Andrew Forrest’s Fortescue has become the latest Australian miner targeted by China’s push for lower iron ore prices, putting future export revenue at risk.

Sage Capital and Ten Cap are among an army of funds betting against Andrew Forrest’s mining empire, while short interest in Rio Tinto and BHP is at the highest level in years.

Andrew Forrest’s misfiring magnetite division and hardball negotiating tactics from the centralised buyer have taken the shine off record production.