Structured Protection ETFs™ Weekly Rate Sheet

Before investing, carefully consider the fund’s investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information which can be obtained by calling 1-866-363-9219. Read it carefully before investing.

There is no guarantee the Fund will be successful in providing the sought-after protection. The outcomes that the Fund seeks to provide may only be realized if you are holding shares on the first day of the Outcome Period and continue to hold them on the last day of the Outcome Period, approximately one year. There is no guarantee that the Outcomes for an Outcome Period will be realized or that the Fund will achieve its investment objective. If the Outcome Period has begun and the Underlying ETF has increased in value, any appreciation of the Fund by virtue of increases in the Underlying ETF since the commencement of the Outcome Period will not be protected by the Buffer, and an investor could experience losses until the Underlying ETF returns to the original price at the commencement of the Outcome Period. Fund shareholders are subject to an upside return cap (the "Cap") that represents the maximum percentage return an investor can achieve from an investment in the funds' for the Outcome Period, before fees and expenses. If the Outcome Period has begun and the Fund has increased in value to a level near to the Cap, an investor purchasing at that price has little or no ability to achieve gains but remains vulnerable to downside risks. Additionally, the Cap may rise or fall from one Outcome Period to the next. The Cap, and the Fund's position relative to it, should be considered before investing in the Fund. The Fund's website, www.calamos.com, provides important Fund information as well information relating to the potential outcomes of an investment in a Fund on a daily basis.