Calamos S&P 500 Alt SeptCPSTETF
13F holders, Q4 2025 (December 31)19holders +2
4new positions
3sold out
$27.02avg. 13F price*
At the end of Q4 2025, 19 institutions reported holding Calamos S&P 500 Alt Sept (CPST) in their 13F filings, up 2 from Q3 2025. 4 opened new positions and 3 sold out. The largest holders were Calamos Advisors LLC ($7.7M), Calamos Wealth Management LLC ($3.4M) and Osaic Holdings, Inc. ($3.0M).
- Company
- Calamos S&P 500 Alt Sept
- CUSIP
- 12811T886
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $399K |
| Exits | 3 | $740K |
All 13F filers, Q3 2025 → Q4 2025: 159,830 shares bought and 39,305 shares sold, net +120,525 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 19 holders
| Calamos Advisors LLC | 0.05% | Add +11.9% | 286,753 | $7.7M |
| Calamos Wealth Management LLC | 0.12% | Reduce -8.0% | 125,519 | $3.4M |
| Osaic Holdings, Inc. | 0.00% | Add +1031.8% | 109,277 | $3.0M |
| Old Mission Capital LLC | 0.03% | Add +111.0% | 28,519 | $771K |
| Camelot Portfolios, LLC | 0.43% | Reduce -1.4% | 25,744 | $696K |
| Commonwealth Equity Services, LLC | 0.00% | No change | 20,483 | $554K |
| Blue Water Asset Management | 0.16% | — | 16,552 | $447K |
| Harbour Investments, Inc. | 0.01% | No change | 15,495 | $419K |
| Capital Analysts, LLC | 0.01% | No change | 13,745 | $372K |
| Grantvest Financial Group LLC | 0.21% | No change | 12,212 | $330K |
| City Center Advisors, LLC | 0.29% | New | 11,629 | $314K |
| Pallas Capital Advisors LLC | 0.01% | Reduce -2.9% | 9,242 | $250K |
| Hohimer Wealth Management, LLC | 0.03% | No change | 8,888 | $240K |
| Sterling Financial Planning, Inc. | 0.07% | No change | 8,018 | $217K |
| Burkett Financial Services, LLC | 0.07% | No change | 7,237 | $196K |
| Sound Income Strategies, LLC | 0.00% | New | 1,608 | $44K |
| Motiv8 Investments LLC | 0.02% | New | 1,349 | $36K |
| Creative Financial Designs Inc. | 0.00% | Add +0.7% | 301 | $8K |
| UBS Group AG | 0.00% | New | 189 | $5K |
"% 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.