IonQ (NYSE: IONQ) shares have fallen 39% over the past month, trading at $32.86 midday Wednesday, as pure-play quantum computing stocks endure a sharp and broad selloff.
Rigetti Computing (NASDAQ: RGTI) and D-Wave Quantum (NYSE: QBTS) have each shed 30% over the same period, while Quantum Computing (NASDAQ: QUBT) shares have declined 24%.
The selloff looks less like a company-specific story and more like a sentiment reset across speculative technology, with investors trimming exposure to high-multiple, pre-profit names.
Quantum pure-plays sit at the far end of the risk spectrum, making them especially vulnerable when AI-infrastructure and semiconductor valuations are being re-priced across the board.
IonQ carries a trailing 12-month P/E ratio of 84.26x, while Rigetti, D-Wave, and Quantum Computing have no meaningful trailing P/E ratios given their unprofitability over that period.
IonQ posted Q1 2026 revenue of $64.67 million, up 755% year over year, but its adjusted EBITDA loss guidance for the full year sits at between -$330 million and -$310 million.
D-Wave reported Q1 2026 revenue of $2.86 million, down 81% year over year due to lumpy system-sale timing, though bookings surged 2,000% year over year, signaling strong forward demand.
Rapid growth paired with deep losses and heavy stock-based compensation has made it difficult for investors who want to see a clearer path to profitability before committing capital.
The bull case has not entirely disappeared, as IonQ received final regulatory approval to complete its acquisition of SkyWater Technology (NASDAQ: SKYT), a major U.S.-based semiconductor foundry, with closing expected July 31.
IonQ frames the SkyWater combination as a vertically integrated, full-stack quantum platform with a secured domestic chip supply, which could strengthen its long-term competitive positioning.
D-Wave shares rallied earlier this month after AT&T (NYSE: T) agreed to expand use of D-Wave’s quantum computing technology across its network operations, with Rigetti and peers rising in sympathy.
AT&T stock is up 10% over the past month, a sharp contrast to the quantum names and a reminder of just how speculative the pure-play quantum sector remains relative to established telecoms.
Policy tailwinds also remain in play, as the U.S. Department of Commerce signed letters of intent in May to provide more than $2 billion in federal incentives to nine quantum-related companies in exchange for minority equity stakes.
The Defiance Quantum ETF (NASDAQ: QTUM), which spans quantum and adjacent computing names, is down only 16% over the past month, offering better insulation than any single pure-play name.
The QTUM ETF carries an expense ratio of 0.4% and provides thematic exposure to the sector without the violent single-stock volatility that has punished investors in IonQ, Rigetti, and D-Wave.
Prediction markets on Polymarket place IonQ’s odds of beating its next quarterly earnings print at just 6.5%, even as Wall Street analysts hold an average price target of $68.41 on the stock.
That wide gap between crowd sentiment and sell-side optimism is precisely where the next directional move for quantum computing stocks is likely to be decided in the weeks ahead.
Key dates to watch include the SkyWater deal close on July 31, IonQ’s Q2 2026 earnings report on August 5, and D-Wave and Rigetti reports on August 6.
The next two weeks could determine whether the current correction is a temporary pause or the beginning of a deeper and more sustained reset across the quantum computing sector.
For now, the setup rewards patience over conviction, with long-term investors potentially finding better entry points if sector-wide de-risking continues through August.
