In the first two installments, I exposited Janus Capital Group, Inc. v. First Derivative Traders, 564 U.S. 135 (2011), and Lorenzo v. S.E.C., 587 U.S. ___, 139 S. Ct. 1094 (2019), respectively, both essential to understanding S.E.C. v. Rio Tinto PLC, 41 F.4th 47 (2d Cir. 2022), the U.S. Court of Appeals for the Second Circuit's most recent holding regarding Rule 10b-5 "scheme" liability. See 17 C.F.R. §240.10b-5.