First Majestic Silver Reports Massive 50-69% Increase in Mineral Resources, Bolstering Long-Term Value
AG has more than doubled off its 52-week low of $5.185.
Summary
First Majestic Silver announced significant increases in its 2025 mineral reserve and resource estimates, with Measured & Indicated resources up 50% and Inferred resources up 69%, driven by exploration success and higher metal price assumptions.
Key Events · Financing and Capital Events · AG
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Proven & Probable Reserves Increase
Proven and Probable Mineral Reserves increased by 4% year-over-year to 184.8 million silver-equivalent ounces.
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Measured & Indicated Resources Surge
Measured & Indicated Mineral Resources jumped 50% year-over-year to 652.8 million silver-equivalent ounces.
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Inferred Resources Jump
Inferred Mineral Resources increased 69% year-over-year to 592.3 million silver-equivalent ounces.
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New Santo Niño Discovery
The Santo Niño deposit at Santa Elena added 4.1 million tonnes of Inferred Mineral Resources containing 27.4 million silver-equivalent ounces.
Analysis · AG · Energy & Transportation
This 6-K announces highly significant increases in First Majestic Silver's mineral reserve and resource estimates for 2025, with Measured & Indicated resources surging by 50% and Inferred resources by 69% year-over-year. While Proven and Probable reserves saw a solid 4% increase, the substantial growth in the resource categories, particularly the discovery of the Santo Niño deposit adding 27.4 million silver-equivalent ounces, significantly strengthens the company's long-term production potential and asset base. This expansion, driven by successful exploration and favorable metal price assumptions, provides a robust pipeline for future reserve conversion and extends the potential life-of-mine across its operations, including Jerritt Canyon. Investors should view this as a strong positive indicator for the company's future growth and intrinsic value.
How filings like this one have moved
In the 30 days to Oct 5, 2026, 42.7% of the 288 measured filings Wiseek scored 9 moved their stock by 5% or more by the next session's close. The median move was -0.53%. These are measured outcomes after filings of this importance, not a forecast for this one.
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At the time of this filing, AG was trading at $21.03 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $10.9B. The 52-week trading range was $5.19 to $32.04. This filing was assessed with positive market sentiment and an importance score of 9 out of 10.