Sumitomo Mitsui Trust Group Inc. has made numerous transactions involving 75 different companies across various sectors. The group has bought and sold shares, increased and decreased holdings, and adjusted positions in companies such as SoFi Technologies, Reliance, Akamai Technologies, and Docusign. Notable investments include Grab Holdings, Dynatrace, and KE Holdings Inc., while significant sell-offs occurred in companies like Bunge Global, Paycom Software, and LKQ Corporation. The group's holdings range from $24.40 million to $36.43 million in companies like Assurant, Interpublic Group, and TransUnion.