# CALAMOS ETF TR S&P 500 STRUCT

CALAMOS ETF TR S&P 500 STRUCT is a security (CUSIP 12811T787) tracked across SEC portfolio filings. 21 institutional managers reported $14.4M on Form 13F as of 2026-06-30.

## Summary

- Issuer: CALAMOS ETF TR
- Class: S&P 500 STRUCT
- CUSIP: 12811T787
- 13F holders: 21
- 13F value: $14.4M
- 13F period: 2026-06-30
- N-PORT fund positions: 0

## Top institutional holders (Form 13F)

_Showing 15 of 21 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Calamos Advisors LLC](https://search.stillhousedata.com/firm/105758) | NAPERVILLE, IL | $9.6M | 373,266 |
| [Cetera Investment Advisers](https://search.stillhousedata.com/firm/105644) | SCHAUMBURG, IL | $952K | 38,038 |
| [JIM SAULNIER & ASSOCIATES, LLC](https://search.stillhousedata.com/firm/169889) | FORT COLLINS, CO | $663K | 25,796 |
| Mariner, LLC | Overland Park, KS | $640K | 25,578 |
| [Sterling Financial Planning, Inc.](https://search.stillhousedata.com/firm/108664) | SPARTA, NJ | $625K | 24,970 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $572K | 22,853 |
| [OLD MISSION CAPITAL LLC](https://search.stillhousedata.com/firm/146991) | CHICAGO, IL | $315K | 12,596 |
| TrustBank | OLNEY, IL | $294K | 11,421 |
| [Calamos Wealth Management LLC](https://search.stillhousedata.com/firm/143490) | NAPERVILLE, IL | $286K | 11,125 |
| [HARBOUR INVESTMENTS, INC.](https://search.stillhousedata.com/firm/19258) | MADISON, WI | $234K | 9,337 |
| [Waverly Advisors, LLC](https://search.stillhousedata.com/firm/115332) | BIRMINGHAM, AL | $213K | 8,512 |
| [SageView Advisory Group, LLC](https://search.stillhousedata.com/firm/126777) | NEWPORT BEACH, CA | $41K | 1,629 |
| Essential Investment Partners LLC | ENGLEWOOD, CO | $13K | 500 |
| [TUCKER ASSET MANAGEMENT LLC](https://search.stillhousedata.com/firm/174844) | LITTLETON, CO | $4K | 147 |
| [New England Capital Financial Advisors LLC](https://search.stillhousedata.com/firm/109203) | MERIDEN, CT | $3K | 126 |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/12811T787.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.