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Mosaic (MOS) Starts Uberaba Rare Earths Study, Is The Stock Fully Priced?

Simply Wall St·09/08/2026 09:25:48
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Mosaic (MOS) moved back into focus after Rainbow Rare Earths kicked off a pre feasibility study at the Uberaba project in Brazil, targeting rare earth extraction from Mosaic’s phosphogypsum waste stream.

Against that backdrop, Mosaic’s share price has been moving steadily higher in recent weeks, with a 30-day share price return of 12.10% and a 90-day share price return of 30.42%, even though the 1-year total shareholder return has declined 17.37%. This signals short term momentum building as the market reacts to the Uberaba rare earths study alongside recent debt redemptions and a reaffirmed dividend.

Scan for other materials and rare earth plays with similar price momentum and balance sheet strength using our hand picked 31 best rare earth metal stocks as a starting universe.

Mosaic’s recent jump and the rare earths optionality now baked into expectations put you at a fork in the road. Is there still clear upside on offer, or has most of the rerating already happened?

Most Popular Narrative: 3.6% Undervalued

Mosaic’s most followed narrative pegs fair value at $26.82, only slightly above the recent $25.85 close, so the rare earths excitement lands on top of an already tight valuation gap built around fertilizer fundamentals.

Global fertilizer supply and demand dynamics remain favorable, with tight markets in both phosphate and potash due to limited new capacity, continued Chinese export restrictions, and record or near record global shipments. This structural supply constraint, combined with robust farmer demand, driven by rising food needs and government support in key regions like India and Brazil, positions Mosaic to capture higher prices, lifting revenue and margins.

Read the complete narrative.

Want to see what underpins that fair value call on Mosaic? The narrative leans heavily on a specific margin rebuild path and a restrained revenue curve that together shape the earnings bridge the model relies on.

Result: Fair Value of $26.82 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

Still, the whole Mosaic narrative wobbles if fertilizer oversupply keeps margins under pressure or if Brazil’s credit issues drag harder on Fertilizantes demand.

Find out about the key risks to this Mosaic narrative.

Next Steps

Mixed signals around Mosaic, with both risks and rewards in play, make this a moment to move quickly, pull up the data, and test whether the market is overreacting or underestimating the story by weighing the 3 key rewards and 3 important warning signs.

Hunt For Your Next Mosaic Sized Idea

Do not stop with Mosaic. Apply the same level of scrutiny to a fresh watchlist so you are not relying on a single story to carry your returns.

  • Target resilient compounding potential by reviewing companies in the 49 high quality undervalued stocks that pair quality fundamentals with pricing that still looks reasonable.
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  • Lock in peace of mind by filtering through the 83 resilient stocks with low risk scores to focus on businesses with sturdier balance sheets and fewer red flags.

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.