Calamos S&P 500 Structured Alt Protection ETF October (CPSO) Institutional Ownership $25.19 -0.27 (-1.06%) Closing price 04:10 PM EasternExtended Trading$25.20 +0.01 (+0.02%) As of 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. 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)$17.77MNumber ofInstitutional Sellers(last 12 months)0 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? 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Email Address Skip Chart & View Institutional Buying and Selling Data CPSO Institutional Buying and Selling by Quarter Remove Ads 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 CompanyDetails3/17/2025Wealth 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)Remove Ads CPSO Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CPSO shares? During the previous two years, 10 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), Wealth Enhancement Advisory Services LLC ($2.60M), Centaurus Financial Inc. ($2.12M), Commonwealth Equity Services LLC ($842K), Capital Analysts LLC ($239K), and Sloy Dahl & Holst LLC ($239K).Learn more on CPSO's institutional investors. Which institutional investors have been buying Calamos S&P 500 Structured Alt Protection ETF October stock? Of the 10 institutional investors that purchased Calamos S&P 500 Structured Alt Protection ETF October 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), Sloy Dahl & Holst LLC ($9.40K), and Capital Analysts LLC ($9.37K). How much institutional buying is happening at Calamos S&P 500 Structured Alt Protection ETF October? Institutional investors have bought a total of 697,382 shares in the last 24 months. This purchase volume represents approximately $17.77M in transactions. 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