Image source: © 2025 Krish Capital Pty. Ltd.

Highlights

  • Northern Star Resources shares fell 5.9% to AUD 17.30, making it the top percentage loser on the S&P/ASX 200 today.

  • Kalgoorlie Production Centre sold 832koz of gold in FY25, missing the revised guidance of 850–860koz.

  • Group FY25 gold sales totalled 1,634koz, within the updated guidance range of 1,630–1,660koz; FY26 guidance set at 1,700–1,850koz.

Shares of Northern Star Resources Ltd (ASX:NST) tumbled on Monday, falling 5.9% to AUD 17.30, making it the biggest percentage decliner on the S&P/ASX 200, which remained largely flat. Earlier in the session, the gold miner dropped as much as 8.1%, hitting its lowest level since mid-March. The broader ASX All Ordinaries Gold Index (.AXGD) also declined, shedding as much as 3.1%.

The sell-off followed the company’s latest production update, in which it disclosed that its Kalgoorlie Production Centre sold 832,000 ounces of gold in FY25, falling short of its revised guidance of 850,000 to 860,000 ounces. This shortfall weighed on investor sentiment, despite the miner meeting its overall group sales target.

Total gold sold for the financial year was 1,634,000 ounces, in line with the company’s revised group guidance range of 1,630,000 to 1,660,000 ounces. Northern Star has now set its FY26 forecast for gold sales at 1,700,000 to 1,850,000 ounces, though it flagged major planned shutdowns across all three of its production centres during the September 2025 quarter.

Despite the day’s drop, Northern Star shares remain up 19.1% year-to-date, as of the previous close.