21 institutions reported holding $20.6M of CALAMOS ETF TR (CPST) in SEC 13F filings for 2026-06-30. Largest institutional holders: Calamos Advisors LLC ($9.6M), Calamos Wealth Management LLC ($2.7M), OSAIC HOLDINGS, INC. ($2.6M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($1.8M), Camelot Portfolios, LLC ($692,942). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Calamos Advisors LLC | $9.6M | 345,128 | Trimmed |
| 2 | Calamos Wealth Management LLC | $2.7M | 97,729 | Trimmed |
| 3 | OSAIC HOLDINGS, INC. | $2.6M | 94,067 | Trimmed |
| 4 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.8M | 64,209 | Added |
| 5 | Camelot Portfolios, LLC | $692,942 | 24,917 | Trimmed |
| 6 | COMMONWEALTH EQUITY SERVICES, LLC | $569,630 | 20,483 | Hold |
| 7 | FIDUCIARY FINANCIAL ADVISORS | $557,618 | 20,051 | New |
| 8 | Blue Water Asset Management | $450,244 | 16,190 | Trimmed |
| 9 | Capital Analysts, LLC | $383,000 | 13,745 | Hold |
| 10 | Spartan Wealth Advisory Services LLC | $297,817 | 10,709 | Hold |
| 11 | Grantvest Financial Group LLC | $258,494 | 9,295 | Trimmed |
| 12 | Sterling Financial Planning, Inc. | $222,981 | 8,018 | Hold |
| 13 | HOHIMER WEALTH MANAGEMENT, LLC | $219,087 | 7,878 | Trimmed |
| 14 | Innovative Asset Advisors Group, LLC | $112,213 | 4,035 | New |
| 15 | BURKETT FINANCIAL SERVICES, LLC | $95,110 | 3,420 | Trimmed |
| 16 | UBS Group AG | $28,088 | 1,010 | Added |
| 17 | HARBOUR INVESTMENTS, INC. | $26,114 | 939 | Trimmed |
| 18 | CREATIVE FINANCIAL DESIGNS INC /ADV | $8,371 | 301 | Hold |
| 19 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 20 | Sound Income Strategies, LLC | $0 | 0 | Exited |
| 21 | LeClair Wealth Partners LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30