BHP Group shares declined around 2% on Thursday as the broader mining sector faced downward pressure. Competitor Fortescue triggered this sentiment. Fortescue warned of a drop in its cash balance. It also highlighted that its forecasts depended on ongoing talks with China Mineral Resources Group, a state-backed Chinese iron ore buyer.

The mining sub-index fell by 2%. Other major players, including Rio Tinto, also dropped by 2.9%. This market reaction underscores investor concern about iron ore producers' negotiations with Chinese buyers. One analyst noted that BHP had previously resolved a similar dispute. The event highlights the sector's sensitivity to Chinese demand and contract securities.