NYSEARCA:CPSO Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) Price, Holdings, & News $27.59 +0.06 (+0.22%) Closing price 04:10 PM EasternExtended Trading$27.56 -0.03 (-0.11%) As of 04:15 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 Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisChartHoldingsOwnershipSEC FilingsBuy 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$27.55▼$27.6050-Day Range$26.86▼$27.5952-Week Range$25.47▼$27.60Volume1,869 shsAverage Volume1,867 shsMarket Capitalization$27.59 millionAssets Under Management$26.22 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%-0.61%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. Submit View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. 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 2.0% and is now trading at $27.59. Who are Calamos S&P 500 Structured Alt Protection ETF - October's major shareholders? Calamos S&P 500 Structured Alt Protection ETF - October's top institutional investors 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$26.22 million Average Daily Volume$0.00 Discount/Premium-0.07% 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 Elon Musk's Next MoveExplore Elon Musk’s boldest ventures yet—from AI and autonomy to space colonization—and find out how investors can ride the next wave of innovation.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 5/5/2026 by MarketBeat.com Staff. 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