Alamos Gold shares fall 6.23% intraday as updated guidance highlights higher costs, capital spending, and operational underperformance concerns.

Alamos Gold dropped 6.23% intraday after announcing revised three-year guidance with lower 2026 production (570–650K oz vs. prior 630–680K oz) and higher 2026 all-in sustaining costs ($1,500–1,600/oz vs. prior $1,150–1,250/oz). The update cited operational underperformance in 2025, delays at the Lynn Lake project due to wildfires, and increased capital spending ($850–940M vs. prior $620–690M). While the company highlighted long-term growth targets (46% production increase by 2028), the near-term guidance cuts and higher costs signaled execution risks, prompting a sell-off. The bearish move reflects investor concerns over short-term operational challenges and capital intensity, despite positive long-term expansion plans.