The Runway Math: What Quantum's Q2 Balance Sheets Say About Who Can Fund the Wait
Quantum computing's second-quarter reporting season produced two sets of numbers that barely speak to each other. The income statements describe companies losing tens of millions of dollars a quarter against revenue measured in single-digit millions. The balance sheets describe companies with more cash than most profitable mid-caps. Reconciling the two is the central exercise for anyone trying to judge how long the sector's experiment can run before the market has to fund it again.
IonQ sits at the top of the pile. The company reported $3.0 billion in cash, equivalents and investments as of June 30, falling to roughly $2.0 billion on a pro-forma basis once the SkyWater Technology acquisition closed on July 31, according to its second-quarter release. Against that, Data Center Dynamics reported an adjusted EBITDA loss of $120.3 million for the quarter — $95.6 million excluding SkyWater-related spending — while IonQ's 10-Q, filed August 10, disclosed $254.8 million of net cash used in operating activities across the first half.
Rigetti Computing carries the sector's tidiest balance sheet relative to its burn. Its August 6 release put cash and investments at $541.3 million as of June 30 with no debt, against a quarterly operating loss of $28.1 million and revenue of $5.1 million. The GAAP net loss of $52.6 million looks far worse, but the company also disclosed a non-GAAP net loss of $16.0 million — the gap reflecting non-cash items rather than money leaving the building.
D-Wave Quantum is spending faster on a similar cash pile. The company reported $546.2 million in cash and marketable investment securities as of June 30, alongside $55.0 million of quarterly operating expenses, an adjusted EBITDA loss of $37.1 million and revenue of $3.1 million, per its August 6 release. Bookings of $2.1 million in the quarter followed a first-half surge to $35.5 million, meaning the revenue line and the demand signal are currently telling different stories.
Quantum Computing Inc. reported the widest gap between resources and outlays. Its August 10 release showed $189.2 million in cash and equivalents and $1.3 billion including investments, against $21.8 million of quarterly operating expenses and a net loss of $11.8 million. In Europe, IQM Quantum Computers ended its first half with €309.4 million in cash and an order backlog of €102.1 million as of August 3, according to Data Center Dynamics.
The crude arithmetic — dividing disclosed cash by the most recent quarter's operating or adjusted EBITDA loss — implies roughly four years of cushion at IonQ on a post-SkyWater basis, close to five at Rigetti, under four at D-Wave and far longer at Quantum Computing Inc. Those are Frontier Tech Wire calculations on reported figures, not company guidance, and they should be read as a rough ordering rather than a forecast.
The caveats matter more than the quotients. Adjusted EBITDA excludes capital spending, and this is a sector building fabs and cryogenic plant. It excludes acquisitions, which have been substantial: IonQ's SkyWater deal carried a $15.00-per-share cash component, per The Quantum Insider, and Quantum Computing Inc. paid $73.1 million in cash and stock for NHanced Semiconductors with up to $72 million more in performance payments.
Then there is the other funding channel: shares. IonQ's count rose to 381.0 million at June 30 from 362.6 million at the end of 2025, per its 10-Q, while Quantum Computing Inc. reported 226.3 million basic shares outstanding. In a sector where roadmaps run to 2030 and beyond, the scarce resource is not conviction or even cash — it is the number of quarters each company can buy before returning to the market.
