Calamos S&P 500 Alt Prot OctCPSOETF
13F holders, Q1 2025 (March 31)11holders −2
2new positions
4sold out
$25.37avg. 13F price*
At the end of Q1 2025, 11 institutions reported holding Calamos S&P 500 Alt Prot Oct (CPSO) in their 13F filings, down 2 from Q4 2024. 2 opened new positions and 4 sold out. The largest holders were Calamos Advisors LLC ($5.1M), Centaurus Financial, Inc. ($2.1M) and Calamos Wealth Management LLC ($959K).
- Company
- Calamos S&P 500 Alt Prot Oct
- CUSIP
- 12811T829
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $457K |
| Exits | 4 | $14.0M |
All 13F filers, Q4 2024 → Q1 2025: 22,122 shares bought and 609,447 shares sold, net −587,325 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 11 holders
| Calamos Advisors LLC | 0.04% | Reduce -21.3% | 202,948 | $5.1M |
| Centaurus Financial, Inc. | 0.13% | No change | 83,166 | $2.1M |
| Calamos Wealth Management LLC | 0.05% | No change | 37,801 | $959K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -12.6% | 28,910 | $734K |
| Susquehanna International Group, LLP | 0.00% | New | 16,793 | $426K |
| Capital Analysts, LLC | 0.01% | Add +19.0% | 11,151 | $283K |
| Sloy Dahl & Holst, LLC | 0.05% | Add +14.3% | 10,740 | $273K |
| Cetera Investment Advisers | 0.00% | No change | 8,486 | $215K |
| Harbour Investments, Inc. | 0.00% | Add +27.7% | 4,515 | $114K |
| UBS Group AG | 0.00% | New | 1,231 | $31K |
| Creative Financial Designs Inc. | 0.00% | No change | 539 | $14K |
"% of holder's portfolio" is CPSO's weight in each manager's 13F, not the share of Calamos S&P 500 Alt Prot Oct the manager owns.