Calamos S&P 500 Structured Alt Protection ETF - October
CPSO
21 hedge funds and large institutions have $16.1M invested in Calamos S&P 500 Structured Alt Protection ETF - October in 2026 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 1 increasing their positions, 7 reducing their positions, and 2 closing their positions.
50% more first-time investments, than exits
New positions opened: 3 | Existing positions closed: 2
5% more funds holding
Funds holding: 20 → 21 (+1)
2% less capital invested
Capital invested by funds: $16.4M → $16.1M (-$293K)
2.86% less ownership
Funds ownership: 60.66% → 57.8% (-2.9%)
86% less repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 7
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$841K |
| 2 |
APFP
Action Point Financial Planning
Grand Rapids,
Michigan
|
+$305K |
| 3 |
TAM
Tucker Asset Management
Littleton,
Colorado
|
+$49.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LWP
LeClair Wealth Partners
Dublin,
Ohio
|
-$832K |
| 2 |
Calamos Advisors
Naperville,
Illinois
|
-$320K |
| 3 |
BWAM
Blue Water Asset Management
Grand Rapids,
Michigan
|
-$285K |
| 4 |
OMC
Old Mission Capital
Chicago,
Illinois
|
-$206K |
| 5 |
CWM
Calamos Wealth Management
Naperville,
Illinois
|
-$154K |
CPSO Hedge Fund Activity: Q2 2026 in Review
21 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) for Q2 2026, worth a combined $16.1M — down 1.8% from $16.4M a quarter earlier.
Buyers outnumbered sellers: 3 funds opened new CPSO positions and 2 closed out — a net gain of 1 holder — while 1 added to existing stakes and 7 trimmed.
The largest buyer was Susquehanna International Group, adding an estimated $841K. The largest seller was LeClair Wealth Partners, exiting entirely with an estimated $832K sold.
- 21 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) as of Q2 2026, up from 20 in Q1 2026.
- Funds reported $16.1M of Calamos S&P 500 Structured Alt Protection ETF - October stock for Q2 2026, down 1.8% quarter-over-quarter.
- 3 funds opened new Calamos S&P 500 Structured Alt Protection ETF - October positions in Q2 2026 and 2 closed out, a net change of +1 holder.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October buyer in Q2 2026 was Susquehanna International Group, an estimated $841K added.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October seller in Q2 2026 was LeClair Wealth Partners, an estimated $832K sold.
Based on aggregated 13F filings for Q2 2026.