Northern Star Resources Ltd (NST.AU) saw its stock price plummet by 5.13% in Tuesday's trading session, as investors reacted to the company's revised production guidance and potential tariff exposures. The gold miner's shares came under pressure following a series of announcements that raised concerns about its future performance and costs.

The company revised its FY25 production and cost guidance to 1,630-1,660Koz at A$2,100-2,200/Oz, which may have disappointed investors expecting more optimistic projections. This adjustment in outlook suggests potential challenges in meeting previous expectations, possibly due to operational issues or changing market conditions. Additionally, Northern Star reported quarterly gold sales of 385Koz, but the market's reaction indicates that this figure might not have met analysts' forecasts.

Adding to the negative sentiment, Northern Star Resources announced that it continues to assess the current and evolving tariff exposures announced by the US government. The uncertainty surrounding these potential tariffs and their impact on the company's operations has likely contributed to investor unease. Furthermore, the company revealed an acceleration of its FY25 growth capital and exploration guidance due to increased activity, which could imply higher costs in the near term. While this may lead to long-term benefits, the market appears to be focusing on the short-term financial implications, contributing to the stock's significant decline.