** Australia-listed shares of Capstone Copper CSC.AX fall 8.4% to A$13.25, their lowest level since February 18

** Jefferies says co's reported Q4 adjusted EPS of $0.10 missed its estimate of $0.16, while also coming in below the FactSet consensus of $0.12

** Brokerage adds co's adjusted Q4 EBITDA of $308 million was also below its $354 million forecast, primarily due to a combination of higher-than-expected production costs and depreciation

** "CS has underperformed YTD in large part due to the weaker than expected 2026 guide, and the expectation that production and costs only materially improve in 2027" - Jefferies

** However, brokerage maintains "buy" rating

** YTD shares down 12.63%

($1 = 1.4178 Australian dollars)