IonQ, Inc. (NYSE: IONQ) has surged 15.9% since its second-quarter earnings release on August 5, 2026, outpacing rival quantum computing stocks by a wide margin.

The post-earnings rally has left competitors behind, with Rigetti Computing (NASDAQ: RGTI) gaining just 12.1% and D-Wave Quantum (NYSE: QBTS) declining 1% over the same period.

The rebound follows a brutal July selloff that hammered valuations across pure-play quantum stocks, with IonQ among the hardest hit during that downturn.

Strong fundamentals are driving the recovery, with IonQ reporting second-quarter revenue growth of 287% year over year, coming in 20% above the midpoint of its own prior guidance.

Growth was fueled by global deployments of its Tempo systems, expanded cloud utilization, and broadening commercial momentum, with 60% of revenues now sourced from commercial customers.

International revenues represented approximately 50% of the total, while multi-product revenues accounted for around 25%, signaling growing diversification across IonQ’s business.

Remaining performance obligations climbed 297% year over year to reach $485 million, giving management confidence to raise its full-year 2026 revenue outlook to between $280 million and $290 million.

Management expects between $135 million and $145 million in second-half revenues and has stated it does not anticipate a sequential revenue decline through the remainder of the year.

The company’s July 31 completion of the SkyWater acquisition creates a vertically integrated, U.S.-based quantum manufacturing platform, aligning closely with a June 22 White House executive order calling for accelerated quantum commercialization.

New defense and national security initiatives with Anduril and Sandia National Laboratories were also cited in IonQ’s second-quarter update, potentially expanding its addressable government market significantly.

The Zacks Consensus Estimate for IonQ’s third-quarter loss stands at 26 cents per share, while the full-year 2026 estimate projects a loss of $1.19 per share, implying year-over-year improvements of 92.74% and 34.6% respectively.

Technically, IONQ is trading slightly above both its 50-day and 200-day simple moving averages, a recovery signal after the July selloff, though the narrow gap offers limited technical cushion.

Valuation remains a significant concern, with IONQ trading at 46.51 times price-to-sales compared to just 5.03 times for the broader S&P 500, a premium of roughly 9.2 times.

While that multiple sits below IonQ’s three-year median of 67.48 times, the elevated valuation leaves the stock with little tolerance for any execution missteps going forward.

The stock currently carries a Zacks Rank of 4, designated as Sell, and with shares already up nearly 16% since the earnings release, investors may want to consider locking in gains while the stock reassesses its next move.