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Quantum stocks face a pivotal Q3 finish as IonQ, D-Wave and Rigetti push commercialization while rates and valuation concerns weigh on shares.

Quantum computing stocks are extending their recent rebound Thursday as investors continue to digest a series of technical developments across the industry. IonQ (NYSE:IONQ) stock is up 4% to $44.08, while D-Wave Quantum (NYSE:QBTS) stock is gaining 3% to $17.23 and Rigetti Computing (NASDAQ:RGTI) stock is adding 2% to $16.28. The gains come as the […]

IonQ just pulled off a quantum computing first that the entire industry has been chasing for years, yet its stock remains deep in the red and its losses dwarf its revenue. Something does not add up, and the explanation cuts to the heart of how markets price revolutionary science against brutal financial reality.

IonQ just claimed a genuine quantum computing breakthrough, but its stock tells a bleaker story and its financials tell a bleaker one still. Before you chase the headline, there is a quieter position in the quantum ecosystem worth understanding.

Key TakeawaysRigetti Computing stock has fallen 49% over the past year, sliding from an intraday peak near $77 in early November 2025 to $16. 01 as of September 23.

Rigetti Computing, Inc. (RGTI) closed at $16.01 in the latest trading session, marking a -3.12% move from the prior day.

Today, Sept. 23, 2026, the trapped-ion quantum computing provider's decoder test and research-center collaboration kept commercialization progress in focus.

IonQ just proved that fixing quantum errors does not require massive supercomputers. By running real-time correction for 408 logical qubits on a single CPU, it cleared a massive scaling roadblock.

Cerebras is posting $510M in revenue with 76% growth and profitability, while Rigetti burns cash despite backing from Amazon and Microsoft.

IonQ just dropped two back-to-back announcements that sent its stock surging while the broader quantum ETF slipped, and the reason one company is pulling so far away from the pack reveals something important about where the real quantum race is being run.

IonQ’s Superion 256 quantum computer will be the first system installed at Nvidia’s quantum research center, say the partners.

IonQ Ignites Quantum Rally With Breakthrough in Real-Time Error Correction

D-Wave Quantum (QBTS) trades near $17.50, about 61% below the high it set inside the past year. Nothing in the market broke to do that. The S&P 500 returned close to 18% over the same twelve months. The stock has already fallen a shock-sized amount without a shock, which is what makes the next leg hard to size.

Rigetti Computing has seen its share price move around sharply in recent years, which naturally puts a spotlight on whether the current US$16.52 level lines up with the book value on its balance sheet. With that kind of volatility in the rear-view mirror, the question now is how much of the recent share price story is actually supported by the company’s net assets per share. Over the past 3 years the stock has delivered a very large gain of roughly 11x. That raises the question of how that...

Rigetti has the cash, technology, and government backing to pursue quantum computing. But its huge ambitions still far outpace its current revenue and commercial progress.

A policy shift could finally move quantum beyond research

Rigetti is tackling a coherence-time bottleneck in its 108-qubit Cepheus system to improve gate fidelity and quantum reliability.

Quantum computing stocks are struggling with a major industry conference on tap as investors eye roadmap to commercialization.

The people who know Wall Street’s hottest quantum computing stocks best are sending all the wrong signals.

Rigetti Computing has been very volatile over the past few years.

IonQ (IONQ) shares rose 9.5% on Thursday, closing at $40.34 after six sessions that had mostly gone the other way. The reason on offer was research: quantum algorithms running inside mainstream engineering software, developed with Synopsys, sped up complex industrial design by up to 14.6%. That is genuine progress. It is also not a sale, and the price you pay for IonQ already assumes a great many sales.

The U.S. Energy Department launches Quantum Genesis Q, a competition to build an error-corrected, ‘scientifically relevant’ quantum computer.

Rigetti Computing (RGTI) sells quantum computing systems into a market its own management calls early, which makes the buy question hard to answer. You cannot lean on earnings, because Rigetti loses money, which leaves its price-to-earnings ratio meaningless. You can measure what you pay for each dollar of sales. Here is that walk, one step at a time.

It could take decades to develop quantum computers that are useful in the real world.

IONQ's strong growth and quantum advances face heavy losses, commercialization risks and a tough macro backdrop as investors seek financial results.

IonQ's collaboration with NVIDIA on quantum optimization just sent the entire pure-play sector surging, but the market signal that actually reveals whether this is a real industry shift or just a speculative bet on one company's research is hiding in plain sight.

Oak Ridge, IonQ, and NVIDIA used generative AI to cut quantum circuit compilation from 11 minutes to 28 seconds, a milestone with implications for IONQ and NVDA investors.

Anderon is already running its first quantum wafers at a 300-millimeter New York foundry

Rigetti Computing, Inc. (RGTI) concluded the recent trading session at $14.79, signifying a -1.99% move from its prior day's close.

IonQ (IONQ) stock trades at about $37, roughly 55% below its high inside the last year. The market did not do that: over the past twelve months the S&P 500 returned 16.6% while IonQ lost 33.4%. Its own numbers went the other way, which makes the downside hard to size.