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NewsDigital Assets · $BTC

Mark Cuban calls Bitcoin's August surge a short squeeze as BlackRock makes the dual-nature case

Bitcoin ($BTC) is up more than 25% in August, and the print has reopened a debate that billionaire investor Mark Cuban thought he had settled. Cuban said last week the rally is the product of a temporary short squeeze, not evidence that anything has structurally changed, and he is sticking with the call he made in May when he sold his entire Bitcoin position. Asset management giant BlackRock (NYSE: BLK) disagrees, and so does Coinbase Global (NASDAQ: COIN) CEO Brian Armstrong, who said Bitcoin could reach $400,000 by 2030.

By Miles BroadbentDigital Assets DeskAugust 30, 20262 min read$BTC
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Key takeaways

  • Bitcoin is up more than 25% in August, reopening a debate over whether the rally signals a structural change.
  • Mark Cuban says the surge is a temporary short squeeze, sticking with the thesis behind his May exit when he sold his entire Bitcoin position.
  • BlackRock argues Bitcoin has a dual nature, sometimes behaving like a safe haven and sometimes like a high-beta tech stock, which it says explains Bitcoin's long-run appreciation.
  • Coinbase CEO Brian Armstrong believes the bottom is in and projects Bitcoin could reach $400,000 by 2030.
  • Cuban's thesis holds Bitcoin should rally during geopolitical stress or amid the U.S. government's $40 trillion debt load, and he concluded it had 'lost the plot' as a hedge.

Bitcoin ($BTC) is up more than 25% in August, and the print has reopened a debate that billionaire investor Mark Cuban thought he had settled. Cuban said last week the rally is the product of a temporary short squeeze, not evidence that anything has structurally changed, and he is sticking with the call he made in May when he sold his entire Bitcoin position. Asset management giant BlackRock (NYSE: BLK) disagrees, and so does Coinbase Global (NASDAQ: COIN) CEO Brian Armstrong, who said Bitcoin could reach $400,000 by 2030.

Cuban's case rests on a specific thesis: Bitcoin is a risk-off asset, a place for capital when macro or geopolitical stress peaks. It should rally when geopolitical tensions escalate or when the U.S. government is carrying a $40 trillion debt load. By May's measure it was not doing that, and Cuban concluded it had "lost the plot" as a financial hedge, an alternative to gold, and a reliable safe haven. Former Federal Reserve chairman Jerome Powell had lent the safe-haven framing some credibility in December 2024 when he publicly called Bitcoin digital gold, which made Cuban's May exit look well-reasoned at the time.

BlackRock's dual-nature argument

BlackRock's position complicates the clean binary underlying Cuban's thesis. In a recent report on Bitcoin as a low-correlation portfolio diversifier, the firm argued that Bitcoin can behave like a safe haven at some points in its cycle and like a high-beta tech stock at others. That dual nature, BlackRock contended, helps explain Bitcoin's long-run appreciation since launch. The short-squeeze framing Cuban is using describes a mechanical price event. The BlackRock framing describes a structural characteristic the asset has always carried.

What Armstrong is watching and what comes next

Armstrong said he believes the Bitcoin bottom is in and that the asset is entering the bull market phase of its historical cycle. His $400,000 by 2030 price target is a projection tied to that cycle thesis. The setup, by that read, is Bitcoin transitioning back toward risk-on behavior, drawing investors who see potential for outsized returns over several years. The clearest test of Cuban's counter comes the next time a major geopolitical flare-up or a debt-ceiling moment should, in theory, send Bitcoin higher and does not.

Related reading

About this story

Filed by the digital assets desk of MarketPR on August 30, 2026. Source: finance.yahoo.com. Indicative figures are not investment advice.

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Frequently asked

Why does Mark Cuban think Bitcoin's August rally isn't meaningful?

Cuban attributes the more-than-25% August gain to a temporary short squeeze, a mechanical price event rather than evidence of any structural change.

When did Cuban sell his Bitcoin and why?

Cuban sold his entire Bitcoin position in May after concluding it had 'lost the plot' as a financial hedge, an alternative to gold, and a reliable safe haven.

How does BlackRock's view differ from Cuban's?

BlackRock argues Bitcoin can behave like a safe haven at some points in its cycle and like a high-beta tech stock at others, describing a structural dual nature rather than Cuban's clean binary.

What is Brian Armstrong's price prediction for Bitcoin?

Coinbase CEO Brian Armstrong said Bitcoin could reach $400,000 by 2030, tied to his view that the bottom is in and a bull market phase is beginning.

What would test Cuban's thesis?

The clearest test comes the next time a major geopolitical flare-up or debt-ceiling moment should in theory send Bitcoin higher and it fails to do so.