Cameco (CCJ) shares fell 7.9 percent on Friday, October 30, 2026, the steepest decline among uranium peers as the company reported third-quarter results showing a sharp margin compression.
Gross margin contracted to 19.7 percent from 27.7 percent in the year-ago quarter. Revenue rose just 0.7 percent year-over-year, but higher production costs consumed much of the gain.
The company blamed a planned maintenance outage at its Key Lake mill for reduced production volumes and elevated costs during the period. Alongside earnings, Cameco narrowed its 2026 uranium delivery guidance to 29.5 million to 30.5 million pounds and flagged higher administrative costs and unit cost increases for the full year.
NexGen Energy (NXE) and Denison Mines (DNN) fell 4.4 percent and 6.8 percent respectively. By contrast, the SPDR energy sector fund (XLE) rose 1.9 percent, underscoring that Cameco's decline was sector-specific.
The 7.9 percent drop ranks among Cameco's worst single-day moves in a year. The stock closed at $76.91, its lowest in twelve months, down from a January 28 high of $134.09. Over the past year, CCJ has fallen 27.7 percent while the S&P 500 returned 11.3 percent. The majority of the loss—36.2 percent—occurred after May 1.
The key watch: gross margin sustainability. With management signaling higher unit costs for 2026, investors should scrutinize Q4 results to determine whether the margin pressure is temporary or structural to the current operating environment.
