# CMS ENERGY CORP (CMSC)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CMSC/

- Reporting holders: 3
- Reported value: $1.3M
- Shares held by institutions: 0 of 313,577,136 outstanding
- Held through calls: 92.8%
- Held through puts: 7.2%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [IMC-Chicago, LLC](https://holderbook.com/funds/1452861-imc-chicago-llc/) | $1.0M | 0 | 0.0% | 3 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $160.7K | 0 | 0.0% | 1 |
| [GROUP ONE TRADING LLC](https://holderbook.com/funds/932540-group-one-trading-llc/) | $91.8K | 0 | 0.0% | 16 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 3 | $1.3M |
| Q1 2026 | 4 | $12.2M |
| Q4 2025 | 4 | $1.3M |
| Q3 2025 | 2 | $790.6K |
| Q2 2025 | 2 | $3.5M |
| Q1 2025 | 2 | $1.7M |
| Q4 2024 | 3 | $3.3M |
| Q3 2024 | 2 | $197.4K |
| Q2 2024 | 2 | $255.4K |
| Q1 2024 | 3 | $3.0M |
| Q4 2023 | 3 | $998.3K |
| Q3 2023 | 3 | $296.9K |