Calamos S&P 500 Alt SeptCPSTETF
13F holders, Q1 2025 (March 31)13holders −3
3new positions
6sold out
$25.18avg. 13F price*
At the end of Q1 2025, 13 institutions reported holding Calamos S&P 500 Alt Sept (CPST) in their 13F filings, down 3 from Q4 2024. 3 opened new positions and 6 sold out. The largest holders were Calamos Advisors LLC ($5.1M), Calamos Wealth Management LLC ($3.8M) and Osaic Holdings, Inc. ($888K).
- Company
- Calamos S&P 500 Alt Sept
- CUSIP
- 12811T886
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $1.1M |
| Exits | 6 | $1.6M |
All 13F filers, Q4 2024 → Q1 2025: 43,599 shares bought and 118,497 shares sold, net −74,898 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 13 holders
| Calamos Advisors LLC | 0.04% | Reduce -21.3% | 204,225 | $5.1M |
| Calamos Wealth Management LLC | 0.19% | No change | 151,194 | $3.8M |
| Osaic Holdings, Inc. | 0.00% | No change | 35,274 | $888K |
| Camelot Portfolios, LLC | 0.41% | New | 26,321 | $663K |
| Commonwealth Equity Services, LLC | 0.00% | No change | 20,560 | $518K |
| Flagstar Securities, Inc. | 0.13% | No change | 20,000 | $504K |
| Susquehanna International Group, LLP | 0.00% | New | 17,206 | $433K |
| Capital Analysts, LLC | 0.01% | No change | 14,625 | $368K |
| Hohimer Wealth Management, LLC | 0.05% | No change | 9,899 | $249K |
| Mgo One Seven LLC | 0.01% | No change | 9,000 | $227K |
| Burkett Financial Services, LLC | 0.05% | Reduce -21.1% | 4,445 | $112K |
| Creative Financial Designs Inc. | 0.00% | No change | 299 | $8K |
| UBS Group AG | 0.00% | New | 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.