
Calamos Unveils Two Large-Cap Structured Protection ETFs
Calamos Investments LLC announced the launch of two ETFS, Calamos S&P 500 Structured Alt Protection ETF – September (CPST) and the Calamos Nasdaq-100 Structured Alt Protection ET – September (CPNS), for financial advisors and investors.
The firm, which has launched seven funds since May, said the latest ETFs provide “100% downside-protected exposure” to the S&P 500 and Nasdaq-100 with “attractive” upside cap rates over a one-year period before fees and expenses.
CPST and CPNS offer a 7.50% and 8.35% cap rate, respectively. Both ETFs have an annual expense ratio of 0.69%. The ETFs reset annually, offering investors a new upside cap with refreshed protection against negative returns of the benchmark over the subsequent 12-month period, the firm said.
“Performance through recent market volatility demonstrated the ability of our Structured Protection ETFs to preserve investor capital while capturing market upside potential,” John Koudounis, president and CEO of Calamos Investments said.
Headquartered in Chicago, Calamos manages $38.5 billion, including over $16 billion in liquid alternatives assets as of July 31, 2024. The firm offers strategies through ETFs, mutual funds, closed-end funds, interval funds, UCITS funds and separately managed portfolios.

