Jim Cramer Sells Bitcoin After IBM CEO Warns of Quantum Risk

Television host Jim Cramer announced he sold his Bitcoin following an interview with IBM CEO Arvind Krishna, who warned that quantum computers could eventually break the cryptography that secures digital assets.

During the televised interview, Cramer asked whether advances in quantum computing might allow attackers to steal private keys and access wallets. Krishna advised a cautious timeline: “I think that you should give yourself three or four years,” adding that at that point people might become “rather paranoid” about the threat. Cramer responded on air that he would liquidate his Bitcoin holdings and expressed concern that Ethereum could face similar risks.

Cramer previously exited crypto markets in December 2022 when Bitcoin traded near $16,800. Since that sale, Bitcoin’s price rose more than 400% over the following three years. Social-media traders reacted quickly to Tuesday’s announcement, with many invoking the so-called “inverse Cramer” trade strategy of buying when he sells.

Security professionals and industry participants describe the quantum threat as theoretically possible but currently limited by technical constraints. Practical attacks that could compromise major blockchains would require substantial improvements in quantum hardware and in error-correction techniques.

Recent security incidents underscore other, more immediate risks. An exploit tied to a Coldcard hardware wallet has been associated with more than $100 million in losses, and a series of decentralized finance breaches has totaled well over $300 million. Some protocol teams have used advanced tools, including artificial intelligence, to search for and patch vulnerabilities; a privacy-focused protocol reported finding and fixing weaknesses after using frontier AI tools.

Hardware wallet manufacturers and security firms say the Coldcard incident and similar breaches are prompting changes in how wallets are audited and defended. A major hardware wallet maker noted that AI-driven vulnerability discovery is pushing firms to rethink firmware audits and threat models.

The announcement coincided with a modest uptick in Bitcoin’s price; the cryptocurrency rose about 1.6% on the day of the statement. Academic and development efforts are underway to evaluate quantum-resistant cryptographic algorithms, and some developers are proposing audits and migration plans to prepare for any future need to shift to post-quantum cryptography.