Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) Chart & Stock Price History $26.42 -0.01 (-0.04%) As of 04:10 PM Eastern Add Compare Share Share Chart Stock AnalysisChartHoldingsOwnershipBuy This Stock Calamos S&P 500 Structured Alt Protection ETF - October Stock Price Performance The Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) fund chart highlights key performance trends across multiple timeframes. Since the beginning of the year, the fund increased 3.69%. In the past month, the fund has increased 0.49%, reflecting recent market activity. As of the latest close, Calamos S&P 500 Structured Alt Protection ETF - October traded at $26.43 with a market cap of $17.84 million and volume of 1,973 shares. Receive CPSO Stock News and Ratings via EmailSign-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. Email Address 5 Day Performance0.00%1 Month Performance+0.49%3 Month Performance+3.61%Year-To-Date Performance+3.69% CPSO Stock Chart for Tuesday, August, 5, 2025 CPSO Chart by TradingView Calamos S&P 500 Structured Alt Protection ETF - October Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/05/2025$26.43$26.42-0.04%$26.42$26.421,720 shs$17.83 million08/04/2025$26.35$26.43+0.30%$26.44$26.441,973 shs$17.84 million08/01/2025$26.42$26.35-0.26%$26.36$26.361,993 shs$17.79 million07/31/2025$26.44$26.42-0.08%$26.44$26.405,323 shs$17.83 million07/30/2025$26.44$26.44$26.48$26.404,322 shs$17.85 million07/29/2025$26.45$26.44-0.04%$26.49$26.44130 shs$17.85 million07/28/2025$26.45$26.45$26.45$26.451 shs$17.85 million07/25/2025$26.42$26.45+0.11%$26.45$26.451 shs$17.85 million07/24/2025$26.41$26.42+0.04%$26.42$26.421 shs$17.83 million07/23/2025$26.37$26.41+0.15%$26.43$26.38471 shs$17.83 million Get the Latest News and Ratings for CPSO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Calamos S&P 500 Structured Alt Protection ETF - October and its competitors with MarketBeat's FREE daily newsletter. 07/22/2025$26.36$26.37+0.04%$26.40$26.333,908 shs$17.80 million07/21/2025$26.36$26.36$26.41$26.366,328 shs$17.79 million07/18/2025$26.34$26.36+0.08%$26.38$26.359,531 shs$17.79 million07/17/2025$26.31$26.34+0.11%$26.37$26.345,597 shs$17.78 million07/16/2025$26.30$26.31+0.04%$26.31$26.31176 shs$17.76 million07/15/2025$26.31$26.30-0.04%$26.30$26.30235 shs$17.75 million07/14/2025$26.31$26.31$26.31$26.271,022 shs$17.76 million07/11/2025$26.30$26.31+0.04%$26.31$26.31139 shs$17.76 million07/10/2025$26.30$26.30$26.30$26.3029 shs$17.75 million07/09/2025$26.24$26.30+0.23%$26.30$26.30314 shs$17.75 million07/08/2025$26.24$26.24$26.27$26.24314 shs$17.71 million07/07/2025$26.29$26.24-0.19%$26.26$26.24516 shs$17.71 million07/04/2025$26.29$26.29$26.29$26.29465 shs$17.75 million Related Companies QRMI Stock Chart LIVR Stock Chart MVPL Stock Chart MAYT Stock Chart AZAA Stock Chart SEPT Stock Chart ACGR Stock Chart KSPY Stock Chart RSDE Stock Chart GNOV Stock Chart Receive CPSO Stock News and Ratings via EmailSign-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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