According to Odaily, asset management firm Calamos has announced the introduction of three Bitcoin exchange-traded funds (ETFs) designed to offer downside protection for investors. The ETFs are named Calamos Bitcoin Structured Alt Protection ETF, Calamos Bitcoin 90 Series Structured Alt Protection ETF, and Calamos Bitcoin 80 Series Structured Alt Protection ETF. These funds plan to invest in U.S. stock benchmark indices and Bitcoin, with trading expected to commence on July 8.