Calamos S&P 500 Structured Alt Protection ETF - September (CPST) Chart & Stock Price History $25.81 -0.07 (-0.27%) As of 06/13/2025 04:10 PM Eastern Add Compare Share Share Chart Stock AnalysisChartHoldingsOwnershipBuy This Stock Calamos S&P 500 Structured Alt Protection ETF - September Stock Price Performance The Calamos S&P 500 Structured Alt Protection ETF - September (CPST) fund chart highlights key performance trends across multiple timeframes. Since the beginning of the year, the fund increased 1.94%. In the past month, the fund has increased 0.35%, reflecting recent market activity. As of the latest close, Calamos S&P 500 Structured Alt Protection ETF - September traded at $25.81 with a market cap of $25.81 million and volume of 389 shares. Receive CPST Stock News and Ratings via EmailSign-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 5 Day Performance-0.19%1 Month Performance+0.35%3 Month Performance+2.46%Year-To-Date Performance+1.94% CPST Stock Chart for Monday, June, 16, 2025 CPST Chart by TradingView Calamos S&P 500 Structured Alt Protection ETF - September 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 Capitalization06/13/2025$25.88$25.81-0.27%$25.83$25.80389 shs$25.81 million06/12/2025$25.86$25.88+0.08%$25.91$25.866,604 shs$25.88 million06/11/2025$25.87$25.86-0.04%$25.86$25.85200 shs$25.21 million06/10/2025$25.82$25.87+0.19%$25.87$25.813,587 shs$25.22 million06/09/2025$25.83$25.82-0.04%$25.84$25.813,695 shs$25.18 million06/06/2025$25.76$25.83+0.27%$25.83$25.773,151 shs$25.18 million06/05/2025$25.78$25.76-0.08%$25.77$25.762,277 shs$25.12 million06/04/2025$25.78$25.78$25.78$25.781 shs$25.14 million06/03/2025$25.73$25.78+0.19%$25.78$25.73402 shs$25.14 million06/02/2025$25.71$25.73+0.08%$25.74$25.7110,379 shs$25.09 million Get the Latest News and Ratings for CPST and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Calamos S&P 500 Structured Alt Protection ETF - September and its competitors with MarketBeat's FREE daily newsletter. 05/30/2025$25.69$25.71+0.08%$25.71$25.713 shs$25.07 million05/29/2025$25.66$25.69+0.12%$25.69$25.694,518 shs$25.05 million05/28/2025$25.69$25.66-0.12%$25.70$25.654,518 shs$25.02 million05/27/2025$25.55$25.69+0.55%$25.69$25.55580 shs$25.05 million05/26/2025$25.55$25.55$25.55$25.5552 shs$24.91 million05/23/2025$25.59$25.55-0.16%$25.55$25.5552 shs$24.91 million05/22/2025$25.58$25.59+0.04%$25.59$25.57302 shs$24.95 million05/21/2025$25.70$25.58-0.47%$25.68$25.581,411 shs$24.94 million05/20/2025$25.73$25.70-0.12%$25.70$25.703 shs$25.06 million05/19/2025$25.72$25.73+0.04%$25.73$25.7382 shs$25.09 million05/16/2025$25.67$25.72+0.19%$25.72$25.63200 shs$25.08 million05/15/2025$25.62$25.67+0.20%$25.67$25.63281 shs$25.03 million Related Companies Acquirers Small and Micro Deep Value ETF Stock Chart Calvert US Large-Cap Diversity, Equity and Inclusion Index ETF Stock Chart Calamos S&P 500Structured Alt Protection ETF- February Stock Chart Tradr 2X Long Triple Q Monthly ETF Stock Chart SoFi Social 50 ETF Stock Chart FT Vest U.S. Equity Equal Weight Buffer ETF - June Stock Chart First Trust S&P 500 Diversified Dividend Aristocrats ETF Stock Chart Direxion Daily S&P 500 High Beta Bear 3X Shares Stock Chart Calamos Nasdaq - 100 Structured Alt Protection ETF - June Stock Chart Argent Large Cap ETF Stock Chart Receive CPST Stock News and Ratings via EmailSign-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. 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