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'Bitcoin Is Useless': Legendary Bubble Caller Jeremy Grantham Sparks Heated CNBC Clash

Reported by Ccn
Jun 29, 2026· 3 min read
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Key Takeaways
  • • Jeremy Grantham, the co-founder of GMO and legendary bubble forecaster credited with calling the 2000 dot-com and 2008 housing crises, declared bitcoin "useless" and a "speculative" asset without intrinsic value during a CNBC appearance on June 27, 2026.
  • • Grantham predicted bitcoin will "dwindle away with a whimper" over decades rather than experience a dramatic collapse, citing its lack of stability (noting it halved "for no particular reason in a strong economy") and absence of real-world utility beyond facilitating illicit transactions.
  • • The billionaire investor argued bitcoin has failed to prove itself as either a practical payment mechanism or a reliable speculative asset, contrasting it unfavorably with gold, which has maintained solid gains over comparable periods despite recent pullbacks from highs.
  • • Bitcoin was trading approximately 52% below its October 2025 peak at the time of Grantham's comments, hovering below $60,000, with market participants anticipating further downside pressure over subsequent months.
  • • Grantham emphasized that bitcoin lacks demonstrable real-world applications, stating consumers do not use it for serious trades or everyday purchases, positioning its primary utility as a vehicle for illegal money movement.
Summary
Jeremy Grantham renewed his decades-long skepticism of bitcoin during a CNBC "Squawk Box" appearance, characterizing the cryptocurrency as a fundamentally useless and speculative instrument destined for prolonged irrelevance. The GMO co-founder and acclaimed market cycle analyst, known for his prescient calls on major asset bubbles, delivered a forceful critique of bitcoin's viability as either an investment or functional currency.

Grantham's assessment centered on three core deficiencies: the absence of intrinsic value, lack of price stability, and zero real-world utility. He specifically criticized bitcoin's volatility by pointing to its recent 50% decline "for no particular reason in a strong economy," arguing this instability disqualifies it as a dependable store of value. By contrast, he highlighted gold's superior performance over equivalent timeframes, demonstrating that traditional precious metals have delivered tangible returns even after recent corrections from historical peaks.

On the practical application front, Grantham challenged the narrative that bitcoin functions as a viable medium of exchange or speculative trading instrument. He asserted that consumers neither use bitcoin for significant transactions nor everyday purchases at retail establishments. Instead, he argued that its primary demonstrated application is facilitating illicit financial transfers—a damning characterization for an asset marketed as a transformative financial technology.

Rather than predicting a dramatic crash, Grantham forecast a gradual fade into irrelevance, stating that bitcoin will "dwindle away with a whimper" across multiple decades. This measured prediction reflects his longer-term analytical framework, which emphasizes secular trends over cyclical oscillations. At the time of his remarks, bitcoin was trading approximately 52% below its October 2025 peak, with the broader market consensus anticipating extended weakness over the subsequent months.

Grantham's public criticism adds authoritative institutional weight to the skeptical narrative surrounding cryptocurrency valuations, particularly given his track record as a macro strategist and bubble identifier whose previous calls have significantly influenced institutional portfolio positioning.

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Ccn 'Bitcoin Is Useless': Legendary Bubble Caller Jeremy Grantham Sparks Heated CNBC Clash