CMS Energy Corporation (CMS) ownership: Top institutional holder: VANGUARD GROUP INC ($2.84B). Insider activity: Net Seller (0 buys, 20 sells). 6 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 40672292.00 | $2.84B | 2025-12-31 |
| BlackRock, Inc. | 33563574.00 | $2.60B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 19877297.00 | $1.54B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 18793345.00 | $1.46B | 2026-03-31 |
| STATE STREET CORP | 18099033.00 | $1.40B | 2026-03-31 |
| JPMORGAN CHASE & CO | 15839684.00 | $1.22B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 8528153.00 | $659.20M | 2026-03-31 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 8135227.00 | $631.13M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.