Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) Institutional Ownership $26.29 +0.05 (+0.19%) As of 07/3/2025 05:00 PM Eastern Add Compare Share Share Ownership Stock AnalysisChartHoldingsOwnershipBuy This Stock Institutional Ownership Changes (13F Filings) for Calamos S&P 500 Structured Alt Protection ETF - October (NYSEARCA:CPSO)Number ofInstitutional Buyers(last 12 months)10TotalInstitutional Inflows(last 12 months)$17.87MNumber ofInstitutional Sellers(last 12 months)1TotalInstitutional Outflows(last 12 months)$1.39M Get CPSO Insider Trade Alerts Want to know when executives and insiders are buying or selling Calamos S&P 500 Structured Alt Protection ETF - October stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data CPSO Institutional Buying and Selling by Quarter Calamos S&P 500 Structured Alt Protection ETF - October Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/14/2025Capital Analysts LLC11,151$283K0.0%+19.0%1.784% 5/12/2025Sloy Dahl & Holst LLC10,740$273K0.0%+14.3%1.481% 5/8/2025Harbour Investments Inc.4,515$114K0.0%+27.7%0.623% 4/29/2025Calamos Advisors LLC202,948$5.15M0.0%-21.3%27.993% 3/17/2025Wealth Enhancement Advisory Services LLC102,197$2.60M0.0%N/A14.096% 3/12/2025Centaurus Financial Inc.83,166$2.12M0.1%N/A10.396% 2/17/2025Cetera Investment Advisers8,486$216K0.0%N/A0.000% 2/14/2025Capital Analysts LLC9,373$239K0.0%N/A0.000% 2/13/2025Envestnet Asset Management Inc.221,348$5.64M0.0%N/A0.000% 2/12/2025Tucker Asset Management LLC1,782$45K0.0%N/A0.000% 2/10/2025Harbour Investments Inc.3,535$90K0.0%N/A0.000% 2/10/2025Commonwealth Equity Services LLC33,068$842K0.0%N/A0.000% 2/10/2025VanWeelden Wealth Management LLC225,027$5.73M5.2%N/A0.000% 1/27/2025Sloy Dahl & Holst LLC9,400$239K0.0%N/A0.000% (Data available from 1/1/2016 forward) CPSO Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CPSO shares? During the previous two years, 11 institutional investors and hedge funds held shares of Calamos S&P 500 Structured Alt Protection ETF - October. The most heavily invested institutionals were VanWeelden Wealth Management LLC ($5.73M), Envestnet Asset Management Inc. ($5.64M), Calamos Advisors LLC ($5.15M), Wealth Enhancement Advisory Services LLC ($2.60M), Centaurus Financial Inc. ($2.12M), Commonwealth Equity Services LLC ($842K), and Capital Analysts LLC ($283K).Learn more on Calamos S&P 500 Structured Alt Protection ETF - October's institutional investors. Which institutional investors have been buying Calamos S&P 500 Structured Alt Protection ETF - October's stock? Of the 10 institutional investors that purchased Calamos S&P 500 Structured Alt Protection ETF - October's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: VanWeelden Wealth Management LLC ($225.03K), Envestnet Asset Management Inc. ($221.35K), Wealth Enhancement Advisory Services LLC ($102.20K), Centaurus Financial Inc. ($83.17K), Commonwealth Equity Services LLC ($33.07K), Capital Analysts LLC ($11.15K), and Sloy Dahl & Holst LLC ($10.74K). How much institutional buying is happening at Calamos S&P 500 Structured Alt Protection ETF - October? Institutional investors have bought a total of 701,480 shares in the last 24 months. This purchase volume represents approximately $17.87M in transactions. Which of Calamos S&P 500 Structured Alt Protection ETF - October's major shareholders have been selling company stock? The following institutional investors have sold Calamos S&P 500 Structured Alt Protection ETF - October stock in the last 24 months: Calamos Advisors LLC ($54.94K). How much institutional selling is happening at Calamos S&P 500 Structured Alt Protection ETF - October? Institutional investors have sold a total of 54,935 shares in the last 24 months. This volume of shares sold represents approximately $1.39M in transactions. Related Companies SEPT Institutional Ownership MAYT Institutional Ownership KSPY Institutional Ownership SZNE Institutional Ownership QRMI Institutional Ownership GNOV Institutional Ownership BCIL Institutional Ownership DFVE Institutional Ownership CPNQ Institutional Ownership RSDE Institutional Ownership This page (NYSEARCA:CPSO) was last updated on 7/5/2025 by MarketBeat.com Staff From Our PartnersTrump’s New Order Could Boost Social Security Benefits by 400%If you collect—or plan to collect—Social Security, you need to see this. A new initiative tied to President...InvestorPlace | SponsoredTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredPost-Halving = Profit Season (Here’s How to Win It)It happens like clockwork. 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