Calamos S&P 500 STR Alt AprCPSPETF

13F holders, Q4 2025 (December 31)
13holders +2
2new positions
1sold out
$26.07avg. 13F price*

At the end of Q4 2025, 13 institutions reported holding Calamos S&P 500 STR Alt Apr (CPSP) in their 13F filings, up 2 from Q3 2025. 2 opened new positions and 1 sold out. The largest holders were Calamos Advisors LLC ($7.8M), Calamos Wealth Management LLC ($1.3M) and Commonwealth Equity Services, LLC ($438K).

Company
Calamos S&P 500 STR Alt Apr
CUSIP
12811T753
Latest filing quarter
Q2 2026

History

Number of 13F holders

051015 Q2 2025: 9Q2 2025Q3 2025: 11Q3 2025Q4 2025: 13Q4 2025Q1 2026: 9Q1 2026Q2 2026: 11Q2 2026

Total Exit/New Position Q3 2025 → Q4 2025

InstitutionsTotal Value
New Positions2$99K
Exits1$325K

All 13F filers, Q3 2025 → Q4 2025: 38,628 shares bought and 37,658 shares sold, net +970 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 13 holders

Calamos Advisors LLC 0.05% Add +13.2% 297,904 $7.8M
Calamos Wealth Management LLC 0.05% Reduce -2.3% 51,308 $1.3M
Commonwealth Equity Services, LLC 0.00% Reduce -1.7% 16,791 $438K
Old Mission Capital LLC 0.01% Reduce -61.4% 13,843 $361K
Jim Saulnier & Associates, LLC 0.17% No change 12,746 $332K
Advisory Services Network, LLC 0.00% No change 10,612 $277K
TrustBank 0.11% — 10,552 $275K
Centaurus Financial, Inc. 0.01% No change 7,840 $204K
Kestra Advisory Services, LLC 0.00% New 2,400 $63K
Motiv8 Investments LLC 0.02% New 1,397 $36K
Capital Analysts, LLC 0.00% No change 1,229 $32K
New England Capital Financial Advisors LLC 0.01% Reduce -1.4% 585 $15K
UBS Group AG 0.00% Reduce -74.7% 505 $13K

"% of holder's portfolio" is CPSP's weight in each manager's 13F, not the share of Calamos S&P 500 STR Alt Apr the manager owns.