Last updated Aug 21, 2026
CMS (CMS) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in CMS. Across our datasets, 2 superinvestors hold CMS, 2 members of Congress have traded it, and 2 insider buys are on record.
Notable holders include George Soros and Peter Thiel. Active congressional traders include Ro Khanna and Julie Johnson.
Key takeaways