Calamos S&P 500 Structured Alt Protection ETF - September (CPST) Chart & Stock Price History $24.84 -0.01 (-0.04%) As of 04/17/2025 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 5 Day Performance-0.64%1 Month Performance-1.55%3 Month Performance-2.47%6 Month Performance-1.21%Year-To-Date Performance-1.90% 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 CPST Stock Chart for Saturday, April, 19, 2025 CPST Chart by TradingView Calamos S&P 500 Structured Alt Protection ETF - September Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization04/18/2025$24.84$24.84$24.85$24.84505 shs$24.84 million04/17/2025$24.85$24.84-0.04%$24.85$24.84505 shs$24.84 million04/16/2025$24.98$24.85-0.52%$24.94$24.851,037 shs$24.85 million04/15/2025$25.00$24.98-0.08%$24.98$24.941,038 shs$24.98 million04/14/2025$25.00$25.00$25.00$25.00861 shs$25 million04/11/2025$24.92$25.00+0.32%$25.00$24.926,043 shs$25 million04/10/2025$25.07$24.92-0.60%$24.92$24.891,370 shs$24.92 million04/09/2025$24.67$25.07+1.62%$25.15$24.669,733 shs$25.07 million04/09/2025$24.67$25.07+1.62%$25.15$24.669,733 shs$25.07 million04/08/2025$24.68$24.67-0.04%$24.70$24.67502 shs$24.67 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. 04/08/2025$24.68$24.67-0.04%$24.70$24.67502 shs$24.67 million04/07/2025$24.67$24.68+0.04%$24.74$24.6313,984 shs$25.42 million04/04/2025$24.93$24.67-1.04%$24.78$24.671,161 shs$25.41 million04/03/2025$25.26$24.93-1.31%$24.93$24.93435 shs$25.68 million04/02/2025$25.21$25.26+0.20%$25.26$25.26700 shs$26.02 million04/01/2025$25.18$25.21+0.12%$25.21$25.1518,411 shs$25.97 million03/31/2025$25.14$25.18+0.16%$25.18$25.18112 shs$25.94 million03/28/2025$25.27$25.14-0.51%$25.14$25.14135 shs$25.89 million03/27/2025$25.28$25.27-0.04%$25.27$25.261,666 shs$26.03 million03/26/2025$25.35$25.28-0.28%$25.30$25.28370 shs$26.04 million03/25/2025$25.34$25.35+0.04%$25.35$25.35684 shs$26.11 million03/24/2025$25.20$25.34+0.56%$25.34$25.28684 shs$26.10 million03/21/2025$25.20$25.20$25.20$25.151,948 shs$25.96 million03/20/2025$25.23$25.20-0.12%$25.20$25.171,687 shs$25.96 million03/19/2025$25.15$25.23+0.32%$25.23$25.23318 shs$25.99 million03/18/2025$25.22$25.15-0.28%$25.15$25.15282 shs$25.90 million Related Companies Roundhill S&P 500 Target 20 Managed Distribution ETF Stock Chart Cambria Tax Aware ETF Stock Chart QRAFT AI-Enhanced U.S. Large Cap Momentum ETF Stock Chart AllianzIM U.S. Large Cap Buffer10 Mar 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 AllianzIM Buffer20 Allocation ETF Stock Chart Federated Hermes MDT Large Cap Value ETF Stock Chart ProShares S&P 500 EX-Health Care ETF Stock Chart Horizon Expedition Plus 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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