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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.

New
Increased
Maintained
Reduced
Closed

100% more first-time investments, than exits

New positions opened: 2 | Existing positions closed: 1

8% more funds holding

Funds holding: 13 → 14 (+1)

4% more capital invested

Capital invested by funds: $12.9M → $13.5M (+$578K)

0.38% more ownership

Funds ownership: 51.31% → 51.7% (+0.38%)

86% less repeat investments, than reductions

Existing positions increased: 1 | Existing positions reduced: 7

Holders
14
Holders Change
+1
Holders Change %
+7.69%
% of All Funds
0.18%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
2
Increased
1
Reduced
7
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Calamos Advisors
Calamos Advisors
Illinois
+$1.38M
2
OMC
Old Mission Capital
Illinois
+$465K
3
SFP
Sterling Financial Planning
New Jersey
+$204K

Top Sellers

Rank Fund Capital Flow
1
Osaic Holdings
Osaic Holdings
Arizona
-$652K
2
CWM
Calamos Wealth Management
Illinois
-$589K
3
FA
Flagstar Advisors
New York
-$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
Calamos Advisors
1
Calamos Advisors
Illinois
$6.75M +$1.38M +54,201 +27%
CWM
2
Calamos Wealth Management
Illinois
$3.34M -$589K -23,137 -15%
CP
3
Camelot Portfolios
Ohio
$684K -$3.08K -121 -0.5%
Commonwealth Equity Services
4
Commonwealth Equity Services
Massachusetts
$510K -$25.9K -1,017 -5%
OMC
5
Old Mission Capital
Illinois
$477K +$465K +18,274 New
CAL
6
Capital Analysts LLC
Pennsylvania
$382K – – –
Susquehanna International Group
7
Susquehanna International Group
Pennsylvania
$325K -$122K -4,775 -28%
Osaic Holdings
8
Osaic Holdings
Arizona
$252K -$652K -25,619 -73%
MOS
9
MGO One Seven
Ohio
$235K – – –
HWM
10
Hohimer Wealth Management
Washington
$232K -$25.7K -1,011 -10%
SFP
11
Sterling Financial Planning
New Jersey
$209K +$204K +8,018 New
BFS
12
Burkett Financial Services
South Carolina
$90.9K -$24.5K -964 -22%
CFD
13
Creative Financial Designs
Indiana
$7.81K – – –
UBS Group
14
UBS Group
Switzerland
$1.88K – – –
FA
15
Flagstar Advisors
New York
– -$504K -20,000 Closed

CPST Hedge Fund Activity: Q2 2025 in Review

14 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Calamos S&P 500 Structured Alt Protection ETF - September (CPST) for Q2 2025, worth a combined $13.5M — up 4.5% from $12.9M a quarter earlier.

Buyers outnumbered sellers: 2 funds opened new CPST positions and 1 closed out — a net gain of 1 holder — while 1 added to existing stakes and 7 trimmed.

The largest buyer was Calamos Advisors, adding an estimated $1.38M. The largest seller was Osaic Holdings, cutting an estimated $652K.

  • 14 institutional investors held Calamos S&P 500 Structured Alt Protection ETF - September (CPST) as of Q2 2025, up from 13 in Q1 2025.
  • Funds reported $13.5M of Calamos S&P 500 Structured Alt Protection ETF - September stock for Q2 2025, up 4.5% quarter-over-quarter.
  • 2 funds opened new Calamos S&P 500 Structured Alt Protection ETF - September positions in Q2 2025 and 1 closed out, a net change of +1 holder.
  • The largest Calamos S&P 500 Structured Alt Protection ETF - September buyer in Q2 2025 was Calamos Advisors, an estimated $1.38M added.
  • The largest Calamos S&P 500 Structured Alt Protection ETF - September seller in Q2 2025 was Osaic Holdings, an estimated $652K sold.

Based on aggregated 13F filings for Q2 2025.