Every few decades, Wall Street’s biggest pools of capital quietly move into something years before the general public notices.
They did it with the internet in the early 1990s. They did it with cloud computing in the mid-2000s.
They’re doing it right now with quantum computing.
BlackRock led a $750 million funding round into one private quantum computing company last year. That company’s valuation more than doubled in four years — from $3.15 billion to $7 billion.
Baillie Gifford is in. T. Rowe Price-linked funds are in. At least one sovereign wealth fund is in.
Google’s venture arm has positions in two different quantum companies. Microsoft’s venture arm has positions in two more. Amazon has been an IonQ backer since its early funding rounds, straight through to today.
None of this made front-page news. It didn’t need to. The market did the talking instead — quantum computing’s total market size reached $3.5 billion in 2025, up 170% from the year before.
Why This Is Happening Now
For a decade, quantum computing was a science project. Big promises, no revenue, no product.
That’s changed faster than most investors have noticed.
IonQ, the most prominent publicly traded pure-play in the sector, reported second-quarter 2026 revenue of $80.05 million — beating Wall Street’s estimate of $66.42 million — and raised its full-year guidance to a range of $280 million to $290 million. In early August, the company closed a $1.8 billion acquisition of SkyWater Technology, a real chip-fabrication asset, not a research partnership.
D-Wave Quantum signed an expanded commercial deal with AT&T that delivered a documented 240x processing speedup on a real-world logistics problem. The company closed its most recent quarter with $588.4 million in cash and $33.4 million in bookings.
This isn’t hypothetical anymore. These are companies with signed customers, real revenue, and balance sheets to match.
Wall Street has noticed the volatility that comes with it too. The sector has swung wildly through 2026 — some pure-play names down more than 30% year-to-date at points, others up double digits in a single session on deal news. This is not a sector for anyone who needs a smooth ride. It is a sector institutional money is building positions in anyway.
Three Ways to Get Exposure
We see three distinct approaches here, each with a different risk profile.
1. The company already public and already setting the pace. IonQ trades under the ticker IONQ. It carries the strongest revenue trajectory of any pure-play quantum name, backed by a real, closed acquisition and raised guidance. Wall Street’s average analyst price target has sat meaningfully above where the stock has traded in recent months — though in a sector this volatile, that gap can close or widen fast in either direction.
2. The diversified basket. The Defiance Quantum ETF, ticker QTUM, spreads exposure across quantum-linked names alongside established technology companies, which dilutes the single-stock swings that hit pure plays hard. It’s been one of the better-performing thematic ETFs of 2026, up more than 35% year-to-date through early September, with a 0.4% expense ratio.
3. The name most investors have never heard of. Infleqtion, ticker INFQ, is one of the newest quantum names to reach public markets and gets a fraction of the coverage IonQ, Rigetti, or D-Wave receive. It’s also, as it turns out, one of the companies that just caught the attention of a much bigger, much less private source of capital.
Even Washington Is Circling the Same Names
This part happened only in the past few weeks, and it’s worth knowing about.
The Department of Commerce, through its CHIPS R&D Office, finalized a round of quantum computing awards worth $100 million apiece — going to D-Wave Quantum, Rigetti Computing, Infleqtion, and Quantinuum, along with privately held PsiQuantum and Atom Computing. As a condition of the funding, the government is taking minority, non-controlling equity stakes in each company.
Rigetti’s specific agreement covers three technical projects: miniaturized readout electronics, an expanded cryostat architecture, and fabrication for high-connectivity chip designs.
Separately, IonQ has its own government relationship on the research side, having previously extended a DARPA contract to build optical atomic clocks using its ion-trap technology.
None of this is why institutional money moved into quantum computing first. BlackRock, Baillie Gifford, and the sovereign wealth funds cited earlier made their bets before this funding round existed. But it’s a second, independent signal pointing at several of the same names — and a reminder that this sector now has more than one type of deep-pocketed believer.
The Bottom Line
Quantum computing has moved from a research curiosity to a sector with real revenue, real customers, and real institutional capital behind it — and, as of this month, direct federal backing in several of the same names private investors already own.
Which of the three approaches fits depends on your own risk tolerance. This is a genuinely volatile, largely pre-profit sector, and it should be sized accordingly in any portfolio.
Risk Disclosure: This report is for informational and educational purposes only and does not constitute personalized investment advice. Quantum computing stocks are highly volatile, frequently pre-profit or pre-revenue, and carry substantial risk of loss, including total loss of principal. Stock prices, analyst targets, and fund performance figures referenced above are current as of the dates noted and will change, in some cases significantly within a single trading day. Wall Street Watchdogs is not a registered investment adviser. Do your own research and consult a licensed financial advisor before making any investment decision.
