UBS Holds Neutral on Major Miners as Chinese Iron Ore Stocks Hit 163Mt
UBS maintained Neutral ratings on Rio Tinto, BHP, Vale and Fortescue and a Sell on Kumba Iron Ore as Chinese port stocks rose to 163 million tonnes. It flagged a supply overhang despite iron ore prices rebounding to $105/t and noted Rio’s $23.80 cash cost versus BHP’s 63% EBITDA margin.
1. UBS Research Ratings
UBS assigned Neutral ratings to Rio Tinto, BHP, Vale and Fortescue while placing Kumba Iron Ore on Sell. The firm highlighted spot 2026 free cash flow yields of 10% for Rio, 9% for Vale and 5% for BHP as key valuation metrics underpinning its views.
2. Chinese Port Inventory Surge
Chinese port iron ore inventories climbed 19 million tonnes year-on-year to 163 million tonnes, marking the highest level in over three years. UBS warned that this stockpile build represents a significant supply overhang that could pressure sustained price gains.
3. Cost and Margin Profiles
Rio Tinto’s Pilbara C1 cash cost stands at $23.80 per tonne, roughly $5 above BHP and Fortescue peers. BHP led the group with a 63% EBITDA margin and $58 EBITDA per tonne in H2 2025, underscoring its cost efficiency advantage.
4. Free Cash Flow Implications
Despite iron ore prices recovering to around $105 per tonne, UBS cautioned that elevated port inventories and high cash costs at certain producers could limit free cash flow generation. The firm’s ratings reflect these divergent supply-side and cost-structure dynamics.