Cundill Deep Value

Cundill Deep Value

Deep Value Report — Mosaic Co. ($MOS)

Hidden Value in plain sight

FRAGMENTS's avatar
FRAGMENTS
Jun 11, 2026
∙ Paid

What MOS really is, and why the stock got hit

Mosaic still owns the mines.

The potash mines did not disappear. The phosphate rock did not disappear. The Florida system did not disappear. Brazil did not disappear. The Ma’aden stake did not disappear. The inventory, receivables, plants, terminals, warehouses, permits, land, and operating footprint are still there.

What disappeared was trust in the margin.

Farmers still need nutrients. The world still needs crop production. Potash and phosphate still matter. Mosaic is being punished because, for now, too much of the economics moved away from the company before reaching the common shareholder.

The stock recently traded around $21–22, with a market cap around $6.8 billion, enterprise value around $12.2 billion, and roughly 318 million shares outstanding. The screen also shows about $12.4 billion of trailing revenue, roughly $2.0 billion of trailing EBITDA, total debt near $5.8 billion, net debt near $5.5 billion, and book value around $37 per share.

This analysis is not built on book value.

Book value is only the clue. The real work is what we would pay today for Potash, Phosphate, Brazil, Ma’aden, working assets, and non-core optionality after charging debt, structured payables, raw-material pressure, environmental obligations, capital intensity, and execution risk.

The stock is not cheap because accounting value says so. The stock is cheap because the market does not believe that balance-sheet value will reach the common shareholder without being consumed first by input costs, capex, debt, Brazil, working capital, and environmental obligations.

The market is not disputing the existence of the assets. It is refusing to pay full value until those assets prove they can earn through the current cost environment.

Continue reading

Below, we rebuild Mosaic from the balance sheet up — not book value, not a fertilizer slogan. Potash, Phosphate, Brazil, Ma’aden, debt, environmental claims, rebuild cost, and per-share value. The free section shows why MOS is worth opening. The full analysis answers the real question: what is actually left for the common shareholder after sulfur, ammonia, capex, debt, and Brazil get paid first?

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