Calamos S&P 500 Structured Alt Protection ETF - September (CPST) Chart & Stock Price History $26.18 -0.01 (-0.04%) As of 07/11/2025 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 3.40%. In the past month, the fund has increased 1.16%, reflecting recent market activity. As of the latest close, Calamos S&P 500 Structured Alt Protection ETF - September traded at $26.18 with a market cap of $26.18 million and volume of 1,444 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+1.16%3 Month Performance+4.72%Year-To-Date Performance+3.40% CPST Stock Chart for Saturday, July, 12, 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 Capitalization07/11/2025$26.19$26.18-0.04%$26.19$26.171,444 shs$26.18 million07/10/2025$26.18$26.19+0.04%$26.20$26.188,166 shs$26.19 million07/09/2025$26.15$26.18+0.11%$26.19$26.1915 shs$26.18 million07/08/2025$26.13$26.15+0.08%$26.17$26.15142 shs$26.15 million07/07/2025$26.17$26.13-0.15%$26.14$26.095,353 shs$26.13 million07/04/2025$26.17$26.17$26.17$26.17467 shs$26.17 million07/03/2025$26.13$26.17+0.15%$26.17$26.17467 shs$26.17 million07/02/2025$26.10$26.13+0.11%$26.13$26.131,127 shs$26.13 million07/01/2025$26.11$26.10-0.04%$26.10$26.10804 shs$26.10 million06/30/2025$26.08$26.11+0.12%$26.11$26.11804 shs$26.11 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. 06/27/2025$26.05$26.08+0.12%$26.08$26.08804 shs$26.08 million06/26/2025$26.00$26.05+0.19%$26.05$26.05804 shs$26.05 million06/25/2025$26.01$26.00-0.04%$26.02$26.00804 shs$26 million06/24/2025$25.92$26.01+0.35%$26.01$26.00684 shs$26.01 million06/23/2025$25.84$25.92+0.31%$25.92$25.9294 shs$25.92 million06/20/2025$25.83$25.84+0.04%$25.86$25.801,693 shs$25.84 million06/19/2025$25.83$25.83$25.84$25.83113 shs$25.83 million06/18/2025$25.83$25.83$25.84$25.83113 shs$25.83 million06/17/2025$25.90$25.83-0.27%$25.84$25.84202 shs$25.83 million06/16/2025$25.81$25.90+0.35%$25.90$25.88202 shs$25.90 million06/13/2025$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 million Related Companies AllianzIM U.S. Large Cap Buffer10 Mar ETF Stock Chart Calvert US Large-Cap Diversity, Equity and Inclusion Index ETF Stock Chart First Trust S&P 500 Diversified Dividend Aristocrats ETF Stock Chart Calamos S&P 500Structured Alt Protection ETF- February Stock Chart FT Vest U.S. Equity Equal Weight Buffer ETF - September Stock Chart Acquirers Small and Micro Deep Value ETF Stock Chart Federated Hermes MDT Large Cap Core ETF Stock Chart Direxion Daily S&P 500 High Beta Bear 3X Shares Stock Chart Polen Capital International Growth ETF Stock Chart FT Vest U.S. Equity Equal Weight Buffer ETF - June 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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