REGIS RESOURCES LTD stock plummeted 10.23% in intraday trading on Friday, reflecting a sharp negative reaction from investors.

The decline followed the company's release of its FY27 guidance, which included higher all-in sustaining costs of A$2990-$3390 per ounce and a production forecast of 360-400 thousand ounces. The market likely viewed these figures as disappointing, particularly if costs are elevated relative to expectations or if production targets are perceived as conservative.

Additionally, the company guided for an exploration spend of A$80-$90 million for the period. The combination of these guidance metrics appears to have triggered the significant sell-off during the trading session.