CPSO

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.

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New
Increased
Maintained
Reduced
Closed

more funds holding

Funds holding: →

more first-time investments, than exits

New positions opened: | Existing positions closed:

less ownership

Funds ownership: →

less capital invested

Capital invested by funds: $ → $

50% less repeat investments, than reductions

Existing positions increased: 2 | Existing positions reduced: 4

Holders
11
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
–
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
–
Puts
–
Net Calls
Net Calls Change

Top Buyers

1
+$1.39M
2
+$398K
3
+$51.3K
4
UBS Group
UBS Group
Switzerland
+$5.67K

Top Sellers

1
-$2.11M
2
-$492K
3
-$215K
4
HI
Harbour Investments
Wisconsin
-$50.2K
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$3.9K
Name Holding Trade Value Shares
Change 		Change in
Stake
1
$6.74M
2
$758K
3
$488K
4
$437K
5
$407K
6
$292K
7
$282K
8
$67K
9
$52.5K
10
$38.1K
11
$13.2K
12
–
13
–