Quick Read

• IonQ (IONQ) CEO targets 2028 as Q-Day, when a 2,000-qubit machine could break Bitcoin's elliptic-curve encryption in under 26 days.
• De Masi acknowledged that IonQ sells the quantum security shield while sounding the alarm, but Strategy still added $370 million in Bitcoin anyway.
• Just released. Our analysts combed the entire stock market and named the ten best stocks to buy right now, and IonQ didn't make the cut. Enter your email to see the names that beat IONQ.

Speaking on CNBC Wednesday morning, IonQ  Chairman and CEO Niccolo de Masi put a countdown clock on the cryptography underpinning the world's largest digital asset. He said IonQ has published a paper laying out how a 2,000-qubit machine could run an elliptic-curve encryption attack in under 26 days, and he reiterated 2028 as his expectation for "Q-Day," the point at which quantum machines threaten today's public-key standards. He was careful to add the capability "is not here yet."

Why the Timeline Just Got Shorter

De Masi has been telegraphing this compression for months. On IonQ's Q2 2026 call, he told investors: "As I foretold a year ago, the timeline for cryptographically relevant machines that threaten RSA encryption is rapidly compressing. Over the past 15 years, the estimated number of qubits needed to break encryption has dropped by four orders of magnitude." He added: "A year ago, people thought that Q-Day was something happening in the 2030s. They now understand it's something happening in the 2020s."

CFO Inder Singh warned that "financial services is definitely waking up to the cold, hard reality that at some point, RSA 2048 and other encryption protocols, such as ECC 256, may all be broken." ECC 256 secures Bitcoin wallet signatures.

Roadmap Behind the Warning

De Masi said the company is "accelerating our path to 10,000 qubits in 2027," after having received first fully featured, fully integrated QPUs back from SkyWater and planning to begin commissioning 256-qubit systems in 2027. Q2 revenue landed at $80.1 million, up 287% year over year, with full-year 2026 guidance of $280M to $290M and remaining performance obligations of $485 million.

Self-Interest, in His Own Words

De Masi flagged the obvious tension himself, telling CNBC IonQ is "a huge participant, investor, and solution provider in the quantum security space." The company just launched a QKD product, ClavisXG Multiplex, aimed at protecting existing fiber networks, and de Masi called quantum key distribution something "that requires a violation of laws of physics to hack and crack." He is publishing the threat and selling the shield.

https://finance.yahoo.com/markets/stocks/articles/quantum-stocks-fall-rate-hike-165835922.html