Yancoal Australia Ltd's stock price soared 7.96% during intraday trading on Wednesday, marking a significant upward movement for the coal miner.

The sharp rise is attributed to a surge in coal prices, which gained nearly 5.1%, following news that miners in Indonesia—the world's largest coal exporter—have halted spot coal exports. This supply disruption stems from a government proposal in Indonesia to cut output, which has tightened global supply expectations and boosted prices for alternative suppliers like Australian producers.

The positive sentiment lifted the broader Australian mining sector, with other major coal miners also recording gains during the session.