Goldman Sachs partner David Wildermuth its new chief risk officer, as it seeks to turn the corner on the Archegos and Greensill scandals that have rocked Switzerland's second-biggest bank. Zurich-based Credit Suisse has been cutting risk after its prime brokerage business lost billions from the collapse of family office Archegos, and as its asset management division scrambles to return some $10 billion of client investments linked to insolvent supply chain finance firm Greensill.