Calamos Launches S&P 500® Structured Alt Protection ETF™ – May (CPSM), Announces 9.81% Upside Cap Rate with 100% Downside Protection Over One Year CPSM’s 9.81% cap compares favorably with the 8%, 20-year average price return of the S&P 500. The Calamos Structured Protection suite combines Calamos’ decades-long alternatives and options investing expertise within the liquid, [...] The post Calamos Launches S&P 500® Structured Alt Protection ETF™ – May (CPSM) appeared first on ETF Trends .