Most of Listed Quantum's $2.6 Billion Second-Quarter Loss Never Left the Building

by Nikolai Petrov · August 14, 2026

Technology Reporter, Frontier Tech Wire

Second-quarter reporting for the listed quantum computing sector is essentially finished, and the headline arithmetic looks grotesque. Add the GAAP net losses of five US-listed pure-plays and the total is about $2.61 billion: IonQ at $1,867.7 million, Quantinuum at $597 million, Rigetti Computing at $52.6 million, D-Wave Quantum at $48.0 million and Xanadu Quantum Technologies at $42.1 million. Combined June-quarter revenue was about $98 million. That ratio has done duty all week as shorthand for a sector burning money unsustainably. It is a bad shorthand, and the reason sits in the same releases.

Total only the items those companies explicitly identify as non-cash and you get roughly $1.83 billion of the $2.61 billion, about 70%. IonQ supplies most of it: a $1,649.1 million warrant fair-value charge plus $131.5 million of stock compensation, per its Form 10-Q. Rigetti's loss carries a $29.6 million mark on derivative warrant liabilities; Xanadu itemises a $12.5 million fair-value change on financial instruments and $4.7 million of stock compensation. The tally is conservative: it excludes D-Wave's and Rigetti's stock compensation and all of Quantinuum's $597 million, which the company attributes principally to non-cash charges it does not size.

The largest entry in the sector's loss column is not research spending but an accounting mark at IonQ, which trades on the NYSE under IONQ. Second-quarter revenue was $80.1 million, up 287% year over year, against a GAAP net loss of $1,867.7 million, or $5.08 per share on 367.7 million weighted-average shares. The warrant remeasurement was a loss in the quarter, not a gain, and it sits below the operating line: strip it out and the GAAP operating loss was $337.2 million, which still contains the $131.5 million of stock compensation. Adjusted EBITDA loss, the company's non-GAAP measure, was $120.3 million. Cash used in operating activities was $254.8 million — a six-month figure, not a quarterly one.

The warrants have a traceable origin. On 10 October 2025 IonQ priced a $2.0 billion equity offering to an entity managed by Heights Capital Management: 16,500,000 shares and 5,005,400 pre-funded warrants at $93, plus warrants covering 43,010,800 shares at $155. Such warrants are carried as liabilities and remarked each period, so a rising stock enlarges both the liability and the reported loss. The sign flips both ways. In the first quarter of 2026 IonQ reported GAAP net income of positive $805.4 million attributable to IonQ, driven by a $1,057.6 million gain on the same warrants; GAAP EPS was positive $2.19 while non-GAAP adjusted EPS was negative $0.34. The six-month net loss of $1,062.4 million is simply the net of the two marks.

The risk the warrants carry is dilution, not cash. IonQ reported 381,044,481 shares of common stock outstanding at 30 June 2026, up from 362,592,722 at 31 December 2025, per the 10-Q balance sheet; warrants covering 43,010,800 shares are a potential future claim equal to roughly 11% of that count. IonQ closed its acquisition of SkyWater Technology on 31 July 2026, paying $15.00 in cash plus 0.4883 IonQ shares per SkyWater share — stock consideration landing in the third-quarter count. Cash and investments were about $3.0 billion at quarter-end; the company's second-quarter slides put the pro forma figure after the purchase at about $2.0 billion, as reported by Investing.com.

Rigetti Computing, on Nasdaq under RGTI, shows the same pattern at a fraction of the scale. Second-quarter revenue was $5.14 million, up 185%. GAAP net loss was $52.6 million, of which $29.6 million was the non-cash warrant mark; GAAP operating loss was $28.1 million and non-GAAP net loss was $16.0 million. The line that matters most: Rigetti used $32.0 million in operating activities across the entire first half — a half-year figure — against $541.3 million of cash, equivalents and available-for-sale investments at 30 June and no debt. Shares outstanding went from 331,282,895 at 31 December 2025 to 333,676,881 at 30 June 2026.

D-Wave is the counterexample that proves the point. It transferred from the NYSE to The Nasdaq Stock Market and began trading under the unchanged ticker QBTS on 27 July 2026 — recent enough that plenty of still-circulating material, including D-Wave's own earlier releases, carries an "NYSE: QBTS" dateline. Revenue was $3.1 million, roughly flat year over year, GAAP net loss $48.0 million and adjusted EBITDA loss $37.1 million. Those converge because the warrant liability is gone: D-Wave redeemed its remaining public warrants in November 2025 and attributes the $119.3 million improvement in net loss primarily to a $142.0 million decrease in non-cash warrant remeasurement charges.

D-Wave also shows where the cash went. Cash and marketable securities were $546.2 million at 30 June 2026, down $273.1 million from a year earlier — but the company says more than 90% of that decline was acquisition cash, not operating burn. It bought Quantum Circuits on 20 January 2026 for $550 million, $300 million in stock and $250 million in cash. The balance itself was built by selling equity, including a $400 million at-the-market offering completed in mid-2025. First-half bookings were $35.5 million, up 1,120%.

Xanadu reports in US dollars and trades as XNDU on both Nasdaq and the Toronto Stock Exchange. Second-quarter revenue was $1.5 million against a GAAP net loss of $42.1 million, with $4.7 million of stock compensation and a $12.5 million fair-value loss on financial instruments, chiefly warrant and earn-out share liabilities. It ended the quarter with $312.8 million of cash, having raised $67.2 million during the quarter under a synthetic at-the-market facility with Yorkville Advisors established in May 2026 for up to $300 million. That facility is ongoing dilution, not a one-off.

Quantinuum trades on the Nasdaq Global Market under QNT. The three dates around its listing are routinely conflated: it priced an upsized IPO of 28,000,000 Class A shares at $60.00 on 3 June 2026, trading began 4 June, and the offering closed 5 June for $1.68 billion gross. Second-quarter revenue was $8 million, up 279% on the company's calculation; the GAAP net loss was $597 million, attributed principally to non-cash charges — stock compensation recognised on completion of the pre-IPO reorganisation and remeasurement of liability-classified warrants. Non-GAAP adjusted EBITDA loss was $68 million and adjusted net loss per share $0.28. Cash and short-term investments were $2.1 billion; full-year revenue guidance is $28 million to $32 million.

Two more names frustrate any clean league table. Infleqtion trades on the NYSE under INFQ — per its own investor-relations FAQ and the release marking its February listing — not on Nasdaq, as several roundups have it. It reported second-quarter revenue of $12.6 million, up 116%, a GAAP operating loss of $30.6 million against a non-GAAP operating loss of $17.0 million, $582 million of cash and securities with no debt, and raised full-year guidance to about $43 million. Its release flags a $27.4 million temporary working-capital benefit from payroll taxes not yet remitted on option exercises, reversing in the third quarter. IQM Quantum Computers listed ADSs on Nasdaq as IQMX on 2 July 2026, with ordinary shares admitted to Nasdaq Helsinki on 3 July, and reports in euros on a half-year cycle.

The conclusions are narrow but firm. Adjusted EBITDA and cash used in operating activities compare across these companies; GAAP net loss does not. Warrant liabilities get remarked at 30 September, and a strong quarter for the shares will mechanically enlarge reported losses again. Dilution, not insolvency, is the live risk: IonQ's warrant overhang and SkyWater stock consideration, Xanadu's active at-the-market facility, and Rigetti's non-binding May 2026 letter of intent with the US Department of Commerce for up to $100 million over three years — contemplating, per the company, an equity stake for the department — are all claims on future share count. The balance sheets are large for companies this early but finite, and each firm is funding operations from stock sales rather than earnings.