# CALAMOS ETF TR S&P 500 STR SEPT

CALAMOS ETF TR S&P 500 STR SEPT is a security (CUSIP 12811T886) tracked across SEC portfolio filings. 20 institutional managers reported $19.7M on Form 13F as of 2026-06-30.

## Summary

- Issuer: CALAMOS ETF TR
- Class: S&P 500 STR SEPT
- CUSIP: 12811T886
- 13F holders: 20
- 13F value: $19.7M
- 13F period: 2026-06-30
- N-PORT fund positions: 0

## Top institutional holders (Form 13F)

_Showing 15 of 20 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Calamos Advisors LLC](https://search.stillhousedata.com/firm/105758) | NAPERVILLE, IL | $9.6M | 345,128 |
| OSAIC HOLDINGS, INC. | PHOENIX, AZ | $2.8M | 104,344 |
| [Calamos Wealth Management LLC](https://search.stillhousedata.com/firm/143490) | NAPERVILLE, IL | $2.7M | 97,729 |
| [OLD MISSION CAPITAL LLC](https://search.stillhousedata.com/firm/146991) | CHICAGO, IL | $770K | 28,562 |
| Camelot Portfolios, LLC | Maumee, OH | $693K | 24,917 |
| [COMMONWEALTH EQUITY SERVICES, LLC](https://search.stillhousedata.com/firm/8032) | WALTHAM, MA | $570K | 20,483 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $519K | 19,245 |
| [Blue Water Asset Management](https://search.stillhousedata.com/firm/175362) | GRAND RAPIDS, MI | $450K | 16,190 |
| [Grantvest Financial Group LLC](https://search.stillhousedata.com/firm/310272) | MATAWAN, NJ | $329K | 12,212 |
| [HARBOUR INVESTMENTS, INC.](https://search.stillhousedata.com/firm/19258) | MADISON, WI | $312K | 11,556 |
| [Spartan Wealth Advisory Services LLC](https://search.stillhousedata.com/firm/331719) | BINGHAM FARMS, MI | $298K | 10,709 |
| [HOHIMER WEALTH MANAGEMENT, LLC](https://search.stillhousedata.com/firm/300140) | SEATTLE, WA | $219K | 7,878 |
| [Sterling Financial Planning, Inc.](https://search.stillhousedata.com/firm/108664) | SPARTA, NJ | $216K | 8,018 |
| Innovative Asset Advisors Group, LLC | SHELTON, CT | $112K | 4,035 |
| [BURKETT FINANCIAL SERVICES, LLC](https://search.stillhousedata.com/firm/140168) | ROCK HILL, SC | $95K | 3,420 |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/12811T886.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.