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Calamos S&P 500 Structured Alt Protection ETF - March

21 hedge funds and large institutions have $18.1M invested in Calamos S&P 500 Structured Alt Protection ETF - March in 2026 Q1 according to their latest regulatory filings, with 7 funds opening new positions, 5 increasing their positions, 2 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

474% more capital inflows, than outflows

Capital inflows: $5.6M | Capital outflows: $976K

150% more repeat investments, than reductions

Existing positions increased: 5 | Existing positions reduced: 2

75% more first-time investments, than exits

New positions opened: 7 | Existing positions closed: 4

11% more funds holding

Funds holding: 19 → 21 (+2)

0.19% more ownership

Funds ownership: 59.51% → 59.7% (+0.19%)

Holders
21
Holders Change
+2
Holders Change %
+10.53%
% of All Funds
0.26%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
7
Increased
5
Reduced
2
Closed
4
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

CPSR Hedge Fund Activity: Q1 2026 in Review

21 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - March (CPSR) for Q1 2026, worth a combined $18.1M — up 34% from $13.5M a quarter earlier.

Buyers outnumbered sellers: 7 funds opened new CPSR positions and 4 closed out — a net gain of 3 holders — while 5 added to existing stakes and 2 trimmed.

The largest buyer was Calamos Advisors, adding an estimated $3.06M. The largest seller was Old Mission Capital, exiting entirely with an estimated $524K sold.

  • 21 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - March (CPSR) as of Q1 2026, up from 19 in Q4 2025.
  • Funds reported $18.1M of Calamos S&P 500 Structured Alt Protection ETF - March stock for Q1 2026, up 34% quarter-over-quarter.
  • 7 funds opened new Calamos S&P 500 Structured Alt Protection ETF - March positions in Q1 2026 and 4 closed out, a net change of +3 holders.
  • The largest Calamos S&P 500 Structured Alt Protection ETF - March buyer in Q1 2026 was Calamos Advisors, an estimated $3.06M added.
  • The largest Calamos S&P 500 Structured Alt Protection ETF - March seller in Q1 2026 was Old Mission Capital, an estimated $524K sold.

Based on aggregated 13F filings for Q1 2026.