CMS Energy Corporation (CMS) Shareholders & Insider Trades
CMS Energy shareholders at a glance
The largest holder of CMS Energy stock is BlackRock Advisors LLC, with 26.7 million shares (8.50% of the company), worth about $1.82 billion as of September 25, 2026. The 10 largest holders together own 47.0%.
In Q2 2026, 834 institutional holdings reports listed shares worth $24.60 billion.
Insiders reported 83 transactions in the last two years: 14 sales worth $5.35 million and 1 purchase. The newest one on file is from May 8, 2026 (Sznewajs John G, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 8, 2026.
CMS Energy Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest CMS Energy shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 26.7 million | 8.50% | $1.8B |
| Vanguard Capital Management LLC | 20.2 million | 6.43% | $1.4B |
| Vanguard Portfolio Management LLC | 19.1 million | 6.08% | $1.3B |
| State Street Corporation | 17.7 million | 5.65% | $1.2B |
| JPMorgan Investment Management, Inc. | 16.4 million | 5.23% | $1.1B |
| Wellington Trust Co., NA | 12.2 million | 3.88% | $827.0M |
| Union Investment Institutional GmbH | 10.7 million | 3.42% | $731.0M |
| Geode Capital Management LLC | 8.7 million | 2.79% | $595.0M |
| DWS Investment Management Americas, Inc. | 8.1 million | 2.58% | $550.0M |
| Invesco Advisers, Inc. | 7.6 million | 2.43% | $518.0M |
As of September 25, 2026.
CMS Energy institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 834 | – | $24.6B |
| Q1 2026 | 819 | 298.0 million | $23.1B |
| Q4 2025 | 825 | 295.0 million | $20.6B |
| Q3 2025 | 800 | 308.0 million | $22.6B |
| Q2 2025 | 769 | 297.0 million | $20.6B |
| Q1 2025 | 758 | 289.0 million | $21.7B |
| Q4 2024 | 736 | 286.0 million | $19.0B |
| Q3 2024 | 732 | 314.0 million | $22.1B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
CMS Energy insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Sznewajs John G | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Butler Deborah H | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Soto Myrna M | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Tanski Ronald J | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Izzo Ralph | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Wright Laura H | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Russell John G. | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Leopold Diane | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Shank Suzanne F | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Keyes Richard Patrick | May 8, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Rochow Garrick J | Mar 26, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Hayes Rejji P | Mar 26, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 83 insider transactions in the last two years.
Questions and answers
Who owns the most CMS Energy stock?
BlackRock Advisors LLC, with 8.50% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.43%) and Vanguard Portfolio Management LLC (6.08%).
How many institutions own CMS Energy stock?
834 institutional holdings reports listed CMS Energy shares in Q2 2026 worth $24.60 billion.
Are CMS Energy insiders buying or selling the stock?
In the last two years insiders reported 14 sales and 1 purchase (83 transactions in all); the newest on file is from May 8, 2026.
