Key Takeaways
- At Build 2026, Microsoft introduced the Majorana 2 quantum chip with ambitious plans for commercial quantum computing by 2029
- The new chip replaces aluminum with lead-based superconductors, achieving performance improvements of up to 1,000x on certain benchmarks
- Qubit count increased from 8 to 12, while qubit stability extended dramatically from less than 12 milliseconds to over 20 seconds
- Scientific community voices skepticism over Microsoft’s transparency, citing insufficient public data for verification
- MSFT shares traded at $441.31 following a 4.17% decline, with GuruFocus suggesting approximately 20% undervaluation
Microsoft has taken its quantum computing ambitions from theoretical to tangible. During the Build 2026 developer conference held on June 2, the Redmond-based tech giant revealed its Majorana 2 chip alongside an aggressive 2029 deadline for delivering commercially viable quantum computing solutions.
Shares of MSFT fell 4.17% to $441.31 following the reveal.
This second-generation chip builds upon last year’s original Majorana processor. The updated version features 12 qubits compared to its predecessor’s 8, while achieving a remarkable improvement in qubit stability—extending operational time from under 12 milliseconds to beyond 20 seconds. For quantum computing technology historically plagued by decoherence challenges, this represents substantial progress.
Microsoft’s 2029 roadmap aligns with IBM‘s timeline, which recently announced a $10 billion quantum investment and established a separate chip division with backing from the Trump administration.
Why Lead Makes the Difference
The most significant technical innovation involves replacing aluminum with lead in the superconductor design. This isn’t merely an incremental adjustment—lead atoms possess different sizes and quantum-scale behaviors. Microsoft credits AI-powered materials science platforms for solving the challenge of working with water-soluble lead without compromising the manufacturing process.
Jason Zander, Microsoft’s executive vice president leading quantum initiatives, identified this as the critical innovation. The modification delivered performance enhancements of approximately 1,000x across specific metrics. “The reason why people don’t use it to build chips is it requires an incredibly specialized process,” Zander explained. “We figured it out.”
The company’s quantum strategy centers on Majorana quasiparticles—exotic particles whose existence remained unconfirmed until Microsoft reported detecting them. This claim continues to generate debate among physicists.
Academic Scrutiny Intensifies
Skepticism persists within the scientific establishment. Researchers like Henry Legg from the University of St. Andrews have challenged Microsoft’s transparency, contending that insufficient data has been made available for independent validation. The journal Science indicated in 2024 that it was reviewing data from a 2020 Microsoft quantum paper. Detractors maintain that comparable transparency concerns exist with the latest research.
Microsoft contends that proprietary information restrictions prevent complete public disclosure, though it has shared pertinent findings privately with DARPA, which is assessing various quantum methodologies.
“We’ve done enough of the physics to really have great data,” Zander stated.
GuruFocus assigns MSFT a GF Score of 97 out of 100, with maximum 10/10 marks across profitability, growth, and valuation categories. The stock’s P/E ratio of 26.27x trades below its five-year median of 34.15x.
Insider transactions during the previous three months reveal zero purchases, with insiders selling $5.6 million worth of shares.
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