Cramer Bails on Bitcoin Due to Quantum Computing Fears

CNBC host Jim Cramer has announced his intention to sell his Bitcoin (BTC) holdings due to concerns about the potential impact of quantum computing on cryptocurrency security. This decision comes after IBM CEO Arvind Krishna warned that advances in quantum computing could eventually threaten the cryptography securing cryptocurrencies, advising investors to become 'rather paranoid' within three to four years.

In a July 30 CNBC interview, Cramer asked Krishna about the possibility of quantum computers cracking the encryption protecting crypto assets. Krishna responded by stating that IBM expects quantum computing to begin contributing to its earnings around 2028 or 2029.

Cramer quickly followed up with an on-air declaration that he intended to sell his Bitcoin, sparking discussion among crypto traders and reigniting debate about the long-term impact of quantum computing on Bitcoin security. While experts say the technology remains far from capable of breaking Bitcoin's secp256k1 cryptography, concerns about future quantum threats continue to grow.

A draft proposal known as BIP-361 notes that more than 34% of Bitcoin had exposed public keys on-chain by March 2026, potentially increasing future vulnerability if sufficiently powerful quantum computers emerge. Meanwhile, NIST plans to phase out 128-bit cryptographic curves after 2035, while Hong Kong has instructed banks to prepare for quantum-resistant security by 2030.