NYSEARCA:CPSO Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) Price, Holdings, & News $27.72 0.00 (0.00%) As of 05/22/2026 04:10 PM Eastern Add Compare Share Share Stock Analysis Stock AnalysisChartHoldingsOwnershipSEC FilingsShort InterestBuy This Stock About Calamos S&P 500 Structured Alt Protection ETF - October (NYSEARCA:CPSO) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get CPSO alerts:Sign Up Key Stats Today's Range$27.72▼$27.7450-Day Range$26.86▼$27.7252-Week Range$25.72▼$27.74Volume6,323 shsAverage Volume1,736 shsMarket Capitalization$27.72 millionAssets Under Management$26.38 millionDividend YieldN/ANet Expense Ratio0.69%Aggregate RatingN/A ETF Overview The Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) is an exchange-traded fund that mostly invests in large cap equity. The fund seeks to track the return of the SPDR S&P 500 ETF Trust (SPY), to a cap, with 100% downside hedge over a one-year outcome period. The actively managed fund holds FLEX options to obtain exposure CPSO was launched on Oct 1, 2024 and is issued by Calamos. Read More Calamos S&P 500 Structured Alt Protection ETF - October ExpensesTypeCPSOLarge Cap ETFsEquity ETFsNYSEARCA ETFsAll ETFsManagement Fee0.69%0.58%0.57%0.51%0.53%Other Expenses0.00%0.27%0.55%0.58%0.55%Total Expense0.69%0.65%0.76%0.74%0.73%Fee Waiver0.00%-0.23%-0.64%-0.70%-0.62%Net Expense0.69%0.62%0.63%0.58%0.60% Receive CPSO Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Calamos S&P 500 Structured Alt Protection ETF - October and its competitors with MarketBeat's FREE daily newsletter. 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CPSO ETF News HeadlinesNo headlines for this company have been tracked by MarketBeat.com CPSO ETF - Frequently Asked Questions How have CPSO shares performed this year? Calamos S&P 500 Structured Alt Protection ETF - October's stock was trading at $27.06 on January 1st, 2026. Since then, CPSO shares have increased by 2.4% and is now trading at $27.72. Who are Calamos S&P 500 Structured Alt Protection ETF - October's major shareholders? Top institutional shareholders of Calamos S&P 500 Structured Alt Protection ETF - October include Calamos Advisors LLC (35.60%) and Calamos Wealth Management LLC (2.55%). How do I buy shares of Calamos S&P 500 Structured Alt Protection ETF - October? Shares of CPSO stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. Fund Details IssuerCalamos Advisors Fund NameCalamos S&P 500 Structured Alt Protection ETF - October Tax ClassificationRegulated Investment Company Stock ExchangeNYSEARCACurrent SymbolNYSEARCA:CPSO Inception Date10/1/2024 Fund ManagerEli Pars, Jason Hill, David O'Donohue, Jimmy Young, Anthony Vecchiolla WebN/A PhoneN/AFund Focus Asset ClassEquity BenchmarkN/A CategorySize and Style FocusLarge Cap Development LevelDeveloped Markets RegionNorth America Number of Holdings5 Fund Statistics Assets Under Management$26.38 million Average Daily Volume$0.00 Discount/Premium-0.05% Administrator, Advisor and Custodian AdministratorState Street Bank and Trust Company AdvisorCalamos Advisors, LLC CustodianState Street Bank and Trust Company DistributorCalamos Financial Services LLC Transfer AgentState Street Bank and Trust Company TrusteeN/A Lead Market MakerWolverine Trading Miscellaneous Outstanding Shares1,000,000Beta0.19 Creation Unit25,000 Creation Fee$250.00 5G Stocks: The Path Forward is ProfitableClick the link to see MarketBeat's guide to investing in 5G and which 5G stocks show the most promise. Get This Free Report Top 4 CPSO Holdings4spy 260930 C 4.60 4spy 260930 C 4.60Holding Weight: 100.32%4spy 260930 P 666.18 4spy 260930 P 666.18Holding Weight: 4.57%UsdHolding Weight: 0.72%4spy 260930 C 708.82 4spy 260930 C 708.82Holding Weight: -5.61%Full Holdings DetailsCPSO Geographic ExposureCPSO Currency Exposure This page (NYSEARCA:CPSO) was last updated on 5/26/2026 by MarketBeat.com Staff. From Our PartnersHey, it's Jon Najarian. The SpaceX IPO is right around the corner. But I discovered Elon may have something BIGGER planned. Check this out before June 9th...After being invited to the SpaceX launch headquarters in Cape Canaveral from one of Elon's top lobbyists… Hall...Banyan Hill Publishing | SponsoredThe SpaceX supplier that shipped 5 billion chips to StarlinkWhen Nvidia surged 770%, its data center cooling supplier Vertiv climbed 1,700%. 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