Brazil Stock Guide — The combination of iron ore prices below US$100 per tonne, persistently steep quality discounts and a sharp increase in shipping costs between Brazil and China is putting a significant share of Brazilian production under pressure. BTG Pactual estimates that 30 million to 40 million tonnes per year of supply from higher-cost producers could be at risk of disruption if current conditions persist.
Iron ore prices are hovering between US$96 and US$98 per tonne, while Brazil–China freight rates have climbed to about US$42 per tonne. Since the escalation of the conflict in Iran, shipping costs have risen by approximately US$25 per tonne from the US$22–US$23 levels seen at the beginning of the year, mainly reflecting higher bunker fuel prices and reduced vessel availability.
Freight alone now accounts for nearly 40% of the benchmark iron ore price, rapidly eroding the netbacks received by Brazilian miners that rely on the spot shipping market and sell lower-grade products. According to BTG, Brazil’s logistical disadvantage relative to Australia has always been significant, but the recent shock has widened the gap to an extreme level.
The shift has already begun to trigger supply cuts. Usiminas recently suspended operations at its Samambaia plant in Minas Gerais, which accounts for approximately 30% to 35% of its total mining capacity, estimated at about 9 million tonnes per year. The company explicitly cited lower iron ore prices and higher ocean freight costs.
Itaminas has also begun adjusting its operations. The company announced collective leave for about 300 employees and plans to temporarily halt production in October after accumulating inventories equivalent to roughly one month of output. BTG believes these cases may not remain isolated if current market conditions persist.
The estimate of 30 million to 40 million tonnes of potentially threatened supply is significant even relative to the global seaborne market. According to the bank, that volume represents approximately 2% to 3% of the seaborne market and would exceed Simandou’s expected shipments this year.
The situation could create a paradoxical dynamic for the market. Although the current environment is negative for marginal Brazilian producers, further production disruptions would reduce available supply and could ultimately support iron ore prices. In BTG’s view, “something has to give”: either freight rates must fall substantially or iron ore prices must rise to keep this production in the market.
If shipping costs remain at current levels, the bank estimates that additional supply cuts could help push iron ore prices back to at least US$105 to US$110 per tonne. The thesis is that as higher-cost producers curtail output, the resulting physical market adjustment would begin to support international prices.
Among the listed companies covered by BTG, Usiminas appears particularly exposed, with the shutdown of Samambaia already providing concrete evidence of the pressure on mining profitability. CSN is also vulnerable because of its significant reliance on spot freight, leaving its realized netbacks and mining margins more sensitive to the persistence of current shipping rates.
Vale, by contrast, is in a considerably more comfortable position, according to the bank, benefiting from greater protection against freight volatility and from economies of scale. BTG’s chart illustrates the scale of the logistical gap: freight between Tubarão and Qingdao stands at about US$42 per tonne, while the Australian Dampier–Qingdao route is close to US$19. BTG therefore believes that the crisis beginning to affect Brazil’s marginal producers could ultimately have the opposite effect on the broader market by reducing supply and strengthening support for iron ore prices.
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