NYSEARCA:CPST Calamos S&P 500 Structured Alt Protection ETF - September (CPST) Price, Holdings, & News $26.18 -0.01 (-0.04%) As of 07/11/2025 04:10 PM Eastern Add Compare Share Share Stock Analysis Stock AnalysisChartHoldingsOwnershipBuy This Stock About Calamos S&P 500 Structured Alt Protection ETF - September (NYSEARCA:CPST) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get CPST alerts:Sign Up Key Stats Today's Range$26.17▼$26.1950-Day Range$25.26▼$26.1952-Week Range$24.63▼$26.20Volume1,444 shsAverage Volume7,182 shsMarket Capitalization$26.18 millionAssets Under Management$26.20 millionDividend YieldN/ANet Expense Ratio0.69%Aggregate RatingN/A ETF Overview The Calamos S&P 500 Structured Alt Protection ETF - September (CPST) is an exchange-traded fund that mostly invests in large cap equity. Calamos S&P 500 Structured Alt Protection ETFTM September (the Fund) seeks to provide investment results that, before taking fees and expenses into account, match the positive price return of the SPDR S&P 500 ETF Trust (Underlying ETF) up to a cap of 7.50% (the Cap). CPST was launched on Sep 3, 2024 and is issued by Calamos. Read More Calamos S&P 500 Structured Alt Protection ETF - September ExpensesTypeCPSTLarge Cap ETFsEquity ETFsNYSEARCA ETFsAll ETFsManagement Fee0.69%0.58%0.56%0.51%0.53%Other Expenses0.00%0.27%0.56%0.59%0.56%Total Expense0.69%0.65%0.76%0.74%0.73%Fee Waiver0.00%-0.23%-0.66%-0.71%-0.63%Net Expense0.69%0.62%0.63%0.58%0.60% Receive CPST Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Calamos S&P 500 Structured Alt Protection ETF - September and its competitors with MarketBeat's FREE daily newsletter. Email Address CPST ETF News HeadlinesNo headlines for this company have been tracked by MarketBeat.com CPST ETF - Frequently Asked Questions How have CPST shares performed this year? Calamos S&P 500 Structured Alt Protection ETF - September's stock was trading at $25.32 at the start of the year. Since then, CPST stock has increased by 3.4% and is now trading at $26.18. Who are Calamos S&P 500 Structured Alt Protection ETF - September's major shareholders? Calamos S&P 500 Structured Alt Protection ETF - September's top institutional shareholders include Burkett Financial Services LLC (0.35%). How do I buy shares of Calamos S&P 500 Structured Alt Protection ETF - September? Shares of CPST 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 - September Tax ClassificationRegulated Investment Company Stock ExchangeNYSEARCACurrent SymbolNYSEARCA:CPST Inception Date8/29/2024 Fund ManagerEli Pars, Jason Hill, David O'Donohue, Jimmy Young, Anthony Vecchiolla WebN/A PhoneN/AFund Focus Asset ClassEquity BenchmarkSPDR S&P 500 ETF Trust CategorySize and Style FocusLarge Cap Development LevelDeveloped Markets RegionNorth America Number of Holdings5 Fund Statistics Assets Under Management$26.20 million Average Daily Volume$0.00 Discount/Premium-0.01% 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 Shares1,000,000BetaN/A Creation Unit25,000 Creation Fee$250.00 10 Stocks Set to Soar in Summer 2025Enter your email address and we'll send you MarketBeat's list of ten stocks that are set to soar in Summer 2025, despite the threat of tariffs and other economic uncertainty. These ten stocks are incredibly resilient and are likely to thrive in any economic environment.Get This Free Report Top 4 CPST Holdings4Spy 250829 C 0.79 4Spy 250829 C 0.79Holding Weight: 96.13%4Spy 250829 P 563.68 4Spy 250829 P 563.68Holding Weight: 4.81%UsdHolding Weight: 0.20%4Spy 250829 C 606.01 4Spy 250829 C 606.01Holding Weight: -1.14%Full Holdings DetailsCPST Geographic ExposureCPST Currency Exposure This page (NYSEARCA:CPST) was last updated on 7/13/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredPresidential Bombshell: $150T Resource to Be Released as soon as this Summer?Something extraordinary is happening in Washington. 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