Business Concentration around the World: 1900–2020 Capital Markets Workshop Yueran Ma (Chicago Booth) 11/03/2026 scroll-down Breadcrumb Home Seminars Business Concentration around the World: 1900–2020 Date: Wednesday 11th March 2026Time: 1.00-2.30pmSpeaker: Yueran Ma (Chicago Booth)Seminar Title: Business Concentration around the World: 1900–2020This seminar is by invitation only.