Bitcoin · Bitcoin ETF · CoinDesk
BlackRock seeks to shield bitcoin investors from losses after rival fund weathers 50% crash
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While bitcoin BTC $82.846,65 lost more than half its value in the past year's selloff, investors in one Calamos Investments’ fund were spared much of the pain.
Key facts
- Diversified RWA stablecoins sustain 5-7% yield from real credit as crypto funding compresses to ~4%
- The Naperville, Illinois-based firm's Bitcoin Structured Alt Protection ETF, October (CBOO) dropped 1% since the start of its one-year protection period in October 2025, according to a Calamos
- In June, it launched the Bitcoin Premium Income Fund (BITA), which holds bitcoin and IBIT shares while selling call options on roughly 25% to 35% of its portfolio to generate monthly income
- While bitcoin BTC $82.846,65 lost more than half its value in the past year's selloff, investors in one Calamos Investments’ fund were spared much of the pain
Summary
BlackRock filed Monday to offer a bitcoin-linked ETF that seeks to limit losses while allowing investors to benefit from price gains. Calamos' protected bitcoin ETF lost 1% since October 2025, even as bitcoin tumbled more than 50% from its peak. The filing follows BlackRock's June introduction of a bitcoin income ETF as the firm expands beyond funds that track bitcoin's price. The Naperville, Illinois-based firm's Bitcoin Structured Alt Protection ETF, October (CBOO) dropped 1% since the start of its one-year protection period in October 2025, according to a Calamos spokesperson.