# CMS ENERGY CORP NOTE 3.375% 5/0

CMS ENERGY CORP NOTE 3.375% 5/0 is a security (CUSIP 125896BX7) tracked across SEC portfolio filings. 61 institutional managers reported $669.0M on Form 13F as of 2026-06-30; 18 registered fund positions totaling $85.3M via N-PORT as of 2026-05-31.

## Summary

- Issuer: CMS ENERGY CORP
- Class: NOTE 3.375% 5/0
- CUSIP: 125896BX7
- Asset category: DBT
- 13F holders: 61
- 13F value: $669.0M
- 13F period: 2026-06-30
- N-PORT fund positions: 18
- N-PORT value: $85.3M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 61 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Calamos Advisors LLC](https://search.stillhousedata.com/firm/105758) | NAPERVILLE, IL | $85.9M | 76,823,000 |
| ADVENT CAPITAL MANAGEMENT /DE/ | NEW YORK, NY | $85.0M | 74,231,000 |
| Aequim Alternative Investments LP | MILL VALLEY, CA | $79.2M | 70,000,000 |
| Universal- Beteiligungs- und Servicegesellschaft mbH | FRANKFURT AM MAIN, 2M | $69.6M | 61,974,000 |
| BlackRock, Inc. | New York, NY | $57.1M | 50,525,000 |
| VICTORY CAPITAL MANAGEMENT INC | San Antonio, TX | $50.6M | 44,768,500 |
| [TENOR CAPITAL MANAGEMENT Co., L.P.](https://search.stillhousedata.com/firm/153277) | NEW YORK, NY | $30.9M | 27,000,000 |
| [SHENKMAN CAPITAL MANAGEMENT INC](https://search.stillhousedata.com/firm/112192) | NEW YORK, NY | $22.4M | 19,511,000 |
| STATE STREET CORP | BOSTON, MA | $19.5M | 17,036,000 |
| Wellesley Asset Management | WELLESLEY, MA | $15.2M | 13,390,000 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $14.0M | 12,346,000 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Paris, I0 | $12.6M | 11,000,000 |
| [Polar Asset Management Partners Inc.](https://search.stillhousedata.com/firm/162681) | TORONTO, A6 | $11.3M | 10,000,000 |
| FRANKLIN RESOURCES INC | San Mateo, CA | $10.2M | 8,996,000 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | FRANKFURT AM MAIN, 2M | $9.7M | 8,600,000 |

## Top fund holders (N-PORT)

_Showing 15 of 18 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| CALAMOS STRATEGIC TOTAL RETURN FUND | CALAMOS STRATEGIC TOTAL RETURN FUND | $18.6M | 53.53% |
| [Calamos Market Neutral Income Fund](https://search.stillhousedata.com/fund/S000004062) | CALAMOS INVESTMENT TRUST/IL | $16.8M | 9.54% |
| CALAMOS CONVERTIBLE & HIGH INCOME FUND | CALAMOS CONVERTIBLE & HIGH INCOME FUND | $10.4M | 101.19% |
| CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | $9.8M | 101.20% |
| [Putnam Convertible Securities Fund](https://search.stillhousedata.com/fund/S000005511) | Putnam Convertible Securities Fund | $6.2M | 111.24% |
| Bancroft Fund Ltd | Bancroft Fund Ltd | $4.5M | 327.76% |
| Ellsworth Growth & Income Fund Ltd | Ellsworth Growth & Income Fund Ltd | $4.5M | 264.87% |
| Calamos Dynamic Convertible & Income Fund | Calamos Dynamic Convertible & Income Fund | $4.2M | 61.34% |
| Advent Convertible & Income Fund | ADVENT CONVERTIBLE & INCOME FUND | $3.2M | 54.05% |
| [Global Opportunities Portfolio](https://search.stillhousedata.com/fund/S000027417) | Global Opportunities Portfolio | $2.7M | 2.04% |
| Gabelli Convertible & Income Securities Fund Inc | Gabelli Convertible & Income Securities Fund Inc | $2.5M | 298.33% |
| [BNY Mellon Core Plus Fund](https://search.stillhousedata.com/fund/S000059721) | BNY Mellon Absolute Insight Funds, Inc. | $785K | 3.09% |
| [Putnam Diversified Income Trust](https://search.stillhousedata.com/fund/S000005529) | Putnam Diversified Income Trust | $428K | 4.65% |
| [Calamos Growth & Income Portfolio](https://search.stillhousedata.com/fund/S000006427) | CALAMOS ADVISORS TRUST/IL | $220K | 69.94% |
| Putnam Premier Income Trust | Putnam Premier Income Trust | $126K | 3.53% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/125896BX7.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.