Calamos S&P 500 Structured Alt Protection ETF - October
CPSO
20 hedge funds and large institutions have $16.4M invested in Calamos S&P 500 Structured Alt Protection ETF - October in 2026 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 3 increasing their positions, 8 reducing their positions, and 3 closing their positions.
13% more capital invested
Capital invested by funds: $14.6M → $16.4M (+$1.83M)
6.87% more ownership
Funds ownership: 53.79% → 60.66% (+6.9%)
13% less funds holding
Funds holding: 23 → 20 (-3)
33% less first-time investments, than exits
New positions opened: 2 | Existing positions closed: 3
63% less repeat investments, than reductions
Existing positions increased: 3 | Existing positions reduced: 8
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Calamos Advisors
Naperville,
Illinois
|
+$1.88M |
| 2 |
LWP
LeClair Wealth Partners
Dublin,
Ohio
|
+$836K |
| 3 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$38.6K |
| 4 |
ASN
Advisory Services Network
Atlanta,
Georgia
|
+$32.3K |
| 5 |
CFD
Creative Financial Designs
Kokomo,
Indiana
|
+$896 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T
TrustBank
Olney,
Illinois
|
-$409K |
| 2 |
HI
Harbour Investments
Madison,
Wisconsin
|
-$184K |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$64.4K |
| 4 |
GFG
Grantvest Financial Group
Matawan,
New Jersey
|
-$57.4K |
| 5 |
Commonwealth Equity Services
Waltham,
Massachusetts
|
-$46K |
CPSO Hedge Fund Activity: Q1 2026 in Review
20 of the 8,182 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) for Q1 2026, worth a combined $16.4M — up 13% from $14.6M a quarter earlier.
Sellers outnumbered buyers: 3 funds closed out of CPSO and 2 opened new positions — a net loss of 1 holder — while 8 trimmed existing stakes and 3 added.
The largest buyer was Calamos Advisors, adding an estimated $1.88M. The largest seller was TrustBank, exiting entirely with an estimated $409K sold.
- 20 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) as of Q1 2026, down from 23 in Q4 2025.
- Funds reported $16.4M of Calamos S&P 500 Structured Alt Protection ETF - October stock for Q1 2026, up 13% quarter-over-quarter.
- 2 funds opened new Calamos S&P 500 Structured Alt Protection ETF - October positions in Q1 2026 and 3 closed out, a net change of -1 holder.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October buyer in Q1 2026 was Calamos Advisors, an estimated $1.88M added.
- The largest Calamos S&P 500 Structured Alt Protection ETF - October seller in Q1 2026 was TrustBank, an estimated $409K sold.
Based on aggregated 13F filings for Q1 2026.