Shares of Yancoal Australia Ltd (YAL.AU) plummeted 7.54% during Tuesday's intraday trading, marking its largest single-day percentage loss since August 20. The sharp decline comes on the heels of the company's disappointing third-quarter production report released after market hours on Monday.

According to the report, Yancoal's quarterly run-of-mine (ROM) coal production slid to 15.8 million tonnes, down from 17.5 million tonnes in the same period last year. Adding to investor concerns, the average realized coal price fell to A$140 (US$90.97) per tonne, a significant drop from A$170 a year ago. These factors have contributed to the negative sentiment surrounding the stock, leading to the substantial sell-off.

The market's reaction to Yancoal's performance has been notably strong, with trading volume reaching about 3.3 million shares, 1.4 times the 30-day average. This heightened activity underscores investor unease about the company's near-term prospects. Year-to-date, Yancoal's stock has now declined 18%, including today's movement, reflecting ongoing challenges in the coal market and broader economic uncertainties.