Arqit Quantum (ARQQ) just released half year results to March 31, 2026, reporting sales of US$0.623 million and a widened net loss of US$33.03 million, drawing fresh attention to the stock.

The recent half year update appears to have coincided with stronger short term interest in the stock, with a 7 day share price return of 31.11% and a 30 day share price return of 20.37%. However, the year to date share price return is still down 28.73% and the 1 year total shareholder return is down 30.35%, pointing to improving momentum after a difficult longer period.

If Arqit Quantum has you looking at the wider quantum and cybersecurity space, it could be worth scanning other listed peers through our curated set of 28 quantum computing stocks

With the stock bouncing in the short term but longer term returns still under pressure, and sales of US$0.623 million set against a half year net loss of US$33.03 million, are you looking at an undervalued opportunity or a market that has already priced in future growth?

Most Popular Narrative: 70.9% Undervalued

Arqit Quantum's most followed narrative assigns a fair value of $60 per share, well above the last close at $17.49. This frames a wide valuation gap for investors to assess.

Regulatory and government pressure to move critical infrastructure and financial systems to post quantum security is shifting customer behavior from awareness to mandated action, supporting sustained growth in license revenue and professional services.

Want to see what supports that higher fair value? The narrative leans on rapid revenue expansion, margin rebuild and a future earnings multiple usually reserved for stand out software stocks.

Result: Fair Value of $60 (UNDERVALUED)

However, there is still the risk that modest revenue against sizable losses, together with rising competition in quantum safe security, could undermine the high growth assumptions behind that story.

Next Steps

Torn between the risks highlighted and the potential rewards, investors are watching closely. Act while the data is fresh and weigh both sides through 1 key reward and 6 important warning signs

Looking for more investment ideas?

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.