Crypto Stocks Lost Up to 54% in October as Hedge Funds Erased Every AI Stock Purchase Since 2025: Why Did Bitcoin Miners Fall Hardest?

Crypto stocks start November after an October that cost them up to 54%, more than six times Bitcoin’s drop, as Goldman Sachs data showed hedge funds sold enough AI stocks in five sessions to wipe out all their net AI buying since early 2025. That matters for crypto because the biggest losers weren’t the exchanges. They were Bitcoin miners, which have spent two years renting their power and data centres to AI companies and now trade like AI infrastructure. Cipher Digital (CIFR) fell 53.9% between the September 30 and October 30 closes, and IREN lost 41.4%.