Who Owns Calamos S&P 500 Structured Alt Protection ETF – October (CPSO)?Hedge Fund & Institutional Holders

$27.04-0.05 (-0.19%)Financial ServicesNYSE_ARCA

Institutional Holders

23

as of Q4 2025

Total Institutional Value

$7.756838701572473e+43T

% of Float Held

—

QoQ Change in Holders

+15 / -0

Price History

$24.96$25.54$26.11$26.69$27.26Oct 24Jun 25Mar 26

CPSO — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Calamos Advisors LLCNew Position+287K+$7.8M
Blue Water Asset ManagementNew Position+31K+$838K
Calamos Wealth Management LLCNew Position+26K+$701K
OLD MISSION CAPITAL LLCNew Position+17K+$473K
Grantvest Financial Group LLCNew Position+17K+$454K
TrustBankNew Position+15K+$408K
Rooted Wealth Advisors, Inc.New Position+12K+$339K
Security Financial Services, INC.New Position+10K+$274K
Spire Wealth ManagementNew Position+2K+$64K
TUCKER ASSET MANAGEMENT LLCNew Position+2K+$48K
Camelot Portfolios, LLCNew Position+2K+$43K
New England Capital Financial Advisors LLCNew Position+448+$12K
Cambridge Investment Research Advisors, Inc.New Position+12K+$0
OSAIC HOLDINGS, INC.New Position+2K+$0
COMMONWEALTH EQUITY SERVICES, LLCNew Position+26K+$0

CPSO — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
UBS Group AGDecreased-1K-$36.7M

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1Calamos Advisors LLC286,646$7.8M0.03%Share
2Blue Water Asset Management30,966$838K0.30%Share
3Calamos Wealth Management LLC25,915$701K0.02%Share
4HARBOUR INVESTMENTS, INC.21,128$572K0.01%Share
5OLD MISSION CAPITAL LLC17,494$473K0.01%Share
6TrustBank15,100$408K0.17%Share
7Rooted Wealth Advisors, Inc.12,486$339K0.10%Share
8Capital Analysts, LLC11,151$302K0.01%Share
9Sloy Dahl & Holst, LLC10,740$290K0.03%Share
10Grantvest Financial Group LLC10,175$275K0.18%Share
11Security Financial Services, INC.10,132$274K0.04%Share
12Grantvest Financial Group LLC6,620$179K0.11%Share
13Spire Wealth Management2,401$64K0.00%Share
14TUCKER ASSET MANAGEMENT LLC1,782$48K0.01%Share
15Camelot Portfolios, LLC1,615$43K0.03%Share
16CREATIVE FINANCIAL DESIGNS INC /ADV838$22K0.00%Share
17New England Capital Financial Advisors LLC448$12K0.00%Share
18UBS Group AG100$2K0.00%Share
19OSAIC HOLDINGS, INC.2,046$00.00%Share
20MORGAN STANLEY2,000$00.00%Share
21Cambridge Investment Research Advisors, Inc.11,989$00.00%Share
22SUSQUEHANNA INTERNATIONAL GROUP, LLP29,006$00.00%Share
23COMMONWEALTH EQUITY SERVICES, LLC25,756$00.00%Share

CPSO Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 202522$12.6M+15
Q3 20257$635.5M-3
Q2 202510$8.5B-1
Q1 202511$7.2B-2
Q4 202413$975.2B—

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As of Q4 2025, 23 institutional investors hold CPSO (Calamos S&P 500 Structured Alt Protection ETF – October). The largest holder is Calamos Advisors LLC with $7.8M in shares. This quarter, 15 institutions opened new positions and 0 closed their positions.

Frequently Asked Questions

How many hedge funds own CPSO?

As of Q4 2025, 23 institutional investors report holding CPSO (Calamos S&P 500 Structured Alt Protection ETF – October) in their 13F filings.

Who is the largest institutional holder of CPSO?

The largest institutional holder of CPSO is Calamos Advisors LLC with $7.8M in shares.

Is institutional ownership of CPSO increasing or decreasing?

This quarter, 15 institutions opened new positions in CPSO and 0 closed their positions.