Fortescue shipped 49.7 million tonnes of iron ore in the last quarter, setting a new benchmark and underpinning a strong start to the financial year.
The Perth-based miner is the world's fourth-largest supplier of iron ore.
The result for the first three months of 2025/26 was four per cent higher than the same period last year, marking a record first quarter.
But it was also 10 per cent down on the final quarter of 2024/25.
Operations chief executive Dino Otranto described the result as a "strong start to the year".
Its full-year guidance was unchanged, with Fortescue still expected to supply 195-205Mt, including 10-12Mt from its Iron Bridge operation in Western Australia.
Fortescue also improved its cash position to $US4.6 billion ($A7.1 billion), mainly due to prepayments and drawd