Calamos S&P 500 Alt Prot OctCPSOETF
13F holders, Q3 2025 (September 30)11holders
1new positions
1sold out
$26.80avg. 13F price*
At the end of Q3 2025, 11 institutions reported holding Calamos S&P 500 Alt Prot Oct (CPSO) in their 13F filings, unchanged from Q2 2025. 1 opened new positions and 1 sold out. The largest holders were Calamos Advisors LLC ($6.8M), Commonwealth Equity Services, LLC ($761K) and Calamos Wealth Management LLC ($418K).
- Company
- Calamos S&P 500 Alt Prot Oct
- CUSIP
- 12811T829
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $335K |
| Exits | 1 | $407K |
All 13F filers, Q2 2025 → Q3 2025: 12,486 shares bought and 31,293 shares sold, net −18,807 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 11 holders
| Calamos Advisors LLC | 0.04% | Reduce -0.8% | 254,883 | $6.8M |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -1.7% | 28,415 | $761K |
| Calamos Wealth Management LLC | 0.02% | Reduce -16.2% | 15,601 | $418K |
| Rooted Wealth Advisors, Inc. | 0.10% | New | 12,486 | $335K |
| Capital Analysts, LLC | 0.01% | No change | 11,151 | $299K |
| Sloy Dahl & Holst, LLC | 0.03% | No change | 10,740 | $288K |
| Susquehanna International Group, LLP | 0.00% | Reduce -54.9% | 7,514 | $201K |
| Morgan Stanley | 0.00% | No change | 2,000 | $54K |
| Harbour Investments, Inc. | 0.00% | Reduce -38.3% | 1,577 | $42K |
| UBS Group AG | 0.00% | Reduce -5.6% | 1,371 | $37K |
| Creative Financial Designs Inc. | 0.00% | No change | 503 | $13K |
"% 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.