The Quantum Foundry

The Quantum Foundry

Quantum's Inflection Point of 2026 happens this Week

Quantinuum goes IPO is the biggest moment in the history of Quantum computing as an investable trend.

Michael Spencer's avatar
Michael Spencer
Jun 01, 2026
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Quantum computing service provider Quantinuum boosts its hardware to 20  qubits - SiliconANGLE

On Thursday of this week Quantinuum, that will be ticker $QNT begins to trade as a public company. I don’t even like the trapped-ion approach to scaling qubits and Quantum computers, but this becomes immediately the best pure-play group of Quantinuum's engineers with a public company.

Quantum’s inflection point occurs in the 2029 to 2032 period, but this is the beginning of when it’s taken more seriously.

It’s been just one week since the US government started actively investing in quantum computing to bolster national security and maintain global technological superiority. Backed by the CHIPS and Science Act, the Department of Commerce announced a $2 billion strategic initiative across nine domestic quantum companies.

In 2027 begins what I call the Machine Economy era and emerging technologies like Physical AI and Quantum become more important with space-technology as well. While robotics takes a long time to mature, the Semiconductor boom on public markets looks pretty extraordinary in 2026, especially the the bottleneck around HBM memory companies like SK Hynix, Micron and Samsung.

There are some subtle and not so subtle signs that Quantum’s importance will get more pronounced as National Defense and geopolitical uncertainty becomes a defining feature of the next decade.

FoxConn
Foxconn. We can expect Taiwan to be implicated in the Quantum hardware supply-chain of the future.

For example, Foxconn said its quantum computing research is gaining international recognition, but the company expects commercialization to remain a few years away, with broader business opportunities emerging around 2030.

The Quantinuum IPO is the start of a new era for Quantum computing ramping up with hopefully a new batch of Quantum startups coming in 2027 and 2028 that are able to get more serious funding.

Enter Anderon

Basically an IBM spinout, with U.S. Government backing.

IBM’s Anderon is also a big deal, with $1 billion in planned funding to establish a new quantum foundry subsidiary for quantum-grade superconducting wafers by building on its U.S. leadership in superconducting quantum wafer fabrication technology.

Learn More

$QNT is set to begin trading on June 4th, 2026 and it really makes IONQ 0.00%↑ and all the rest of the Quantum SPACs look like meme stocks if you realize the research, logical qubit and talent behind this company. With the support of Honeywell, it’s way more than an ordinary Quantum computing startups.

The Quantum Hardware Era Begins

IBM announced it in May 2026 as a spun-off standalone company (initially a subsidiary) focused exclusively on quantum computing hardware manufacturing. It is headquartered in Albany, New York, and will operate a 300mm quantum wafer fab, offering manufacturing services to IBM and competing quantum hardware vendors.

IBM Quantum

The U.S. wants to accelerate quantum chip production and strengthen the U.S. quantum ecosystem by providing dedicated fabrication capacity (beyond IBM’s own needs). The most significant aspect of Anderon is that it is not an IBM-exclusive hardware facility. Instead, it operates on a open foundry model—very similar to how TSMC manufactures classical silicon chips for competing designers.

Notes on Quantinuum IPO

I really encourage you to read the S-1 yourself. If you are at all interested in the future of Quantum, it’s a must read:

Read the S-1 Yourself

  • Supposed to be Raising $1B by offering 21.1M shares at $45–$50, implying a fully diluted market cap of ~$12.2B at the midpoint

  • But as of last Friday, the IPO was reportedly oversubscribed by a double-digit multiple. So don’t be surprised if it’s over $100 on its first day/first week.

I will be doing a deep dive into it on my investing research Newsletter.

They are a full-stack company with likely a top three global team of Quantum researchers and engineers and Honeywell’s support. In post-IPO voting, I expect Honeywell to hold hold around 49.1% of the combined voting power. It’s definitely their baby.

Many believe that Quantinuum stands out as one of the strongest pure-play bets in quantum computing, positioned as a potential leader in the race toward fault-tolerant, commercially viable systems. I’m a little more skeptical of the trapped ion qubit approach as a whole - where trapped-ion quantum computing encodes qubits in the electronic or hyperfine energy states of charged atoms confined by electromagnetic (Paul) traps. Their tech is certainly a lot better than IonQ, who trade under IONQ 0.00%↑ and has been the best of the SPACs, in a rather lackluster Quantum lineup of public companies.

All respect to Xanadu or Infleqtion, but they are no Quantinuum. XNDU 0.00%↑

Quantinuum uses trapped-ion technology, which generally offers superior fidelity and coherence times compared to superconducting approaches. They have Helios system (launched commercially ~late 2025): 98 physical qubits, 48 logical qubits, 99.921% two-qubit gate fidelity — among the highest reported. Their tech only gets half-decent in 2029. There’s a pretty high chance that there’s a meaningful breakthrough in another qubit approach by 2030.

They were founded the same year as Anthropic, that is, Quantinuum was formed in 2021 through the merger of Honeywell Quantum Solutions (hardware-focused) and Cambridge Quantum (software-focused). While Quantinuum is majority-owned by Honeywell, it does operate with significant independence.

  • The company filed the S-1 on May 8, 2026 (preliminary prospectus dated that day).

  • Quantinuum indicative price range of $45-50 with book currently ~2x oversubscribed, which is sort of rare in normal times - these aren’t normal times.

  • At the high end of the range, the IPO implies a fully diluted valuation of roughly $12.7 billion (up from a $10 billion pre-money valuation in its September 2025 funding round). However we could see it with a market cap closer to $40 Billion in this AI boom market.

  • Expected IPO Date: June 4, 2026. That’s this coming Thursday.

Net proceeds will primarily fund general corporate purposes through Quantinuum Holdings (R&D, operations, scaling hardware/software). As you might expect.

For me this is the biggest Quantum IPO in history and that counts for something:

Quantinuum Expands Global Footprint to Singapore with the Establishment of  a New R&D Centre
The R&D Centre, together with the planned deployment of a Quantinuum Helios system in Singapore, March 11th, 2026.

Pre-Revenue IPOs for the Quantum Dream ✨

Technologies like robotics, quantum computing, space-technologies, and the end-game of Generative AI will take years to decades for us to see their full manifestation. It will take a lot of public companies, capital and years of innovation to get anywhere significant. Just like it’s taken autonomous vehicles or reusable rockets decades just to get off the ground. Some believe some aspects of recursive self-improving AI could accelerate these curves. It’s not clear how much compute exactly that would require and how seriously the impact might be. There are however AI chip design startups looking to do this - only a matter of time before Quantum hardware design goes the same route. By 2030 or 2035 we’ll have more data on the best qubit approach to seriously invest in, as for the 2020s it hasn’t been abundantly clear.

Their a fair chance that the approach Quantinuum has been taking is a dead-end. They are still functioning like a pre-revenue Quantum research lab for the most part although full-stack. Revenue is modest (e.g., ~$31M in 2025 per some reports; low double-digit millions recently). The company reports significant net losses (e.g., $192M+ annually, with heavy Q1 2026 burn).

Still, this is a real IPO, not a SPAC.

What they are able to raise from the public offering will stimulate the Quantum industry in a major way.

  • Headquarters: Broomfield, Colorado, USA

  • Core Backing: Honeywell as major shareholder; US government investment (part of $2 billion quantum initiative)

  • Positioning: Full-stack quantum computing platform (hardware + software + applications)

  • Hardware: Trapped Ion technology, representative systems H1/H2, 56 physical qubits, gate fidelity 99.95%+, industry-leading

  • Software: Quantum algorithms, middleware, chemical simulation platform, serving drug development, materials science, finance, cybersecurity

  • Software: Quantum algorithms, middleware, chemical simulation platform, serving drug development, materials science, finance, cybersecurity

  • Net Loss: Approximately $136.6 million in 2025, still in high-investment R&D phase

  • Technical Moat: Trapped Ion approach with globally leading fidelity, suited for high-precision computing

Quantum computing heavyweight arrives as merger creates Quantinuum - CNET

What the QCCD? 🧮

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