
BlackRock seeks to shield bitcoin investors from losses after rival.
BlackRock's proposed fund follows similar products from Calamos that helped investors avoid steep losses during bitcoin's selloff. While bitcoin BTC$82,936.07 lost more than half its value in the past year's selloff, investors in one Calamos Investments’ fund were spared much of the pain. The Naperville, Illinois-based firm's Bitcoin Structured Alt Protection ETF – October (CBOO) dropped just 1% since the start of its one-year protection period in October 2025, according.






