Calamos S&P 500 Structured Alt Protection ETF - October
CPSO
11 hedge funds and large institutions have $9.57M invested in Calamos S&P 500 Structured Alt Protection ETF - October in 2025 Q2 according to their latest regulatory filings, with 2 funds opening new positions, 2 increasing their positions, 4 reducing their positions, and 2 closing their positions.
0% more funds holding
Funds holding: 11 → 11 (0)
0% more first-time investments, than exits
New positions opened: 2 | Existing positions closed: 2
3.51% less ownership
Funds ownership: 55.65% → 52.15% (-3.5%)
7% less capital invested
Capital invested by funds: $10.3M → $9.57M (-$734K)
50% less repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 4
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Calamos Advisors
Naperville,
Illinois
|
+$1.39M |
| 2 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$398K |
| 3 |
Morgan Stanley
New York
|
+$51.3K |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$5.67K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CF
Centaurus Financial
Anaheim,
California
|
-$2.11M |
| 2 |
CWM
Calamos Wealth Management
Naperville,
Illinois
|
-$492K |
| 3 |
Cetera Investment Advisers
Schaumburg,
Illinois
|
-$215K |
| 4 |
HI
Harbour Investments
Madison,
Wisconsin
|
-$50.2K |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$3.9K |
CPSO Hedge Fund Activity: Q2 2025 in Review
11 of the 7,610 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) for Q2 2025, worth a combined $9.57M — down 7.1% from $10.3M a quarter earlier.
Fund positioning in CPSO was balanced in Q2 2025: 2 funds opened new positions, 2 closed out, 2 added to existing stakes and 4 trimmed.
The largest buyer was Calamos Advisors, adding an estimated $1.39M. The largest seller was Centaurus Financial, exiting entirely with an estimated $2.11M sold.
- 11 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) as of Q2 2025, unchanged from Q1 2025.
- Funds reported $9.57M of Calamos S&P 500 Structured Alt Protection ETF - October stock for Q2 2025, down 7.1% quarter-over-quarter.
- 2 funds opened new Calamos S&P 500 Structured Alt Protection ETF - October positions in Q2 2025 and 2 closed out, a net change of 0 holders.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October buyer in Q2 2025 was Calamos Advisors, an estimated $1.39M added.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October seller in Q2 2025 was Centaurus Financial, an estimated $2.11M sold.
Based on aggregated 13F filings for Q2 2025.