Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) Chart & Stock Price History $25.75 -0.09 (-0.35%) As of 05/22/2025 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 1.06%. In the past month, the fund has increased 2.14%, reflecting recent market activity. As of the latest close, Calamos S&P 500 Structured Alt Protection ETF - October traded at $25.75 with a market cap of $16.09 million and volume of 2 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 Performance-0.35%1 Month Performance+2.14%3 Month Performance+0.08%Year-To-Date Performance+1.06% CPSO Stock Chart for Friday, May, 23, 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 Capitalization05/22/2025$25.75$25.75$25.75$25.752 shs$16.09 million05/21/2025$25.84$25.75-0.35%$25.75$25.752 shs$16.09 million05/20/2025$25.85$25.84-0.04%$25.84$25.842 shs$16.15 million05/19/2025$25.84$25.85+0.04%$25.85$25.8525 shs$16.16 million05/16/2025$25.81$25.84+0.12%$25.85$25.85281 shs$16.15 million05/15/2025$25.76$25.81+0.19%$25.81$25.76435 shs$16.13 million05/14/2025$25.76$25.76$25.76$25.7670 shs$16.10 million05/13/2025$25.69$25.76+0.27%$25.77$25.744,766 shs$18.68 million05/12/2025$25.50$25.69+0.75%$25.69$25.6948 shs$18.63 million05/09/2025$25.52$25.50-0.08%$25.50$25.5021 shs$18.49 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. 05/08/2025$25.48$25.52+0.16%$25.52$25.52367 shs$18.50 million05/07/2025$25.47$25.48+0.04%$25.53$25.47367 shs$18.47 million05/06/2025$25.50$25.47-0.12%$25.47$25.472,027 shs$18.47 million05/05/2025$25.55$25.50-0.20%$25.55$25.48477 shs$18.49 million05/02/2025$25.48$25.55+0.27%$25.59$25.55543 shs$18.52 million05/01/2025$25.49$25.48-0.04%$25.53$25.48652 shs$18.47 million04/30/2025$25.39$25.49+0.39%$25.49$25.452,682 shs$18.48 million04/29/2025$25.35$25.39+0.16%$25.39$25.33851 shs$18.41 million04/28/2025$25.34$25.35+0.04%$25.35$25.35115 shs$18.38 million04/25/2025$25.30$25.34+0.16%$25.34$25.34162 shs$18.37 million04/24/2025$25.21$25.30+0.36%$25.30$25.21211 shs$18.34 million04/23/2025$25.12$25.21+0.36%$25.26$25.1783,505 shs$18.28 million04/22/2025$25.04$25.12+0.32%$25.13$25.071,351 shs$18.21 million Related Companies FEDL Stock Chart QNXT Stock Chart MAYT Stock Chart LIVR Stock Chart SEPT Stock Chart CPSP Stock Chart CPNM Stock Chart ACGR Stock Chart JUNT Stock Chart QCJL 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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