Nov. 24 (Bloomberg) -- Poland’s WIG20 Index gained 18.74, or 0.9 percent, to close at 2,164.88 at the close in Warsaw, trimming this week’s decline to 3.4 percent.

The following are among the most active stocks on the Warsaw Stock Exchange today. Stock symbols follow company names.

KGHM Polska Miedz SA (KGH PW), the copper producer with the biggest European mine output, advanced 0.8 percent to 126 zloty, after closing at the lowest level since Oct. 5 yesterday. Copper for three-month delivery advanced in London.

PKN Orlen SA (PKN PW), Poland’s largest refiner, added 0.7 percent to 36.9 zloty. Oil rose as a surprise drop in U.S. stockpiles and violence in Saudi Arabia countered concern that Europe’s debt crisis will threaten the economy.

--Editors: Linda Shen, Hellmuth Tromm

To contact the reporters on this story: Pawel Kozlowski in Warsaw at pkozlowski@bloomberg.net; Monika Rozlal in Warsaw at mrozlal@bloomberg.net

To contact the editor responsible for this story: Gavin Serkin at gserkin@bloomberg.net