Jim Cramer says he's selling Bitcoin after hearing IBM's Arvind Krishna warn that quantum computers could crack today's encryption. The CNBC host made the announcement following a July 31 interview where Krishna advised investors to be "paranoid" about the quantum threat to crypto security.

"Arvind Krishna knows quantum incredibly," Cramer said on air. "He knows Bitcoin and quantum. And I'm going to sell mine."

There's a catch though. Cramer hasn't revealed how much Bitcoin he actually owns, and no verified wallet has ever been linked to him. Whether he even holds the asset at all remains unconfirmed. Bitcoin itself seemed unmoved by the declaration, trading near $63,720 with a modest 1.65% daily gain.

This isn't Cramer's first Bitcoin rodeo. Back in December 2017, he called it "Monopoly money" as prices neared $20,000. He compared buying crypto to gambling, not investing. Fast forward to late 2020 and he'd reversed course, claiming to have bought around the $10,000 level and expanded his position.

That bullish streak evaporated in summer 2021 when China cracked down on mining. Cramer reportedly dumped most of his holdings. Before the January 2024 spot Bitcoin ETF launch, he predicted a correction. The asset dipped toward $40,000 but quickly rebounded past $70,000, proving him wrong again.

Early 2025 brought another flip. Bitcoin became "a great thing to have in a portfolio." He pushed investors to own it directly rather than chase exposure through firms like Michael Saylor's Strategy. Just months later in July 2026, he turned bearish again, calling Bitcoin and gold "bad money" as money rotated into high-growth plays.

This piece is informational only and should not be construed as financial advice. Crypto investments carry substantial risk.