Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) Chart & Stock Price History $28.32 +0.01 (+0.04%) Closing price 10/3/2025 04:10 PM EasternExtended Trading$28.26 -0.06 (-0.21%) As of 10/3/2025 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisChartHeadlinesHoldingsOwnershipShort InterestBuy This Stock Calamos S&P 500 Structured Alt Protection ETF - May Stock Price Performance The Calamos S&P 500 Structured Alt Protection ETF - May (CPSM) fund chart highlights key performance trends across multiple timeframes. Over the last 12 months, the fund's price has increased 7.60%, with a year-to-date return of 6.07%. In the past month, the fund has increased 0.53%, reflecting recent market activity. As of the latest close, Calamos S&P 500 Structured Alt Protection ETF - May traded at $28.32 with a market cap of $62.30 million and volume of 3,117 shares. Receive CPSM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Calamos S&P 500 Structured Alt Protection ETF - May and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Read our full terms of service and privacy policy. 5 Day Performance+0.11%1 Month Performance+0.53%3 Month Performance+1.54%Year-To-Date Performance+6.07%1 Year Performance+7.60% CPSM Stock Chart for Sunday, October, 5, 2025 CPSM Chart by TradingView Calamos S&P 500 Structured Alt Protection ETF - May 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 Capitalization10/03/2025$28.31$28.32+0.04%$28.32$28.273,117 shs$62.30 million10/02/2025$28.31$28.31$28.34$28.263,741 shs$65.11 million10/01/2025$28.29$28.31+0.07%$28.31$28.24416 shs$65.11 million09/30/2025$28.28$28.29+0.04%$28.29$28.24466 shs$65.07 million09/29/2025$28.26$28.28+0.07%$28.28$28.2441,951 shs$65.04 million09/26/2025$28.25$28.26+0.04%$28.31$28.211,058 shs$65.00 million09/25/2025$28.24$28.25+0.04%$28.25$28.211,720 shs$64.98 million09/24/2025$28.26$28.24-0.07%$28.24$28.221,215 shs$64.95 million09/23/2025$28.28$28.26-0.07%$28.29$28.232,357 shs$65.00 million09/22/2025$28.27$28.28+0.04%$28.28$28.224,713 shs$65.04 million Get the Latest News and Ratings for CPSM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Calamos S&P 500 Structured Alt Protection ETF - May and its competitors with MarketBeat's FREE daily newsletter. 09/19/2025$28.24$28.27+0.11%$28.28$28.212,805 shs$65.02 million09/18/2025$28.23$28.24+0.04%$28.26$28.204,620 shs$64.95 million09/17/2025$28.24$28.23-0.04%$28.32$28.1813,998 shs$64.93 million09/16/2025$28.24$28.24$28.24$28.20471 shs$64.95 million09/15/2025$28.20$28.24+0.14%$28.26$28.174,686 shs$64.95 million09/12/2025$28.22$28.20-0.07%$28.24$28.109,084 shs$64.86 million09/11/2025$28.21$28.22+0.04%$28.28$28.1713,221 shs$64.91 million09/10/2025$28.19$28.21+0.07%$28.21$28.174,220 shs$64.88 million09/09/2025$28.17$28.19+0.07%$28.20$28.153,037 shs$64.84 million09/08/2025$28.17$28.17$28.18$28.143,664 shs$64.79 million09/05/2025$28.17$28.17$28.25$28.142,992 shs$64.79 million09/04/2025$28.14$28.17+0.11%$28.17$28.104,603 shs$64.79 million Related Companies AllianzIM U.S. Equity Buffer15 Uncapped Jan ETF Stock Chart AllianzIM U.S. Large Cap 6 Month Buffer10 Feb/Aug ETF Stock Chart Tradr 2X Long Innovation 100 Monthly ETF Stock Chart iShares Large Cap Value Active ETF Stock Chart AllianzIM U.S. Large Cap Buffer10 Oct ETF Stock Chart AllianzIM U.S. Large Cap Buffer20 Nov ETF Stock Chart AllianzIM U.S. Large Cap Buffer20 Jun ETF Stock Chart ProShares S&P 500 EX-Financials ETF Stock Chart AllianzIM U.S. Large Cap Buffer10 Jan ETF Stock Chart AllianzIM U.S. Large Cap Buffer20 Apr ETF Stock Chart Receive CPSM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Calamos S&P 500 Structured Alt Protection ETF - May and its competitors with MarketBeat's FREE daily newsletter. 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