# CALAMOS ETF TR S&P 500 STRUCTU

CALAMOS ETF TR S&P 500 STRUCTU is a security (CUSIP 12811T795) tracked across SEC portfolio filings. 33 institutional managers reported $26.7M on Form 13F as of 2026-06-30.

## Summary

- Issuer: CALAMOS ETF TR
- Class: S&P 500 STRUCTU
- CUSIP: 12811T795
- 13F holders: 33
- 13F value: $26.7M
- 13F period: 2026-06-30
- N-PORT fund positions: 0

## Top institutional holders (Form 13F)

_Showing 15 of 33 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Calamos Advisors LLC](https://search.stillhousedata.com/firm/105758) | NAPERVILLE, IL | $9.6M | 359,149 |
| [Calamos Wealth Management LLC](https://search.stillhousedata.com/firm/143490) | NAPERVILLE, IL | $2.4M | 88,023 |
| [COMMONWEALTH EQUITY SERVICES, LLC](https://search.stillhousedata.com/firm/8032) | WALTHAM, MA | $1.6M | 58,264 |
| [New England Capital Financial Advisors LLC](https://search.stillhousedata.com/firm/109203) | MERIDEN, CT | $1.5M | 54,586 |
| [BURKETT FINANCIAL SERVICES, LLC](https://search.stillhousedata.com/firm/140168) | ROCK HILL, SC | $1.4M | 51,373 |
| [LPL Financial LLC](https://search.stillhousedata.com/firm/6413) | FORT MILL, SC | $1.1M | 44,090 |
| [Advisor OS, LLC](https://search.stillhousedata.com/firm/287792) | CHICAGO, IL | $1.1M | 41,476 |
| [STOLZ & ASSOCIATES, PS](https://search.stillhousedata.com/firm/117216) | TACOMA, WA | $1.1M | 40,039 |
| [Cyr Financial Inc.](https://search.stillhousedata.com/firm/277118) | HENNEPIN, IL | $1.0M | 37,495 |
| [Creative Planning](https://search.stillhousedata.com/firm/105348) | Overland Park, KS | $701K | 27,060 |
| [Blue Water Asset Management](https://search.stillhousedata.com/firm/175362) | GRAND RAPIDS, MI | $667K | 24,974 |
| [SageView Advisory Group, LLC](https://search.stillhousedata.com/firm/126777) | NEWPORT BEACH, CA | $597K | 22,921 |
| [Cetera Investment Advisers](https://search.stillhousedata.com/firm/105644) | SCHAUMBURG, IL | $450K | 17,367 |
| Claro Advisors Inc. | BOSTON, MA | $421K | 15,776 |
| [OLD MISSION CAPITAL LLC](https://search.stillhousedata.com/firm/146991) | CHICAGO, IL | $413K | 15,954 |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/12811T795.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.