Calamos S&P 500 Structured Alt Protection ETF - May
CPSM
26 hedge funds and large institutions have $27.4M invested in Calamos S&P 500 Structured Alt Protection ETF - May in 2026 Q1 according to their latest regulatory filings, with 3 funds opening new positions, 2 increasing their positions, 10 reducing their positions, and 4 closing their positions.
2.92% more ownership
Funds ownership: 47.07% → 49.99% (+2.9%)
2% more capital invested
Capital invested by funds: $26.9M → $27.4M (+$460K)
7% less funds holding
Funds holding: 28 → 26 (-2)
25% less first-time investments, than exits
New positions opened: 3 | Existing positions closed: 4
80% less repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 10
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Calamos Advisors
Naperville,
Illinois
|
+$1.61M |
| 2 |
Cambridge Investment Research Advisors
Fairfield,
Iowa
|
+$1.35M |
| 3 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$479K |
| 4 |
LWP
LeClair Wealth Partners
Dublin,
Ohio
|
+$459K |
| 5 |
LPL Financial
San Diego,
California
|
+$455K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Commonwealth Equity Services
Waltham,
Massachusetts
|
-$1.46M |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$597K |
| 3 |
AWA
Amplius Wealth Advisors
Blue Bell,
Pennsylvania
|
-$528K |
| 4 |
CAGAS
Capital Advisory Group Advisory Services
Bloomington,
Minnesota
|
-$499K |
| 5 |
Osaic Holdings
Scottsdale,
Arizona
|
-$209K |
CPSM Hedge Fund Activity: Q1 2026 in Review
26 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) for Q1 2026, worth a combined $27.4M — up 1.7% from $26.9M a quarter earlier.
Sellers outnumbered buyers: 4 funds closed out of CPSM and 3 opened new positions — a net loss of 1 holder — while 10 trimmed existing stakes and 2 added.
The largest buyer was Calamos Advisors, adding an estimated $1.61M. The largest seller was Commonwealth Equity Services, cutting an estimated $1.46M.
- 26 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) as of Q1 2026, down from 28 in Q4 2025.
- Funds reported $27.4M of Calamos S&P 500 Structured Alt Protection ETF - May stock for Q1 2026, up 1.7% quarter-over-quarter.
- 3 funds opened new Calamos S&P 500 Structured Alt Protection ETF - May positions in Q1 2026 and 4 closed out, a net change of -1 holder.
- The largest Calamos S&P 500 Structured Alt Protection ETF - May buyer in Q1 2026 was Calamos Advisors, an estimated $1.61M added.
- The largest Calamos S&P 500 Structured Alt Protection ETF - May seller in Q1 2026 was Commonwealth Equity Services, an estimated $1.46M sold.
Based on aggregated 13F filings for Q1 2026.