Is Perpetua Resources (TSX:PPTA) Antimony Pilot Plant the Key to Its Long-Term Defense Strategy?

• Earlier in December 2025, Perpetua Resources announced a partnership with Idaho National Laboratory and the U.S. Army to develop a modular pilot plant that can produce military-grade antimony trisulfide from ores at its Stibnite Gold Project in Idaho.
• The initiative positions Stibnite as a potential cornerstone of a domestic antimony supply chain for defense applications, aligning mineral development with U.S. national security objectives and regional job creation.
• We’ll now examine how this defense-focused antimony pilot plant collaboration could influence Perpetua Resources’ broader investment narrative and long-term positioning.

The end of cancer? These 29 emerging AI stocks are developing tech that will allow early identification of life changing diseases like cancer and Alzheimer's.

What Is Perpetua Resources' Investment Narrative?

To own Perpetua Resources, you have to believe the permitting and build-out of Stibnite can ultimately justify a high, pre-revenue valuation and years of reported losses. The new antimony pilot plant collaboration with Idaho National Laboratory and the U.S. Army reinforces the defense angle and could sharpen the story around critical minerals, but the immediate share price reaction suggests the stock was already pricing in a lot of optimism. In the near term, the key catalysts still look familiar: progress on permitting, clarity on long-term funding after the recent US$78.2 million raise, and any concrete steps toward offtake or federal backing for antimony. The biggest risks remain execution and financing, now with added complexity as Perpetua layers defense-spec processing ambitions on top of an already complex project.

However, one key risk here is not about geology at all, but about funding. Insights from our recent valuation report point to the potential overvaluation of Perpetua Resources shares in the market.

Exploring Other Perspectives

Seven Simply Wall St Community fair value views span roughly US$4.29 to US$42.89 per share, underlining how far apart private investors can be. Set against Stibnite’s long lead times and ongoing losses, that spread invites you to weigh differing expectations for permitting progress, funding access and defense-related upside.

Explore 7 other fair value estimates on Perpetua Resources - why the stock might be worth less than half the current price!

Build Your Own Perpetua Resources Narrative

Disagree with this assessment? Create your own narrative in under 3 minutes - extraordinary investment returns rarely come from following the herd.

• A great starting point for your Perpetua Resources research is our analysis highlighting 3 important warning signs that could impact your investment decision.
• Our free Perpetua Resources research report provides a comprehensive fundamental analysis summarized in a single visual - the Snowflake - making it easy to evaluate Perpetua Resources' overall financial health at a glance.

Searching For A Fresh Perspective?

Early movers are already taking notice. See the stocks they're targeting before they've flown the coop:

• These 11 companies survived and thrived after COVID and have the right ingredients to survive Trump's tariffs. Discover why before your portfolio feels the trade war pinch.
• Uncover the next big thing with financially sound penny stocks that balance risk and reward.
• The best AI stocks today may lie beyond giants like Nvidia and Microsoft. Find the next big opportunity with these 26 smaller AI-focused companies with strong growth potential through early-stage innovation in machine learning, automation, and data intelligence that could fund your retirement.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com