 TORONTO, March 16, 2021 PRNewswire -- Thomson Reuters TSXNYSE: TRI will host its 2021 Investor Day virtually today beginning at 8:30 am EDT. The companys senior management team will deliver a series of presentations outlining the companys Change Program and how the program is designed to transition Thomson Reuters from a holding company to an operating company, and from a content company to a content-driven technology company. 