IonQ (IONQ) carries one figure above all others that investors should monitor closely: the backlog of signed contracts the company has yet to fulfill.
While many market participants still treat quantum computing as a distant scientific pursuit, actual customers are signing real contracts with IonQ, signaling early commercial momentum.
Despite that progress, IONQ stock has fallen 48% over the past year, dramatically underperforming the S&P 500, which returned 17.1% over the same period.
That stark divergence highlights the central contradiction the company must resolve if it hopes to rebuild investor confidence and justify its premium valuation.
IonQ ended the second quarter of 2026 with $485 million in signed, undelivered work, a steep increase from just $122 million recorded a year earlier.
Management detailed those figures during its August 5, 2026 earnings call, offering investors a concrete signal that customer demand is accelerating well ahead of revenue recognition.
The company is already placing hardware in the field, having begun shipping system components to KISTI, a research institute in South Korea, during the quarter.
IonQ was also handling final assembly of a fifth-generation computer for QuantumBasel in Switzerland, an existing customer that had previously purchased an older IonQ machine.
Management cited deployments of those fifth-generation systems as the largest single reason revenue beat its own internal expectations for the period.
New contracts followed those installations quickly, with IonQ announcing on September 24, 2026, a deal to deliver a Superion 256 quantum computer to Florida International University.
Just days later, on October 7, the company announced it had signed an agreement with DARPA, the U.S. defense research agency, carrying a potential value of up to $300 million.
The primary concern surrounding IonQ remains a massive gap between spending and revenue, with an operating loss of roughly $1.0 billion against approximately $0.2 billion in sales over the last twelve months.
Even after the recent share price decline, IONQ still trades at 61.7 times sales, compared to a multiple of just 3.1 for the broader S&P 500.
On the August earnings call, management raised its 2026 revenue forecast to a range of $280 million to $290 million, excluding SkyWater, the chip foundry IonQ acquired for $1.8 billion.
However, a growing order book does not guarantee profitability, and IonQ’s gross margin has already contracted sharply, falling to 29% from 54% a year earlier.
The company is therefore retaining less of each revenue dollar than it did previously, even as its total sales figures continue to climb.
A critical risk within that order book is that some agreements involve hardware not yet in service, specifically the Superion 256 advanced 256-qubit machine required by both the Florida contract and a September 21 agreement with South Korean company SDT.
Management indicated on the August call that it planned to begin putting 256-qubit systems into service in 2027, meaning the financial impact of those deals will not appear in results until next year at the earliest.
The DARPA contract also carries its own uncertainties, as the stated ceiling of up to $300 million is not a guarantee, and funding beyond an initial amount depends on future government budget decisions.
If IonQ’s standalone core business reports 2026 revenue below $280 million, the low end of management’s own guidance range, it would signal the company is delivering on orders more slowly than planned.
