Calamos S&P 500 Alt SeptCPSTETF
13F holders, Q2 2025 (June 30)14holders +1
2new positions
1sold out
$26.11avg. 13F price*
At the end of Q2 2025, 14 institutions reported holding Calamos S&P 500 Alt Sept (CPST) in their 13F filings, up 1 from Q1 2025. 2 opened new positions and 1 sold out. The largest holders were Calamos Advisors LLC ($6.7M), Calamos Wealth Management LLC ($3.3M) and Camelot Portfolios, LLC ($684K).
- Company
- Calamos S&P 500 Alt Sept
- CUSIP
- 12811T886
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $687K |
| Exits | 1 | $504K |
All 13F filers, Q1 2025 → Q2 2025: 80,493 shares bought and 76,644 shares sold, net +3,849 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 14 holders
| Calamos Advisors LLC | 0.04% | Add +26.5% | 258,426 | $6.7M |
| Calamos Wealth Management LLC | 0.14% | Reduce -15.3% | 128,057 | $3.3M |
| Camelot Portfolios, LLC | 0.41% | Reduce -0.5% | 26,200 | $684K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -5.0% | 19,543 | $510K |
| Old Mission Capital LLC | 0.01% | New | 18,274 | $477K |
| Capital Analysts, LLC | 0.01% | No change | 14,625 | $382K |
| Susquehanna International Group, LLP | 0.00% | Reduce -27.8% | 12,431 | $325K |
| Osaic Holdings, Inc. | 0.00% | Reduce -72.6% | 9,655 | $252K |
| Mgo One Seven LLC | 0.01% | No change | 9,000 | $235K |
| Hohimer Wealth Management, LLC | 0.04% | Reduce -10.2% | 8,888 | $232K |
| Sterling Financial Planning, Inc. | 0.07% | New | 8,018 | $209K |
| Burkett Financial Services, LLC | 0.03% | Reduce -21.7% | 3,481 | $91K |
| Creative Financial Designs Inc. | 0.00% | No change | 299 | $8K |
| UBS Group AG | 0.00% | No change | 72 | $2K |
"% of holder's portfolio" is CPST's weight in each manager's 13F, not the share of Calamos S&P 500 Alt Sept the manager owns.