CPST

Calamos S&P 500 Structured Alt Protection ETF - September
CPST

14 hedge funds and large institutions have $13.5M invested in Calamos S&P 500 Structured Alt Protection ETF - September in 2025 Q2 according to their latest regulatory filings, with 2 funds opening new positions, 1 increasing their positions, 7 reducing their positions, and 1 closing their positions.

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New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding: →

more capital invested

Capital invested by funds: $ → $

more ownership

Funds ownership: →

86% less repeat investments, than reductions

Existing positions increased: 1 | Existing positions reduced: 7

Holders
14
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
+$1.38M
2
+$465K
3
+$204K

Top Sellers

1
-$652K
2
-$589K
3
-$504K
4
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$122K
5
Commonwealth Equity Services
Commonwealth Equity Services
Massachusetts
-$25.9K
Name Holding Trade Value Shares
Change 		Change in
Stake
1
$6.75M
2
$3.34M
3
$684K
4
$510K
5
$477K
6
$382K
7
$325K
8
$252K
9
$235K
10
$232K
11
$209K
12
$90.9K
13
$7.81K
14
$1.88K
15
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